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Siemens SITRANS P. Operating Instructions (2019) - page 4

Parameter assignment

9.2 Parameter assignment over device with display

The following options are available to correct zero-point errors:

Device without display

Device with display

Remote operation

Press the

button and hold for

"Zero point adjustment" parame-

Device > Zero point adjustment

3 seconds.

ter

For special applications (e.g. level measurement for a closed vessel), you have the option of

shifting the zero point to a desired pressure value using the "Zero point adjustment" parameter.

You proceed differently depending on the device version.

9.2.6.1

Adjusting zero point (gauge pressure)

Requirement

The pressure measurement is stable.

Procedure

1. Vent the pressure connection of the device.

2. Navigate to the parameter view.

Navigating in the views (Page 76)

3. Select the "Zero point adjustment" parameter [07].

4. Press the

button.

The value "0" appears on the display and the "EDIT" symbol flashes.

5. Set the zero point to 0 or to the desired value.

6. Confirm the value by pressing the

button.

7. Change to the measurement view with the button.

Note

Depending on the damping setting, a settling time elapses until the pressure measurement 0

appears in the measurement view.

● For this reason, vent the pressure connection of the device up to the end of the operation.

Result

● The device displays the pressure measurement 0 in the set unit.

● The effective measuring range is reduced by the amount of the upstream pressure.

Example: With an upstream pressure of 100 mbar, the effective measuring range of a 1-bar

pressure transmitter is reduced to a point between 0 and 0.9 bar.

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9.2.6.2

Adjusting the zero point (differential pressure)

Requirement

The pressure measurement is stable.

Procedure

1. Make sure there is identical pressure in the two process connections.

2. Navigate to the parameter view.

Navigating in the views (Page 76)

3. In the parameter view, select the "Zero point adjustment" parameter [07].

4. Press the

button.

5. Set the zero point to 0 or to the desired value.

6. Confirm the value by pressing the

button.

7. Change to the measurement view with the button.

Note

Depending on the damping setting, a settling time elapses until the pressure measurement 0

is displayed.

● Make sure there is identical pressure in the two process connections until the end of the

operation.

Result

● The device displays pressure measurement 0 in the set unit.

● The effective measuring range is reduced by the amount of the upstream pressure.

Example: At a pre-load pressure of 25 mbar, the upper measuring range limit of a 250 mbar

pressure transmitter is reduced to 225 mbar.

9.2.6.3

Adjusting zero point (absolute pressure)

Requirement

You have created a reference pressure that is within the measurement limits.

Procedure

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the "Zero point adjustment" parameter [07].

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9.2 Parameter assignment over device with display

3. Press the

button.

The value "0" appears on the display and the "EDIT" symbol flashes.

4. Enter the known reference pressure using the

or

buttons.

5. Confirm the value by pressing the

button.

6. Change to the measurement view with the button.

Result

The device displays pressure measurement 0 in the set unit.

Depending on the set damping, the settling time is extended until the pressure measurement

0 is displayed.

Note

For devices for absolute pressure, the lower range value is at vacuum (0 bar a).

The zero point adjustment for devices for absolute pressure that do not measure absolute

pressure (0 bar a) leads to incorrect settings.

9.2.7

Apply lower range value [08]/Apply upper range value [09]

9.2.7.1

Apply lower range value parameter [08]

Sets the lower range value to the current reference pressure.

Setting range:

Within the measuring limits

Factory setting:

See nameplate (depending on measuring cell)

9.2.7.2

Apply upper range value parameter [09]

Sets the upper range value to the current reference pressure.

Setting range:

Within the measuring limits

Factory setting:

See nameplate (depending on measuring cell)

9.2.7.3

Apply lower range value/upper range value (with pressure present)

Introduction

The lower range value (4 mA) corresponds to 0% of the measuring range. The upper range

value (20 mA) corresponds to 100% of the measuring range.

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9.2 Parameter assignment over device with display

With pressure present, you have the following options for assigning the desired pressure

measurements to the lower range value and the upper range value:

Device without display

Device with display

Remote operation

Apply lower range value

Hold down the

"Apply lower range val-

"Device > Apply values"

button

for 3 seconds.

ue" parameter [08]

menu

Apply upper range value

Hold down the

"Apply upper range val-

"Device > Apply values"

button

for 3 seconds.

ue" parameter [09]

menu

The minimum permissible measuring span of the measuring cell must not be fallen below. You

can find the minimum permissible measuring span of your measuring cell in the section

Technical data (Page 199)

Example: Measuring cell 0 to 16 bar

1. The measuring range is from 0 to 16 bar.

S >EDU@

, >P$@

2. You set the lower range value from 0 bar to 1 bar.

In order for the measuring span to stay constant, the upper range value is automatically

shifted from 16 bar to 17 bar.

S >EDU@

, >P$@

3. You set the upper range value from 17 bar to 15 bar.

S >EDU@

, >P$@

The measuring span is 14 bar.

Requirement

● A pressure is applied, e.g. the device is already mounted.

● The pressure is within the measuring limits.

Procedure

1. Navigate into the parameter view.

Navigating in the views (Page 76)

2. Select the "Apply lower range value" parameter [08].

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9.2 Parameter assignment over device with display

3. Press the

button.

The existing pressure is displayed.

4. Use the

button to confirm.

The wizard starts.

The wizard ends with the "COMPL" message.

5. Navigate to the "Apply upper range value" parameter [09].

The existing pressure is displayed.

6. Press the

button.

The wizard starts.

The wizard ends with the "COMPL" message.

Note

The wizard ends with the "FAILD" message in the following cases:

● The pressure exceeds or falls below the measuring limits.

● The measuring span is below the minimum permissible span.

9.2.8

Select fault current [10]

Selects whether the lower or upper fault current is output when a fault occurs (e.g. hardware/

firmware error, sensor break).

Setting range:

UPPER

Upper fault current

LOWER

Lower fault current

Factory setting:

LOWER , or as specified in order

Devices with functional safety

When a safety-related error is detected in the device in "Functional Safety enabled" device

mode, the current output signal corresponds to the lower fault current ≤ 3.55 mA.

9.2.9

Lower fault current [11]

Adjusts the magnitude of the lower fault current ②.

Setting range:

Between 3.55 mA and lower saturation limit ③

Factory setting:

3.55 mA, or as specified in order

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Parameter assignment

9.2 Parameter assignment over device with display

3.55 mA

3.8 mA

4 mA

20 mA

20.5 mA

22.8 mA

① Normal operation

② Lower fault current (factory setting)

③ Lower saturation limit (factory setting)

④ Upper saturation limit (factory setting)

⑤ Upper fault current (factory setting)

9.2.10

Upper fault current [12]

Adjusts the magnitude of the upper fault current ⑤.

Setting range:

Between upper saturation limit ④ und 22.8 mA

Factory setting:

22.8 mA, or as specified in order

3.55 mA

3.8 mA

4 mA

20 mA

20.5 mA

22.8 mA

① Normal operation

② Lower fault current (factory setting)

③ Lower saturation limit (factory setting)

④ Upper saturation limit (factory setting)

⑤ Upper fault current (factory setting)

9.2.11

Lower saturation limit [13]

Sets the lower threshold for the lower saturation limit③.

The loop current cannot drop below the set threshold.

Setting range:

Between lower fault current② and 4 mA

Factory setting:

3.8 mA, or as specified in order

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Parameter assignment

9.2 Parameter assignment over device with display

3.55 mA

3.8 mA

4 mA

20 mA

20.5 mA

22.8 mA

① Normal operation

② Lower fault current (factory setting)

③ Lower saturation limit (factory setting)

④ Upper saturation limit (factory setting)

⑤ Upper fault current (factory setting)

9.2.12

Upper saturation limit [14]

Sets the threshold for the upper saturation limit④.

Setting range:

Between 20 mA and the upper fault current

Factory setting:

20.5 mA, or as specified in order

3.55 mA

3.8 mA

4 mA

20 mA

20.5 mA

22.8 mA

① Normal operation

② Lower fault current (factory setting)

③ Lower saturation limit (factory setting)

④ Upper saturation limit (factory setting)

⑤ Upper fault current (factory setting)

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9.2 Parameter assignment over device with display

WARNING

Undetected failure in devices with functional safety

Note the following:

● For the maximum current output signal to be output, set the measuring range within the

maximum permissible measuring span. You can find the maximum permissible measuring

span of your measuring cell in the section Technical data (Page 199).

● Note that a saturation limit > 21.5 mA increases the risk of undetected failures. (Page 162)

● When you configure your process control system, the analog input must distinguish

between the measured value at saturation (current is ≤ 21.5 mA) and high fault current

(current is ≥ 22.0 mA).

9.2.13

SV selection [15]

Sets a measured value as a secondary variable (SV).

Setting range:

TEMP

Sensor temperature

ETEMP

Electronics temperature

LEVEL

Level

VOL

Volume

VFLOW

Volume flow

USER

Custom

MFLOW

Mass flow

Factory setting:

As specified in order

9.2.14

Units [16]

Introduction

Depending on the application of the device that you have selected using the "Application"

parameter, you have the option of selecting a unit:

● Level

● Volume

● Volume flow

● Mass flow

The selected unit is displayed in the measurement view.

Use the remote operation to set the associated unit for the "Customized characteristic curve"

application.

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9.2 Parameter assignment over device with display

See also

Application [05] (Page 110)

9.2.14.1

Level units [16]

Selects the unit for the "Level" measurement.

This parameter is only visible when you have selected the "Level" characteristic curve using the

"Application" parameter.

Setting range:

m

cm

mm

in

ft

Factory setting:

m

9.2.14.2

Volume units [16]

Selects the unit for the "Volume" measurement.

This parameter is only visible when you have selected a volume characteristic curve using the

"Application" parameter.

Certain units are displayed differently on the display and over remote operation. (Page 107)

Setting range:

Display (header line)

Display (enumeration)

Remote operation

Gal

Ga

gal

Gal [UK]

IGa

gal (UK)

l

l

l

hl

hl

hl

m3

m3

m³

in3

in3

in³

Ft3

Ft3

ft³

bu

bu

bu

Yd3

Yd3

yd³

bbl

bbl

bbl

bbl [US]

Ubb

bbl (US)

Nl

Nl

Nl

Nm3

Nm3

Nm³

SCF

SCF

SCF

Factory setting:

m³

9.2.14.3

Volume flow units [16]

Selects the unit for the "Volume flow" measurement.

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9.2 Parameter assignment over device with display

This parameter is only visible when you have selected a volume flow characteristic curve using

the "Application" parameter.

Certain units are displayed differently on the display and over remote operation. (Page 107)

Setting range:

Display (header line)

Display (enumeration)

Remote operation

m3/sec

m3/S

m³/s

m3/min

m3/m

m³/min

m3/h

m3/h

m³/h

m3/d

m3/d

m³/d

l/Sec

l/S

l/s

l/min

l/m

l/min

l/h

l/h

l/h

Ml/d

Ml/d

Ml/d

FT3/Sec

Ft3/S

ft³/s

Ft3/min

Ft3/m

ft³/min

Ft3/h

Ft3/h

ft³/h

Ft3/d

Ft3/d

ft³/d

SCF/min

SCF/m

SCF/min

SCF/h

SCF/h

SCF/h

Nl/h

Nl/h

Nl/h

Nm3/h

Nm3/h

Nm³/h

Gal[UK]/Sec

IGa/S

gal (UK)/s

Gal[UK]/min

IGa/m

gal (UK)/min

Gal [UK]/h

IGal/h

gal (UK)/h

Gal[UK]/d

IGa/d

gal (UK)/d

Gal/Sec

Ga/S

gal/s

Gal/min

Ga/m

gal/min

Gal/h

Ga/h

gal/h

Gal/d

Ga/d

gal/d

Mgal/d

MGI/d

Mgal/d

bbl/d

bbl/d

bbl/d

bbl/h

bbl/h

bbl/h

bbl/min

bbl/m

bbl/min

bbl/Sec

bbl/S

bbl/s

Factory setting:

m³/s

9.2.14.4

Mass flow units [16]

Selects the unit for the mass flow measurement.

This parameter is only visible when you have selected a mass flow characteristic curve using

the "Application" parameter.

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9.2 Parameter assignment over device with display

Certain units are displayed differently on the display and over remote operation. (Page 107)

Setting range:

Display (header line)

Display (enumeration)

Remote operation

KG/Sec

KG/S

kg/s

Gr/Sec

G/S

g/s

Gr/min

G/m

g/min

Gr/h

G/h

g/h

KG/min

KG/m

kg/min

KG/h

KG/h

kg/h

KG/d

KG/d

kg/d

t/min

t/m

t/min

t/h

t/h

t/h

t/d

t/d

t/d

lb/Sec

lb/S

lb/s

lb/min

lb/m

lb/min

lb/h

lb/h

lb/h

lb/d

lb/d

lb/d

ton/min

sto/m

ton/min

ton/h

sto/h

ton/h

ton/d

sto/d

ton/d

ton(UK)/h

Lto/h

ton (UK)/h

ton(UK)/d

Lto/d

ton (UK)/d

Factory setting:

kg/s

9.2.15

Temperature units [17]

Selects the temperature unit for the "Sensor temperature" and "Electronics temperature"

measurements that are displayed in the measurement view.

Setting range:

K

°C

°F

°R

Factory setting:

°C

9.2.16

Lower scaling point [18]

Sets the lower range value for the scaling.

Depending on the application of the device, you set the lower scaling point as follows:

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Parameter assignment

9.2 Parameter assignment over device with display

Level

Setting range:

Freely selectable numeric value

Factory setting:

0 m

Volume

Setting range:

Freely selectable numeric value

Factory setting:

0 m³

Volume flow

Setting range:

Freely selectable numeric value

Factory setting:

0 m³/s

Setting range:

Freely selectable numeric value

Factory setting:

0

Mass flow

Setting range:

Freely selectable numeric value

Factory setting:

0 kg/s

Setting range:

Freely selectable numeric value

Factory setting:

0

Custom units

Setting range:

Freely selectable numeric value

Factory setting:

USER DEFINED (custom), or as specified in order

Note

Bidirectional volume and mass flow measurement

Select a lower scaling value that is symmetrical to the upper scaling value. Example:

● Upper scaling value: 1000 m³/s

● Lower scaling value: -1000 m³/s

9.2.16.1

Set lower scaling point

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the "Lower scaling point" parameter [18].

3. Use the

button to confirm.

4. Set the lower scaling point.

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9.2.17

Upper scaling point [19]

Sets the upper range value for the scaling.

Depending on the application of the device, you set the upper scaling point as follows:

Level

Setting range:

Freely selectable numeric value

Factory setting:

100 m

Volume

Setting range:

Freely selectable numeric value

Factory setting:

1000 m³

Volume flow

Setting range:

Freely selectable numeric value

Factory setting:

1000 m³/s

Mass flow

Setting range:

Freely selectable numeric value

Factory setting:

1000 kg/s

Custom units

Setting range:

Freely selectable numeric value

Factory setting:

USER DEFINED (custom), or as specified in order

9.2.17.1

Set upper scaling point

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the "Upper scaling point" parameter [19].

3. Use the

button to confirm.

4. Set the upper scaling point.

9.2.18

Low flow cut-off [20]

Sets the flow value for the low flow cut-off. The flow value is suppressed up to certain

percentage of the output value.

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9.2 Parameter assignment over device with display

The parameter is visible when you have selected the "Hold at 0, square root" (VSOFF or

MSOFF) characteristic curve using the "Application" parameter.

Setting range:

0% - 100%

Factory setting:

10%

See also

Volume and mass flow measurements (Page 115)

9.2.19

Vessel dimension A [21]

Sets the height of the vessel bottom for the following vessel shapes:

● Conical bottom vessel (CONIC)

● Parabolic bottom vessel (PARAB)

● Half sphere bottom vessel (HALF)

● Flat sloped bottom vessel (FLAT)

For a lying parabolic ends vessel (PARAE) the set value corresponds to the height of the end

piece.

You can find a figure with the different vessel shapes under "Volume measurement

(Page 118)".

Setting range:

0 to 100%

Factory setting:

0%

For the calculated volume to correspond to the actual vessel volume, set the parameters

Vessel dimension A and Vessel dimension L as follows:

● Vessel dimension L + 2 • Vessel dimension A = 100%.

Example: Vessel dimension L is 80% and vessel dimension A is 10%.

WARNING

Overfilling the vessel

To avoid overfilling the vessel, set a limit alarm: The limit must be below the maximum

measuring range ① and have a sufficient minimum distance to the top edge of the vessel.

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9.2 Parameter assignment over device with display

See also

Configuring limit monitoring (Page 154)

9.2.20

Vessel dimension L [22]

Sets the length of the bottom vessel for a lying parabolic ends vessel (PARAE).

You can find a figure with the different vessel shapes under "Volume measurement

(Page 118)".

Setting range:

0 to 100%

Factory setting:

0%

For the calculated volume to correspond to the actual vessel volume, set the parameters

Vessel dimension A and Vessel dimension L as follows:

● Vessel dimension L + 2 • Vessel dimension A = 100%.

Example: Vessel dimension L is 80% and vessel dimension A is 10%.

9.2.21

Button lock [23]

Enables the button lock. You can continue to operate the device using remote operation.

Setting range:

ON

Button lock enabled

OFF

Button lock disabled

Factory setting:

OFF

9.2.21.1

Enabling button lock

Procedure

1. Navigate into the parameter view.

Navigating in the views (Page 76)

2. In the parameter view, select the "Button lock" parameter.

3. Press the

button.

The "EDIT" symbol flashes.

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9.2 Parameter assignment over device with display

4. Select ON with the

or

button.

5. Use the

button to confirm.

Result

● The display automatically returns to the measurement view.

● The display automatically changes between the measured values every 12 seconds.

● The symbol for button lock "LL" and the measured value ID are displayed alternately.

Note

For a device without display, you activate the button lock using remote operation.

9.2.21.2

Disabling button lock

Procedure

To disable the button lock, press and hold the

button for 5 seconds.

Result

● The symbol for Button lock "LL" is hidden.

● You can operate the device using the buttons.

Note

For a device without display, you deactivate the button lock using remote operation.

9.2.22

Change user PIN [24]

Used to change the User PIN.

Setting range:

1 to 65535

Factory setting:

2457

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Requirement

The "User PIN (Page 139)" parameter is enabled.

Procedure

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the parameter "Change user PIN".

3. Press the

button.

4. Enter the old user PIN.

5. Enter the new user PIN with a value between 1 and 65535.

Changing parameter values (Page 81)

6. Use the

button to confirm.

7. Repeat the new user PIN and use the button to confirm.

Result

● If both user PINs match, the "COMPL" message appears.

The user PIN has been successfully changed.

● If the two user PINs do not match, the "FAILD" message appears.

Then repeat the described procedure.

9.2.23

Recovery ID [25]

Shows the recovery ID.

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If you have forgotten your user PIN, you will need a recovery ID. The "Recovery ID" parameter

shows a number that is necessary for restoring the user PIN.

Figure 9-2

Example

9.2.23.1

Display Recovery ID

Requirements

The "User PIN" parameter is enabled.

Procedure

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the "Recovery ID" parameter.

This Recovery ID is displayed.

Result

Please contact the Technical Support with the displayed recovery ID and the serial number of

your device.

You can find the serial number of the device on the nameplate or via remote operation.

Siemens Technical Support will give you a PUK (PIN Unlock Key) that you use to reset the user

PIN to the factory setting 2457.

9.2.24

PIN recovery [26]

Used to reset the user PIN to the factory setting.

The user PIN is factory set to 2457 in the device.

9.2.24.1

Recovering the user PIN

Requirement

● You have received the PUK from Technical Support. (Page 136)

● The "User PIN (Page 139)" parameter is enabled.

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Procedure

1. In the parameter view, select the "PIN recovery" parameter.

2. Press the

button.

The cursor and the "EDIT" symbol flash.

3. Enter the digits of the PUK:

- Use the or button to change.

- Use the button to confirm.

- Use the button to delete.

The complete PUK is shown on the top line of the display.

4. When the PUK is complete, use the button to confirm.

Result

● If you have entered the correct PUK, the message "NEW PIN - 2457" appears.

The user PIN has been reset to the factory setting 2457.

● If the PUK was not correctly entered, the message "FAILD" appears.

Then repeat the described procedure.

9.2.25

User PIN [27]

Used to enable or disable the user PIN.

Setting range:

ON

Enable user PIN

OFF

Disable user PIN

Factory setting:

User PIN disabled

When the user PIN is enabled, the measured values and parameters are read-only.

● To change the parameters and use the device functions, the user PIN must be input.

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The user PIN 2457 is factory preset in the device.

Note

Write protection is automatically enabled 10 minutes after the last button operation.

● Enter the user PIN.

9.2.25.1

Enable user PIN

Requirement

The User PIN is disabled.

Procedure

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the parameter "User PIN".

3. Use the

button to confirm.

The message "USER PIN ON" (User PIN enabled) appears for 2 seconds.

Result

The User PIN is activated after about 10 minutes or after a device restart.

9.2.25.2

Disable user PIN

Requirement

The user PIN is enabled.

Procedure

1. Navigate to the parameter view.

Navigating in the views (Page 76)

2. Select the parameter "User PIN".

3. Use the

button to confirm.

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4. Select YES with the

or

button.

5. Use the

button to confirm.

The message "USER PIN OFF" appears for 2 seconds.

Result

The User PIN is disabled.

9.2.26

Active device mode [28]

Shows the mode in which the device is operated.

The parameter is only visible for devices with Functional Safety.

Setting range:

STD

Functional Safety is disabled

FUNCT

Validation of the safety-related parameters and/or the fail-

safe behavior is performed

SAFE

Functional Safety is enabled

ERROR

Safety critical device error

O/S

Out of service mode, non-safe mode

Factory setting:

STD

You can find additional information on the device modes under Device mode (Page 163).

9.2.27

Functional Safety [29]

Enables Functional Safety.

The parameter is only visible for devices with Functional Safety.

You can find additional information about functional safety under Functional Safety (Page 159).

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9.2.28

Display test [30]

Used to check that numbers, texts and symbols appear correctly on the display.

● To start the display test, press the

button and select "START".

When the display test is complete, the message "COMPL" appears.

● To cancel the display test, press the

button.

9.2.29

Loop test [31]

Sets a constant loop current for test purposes.

You have the option of selecting preset values or a user-defined value.

Setting range:

3.55 mA

4 mA

12 mA

20 mA

22.8 mA

USER

User defined

Factory setting:

12 mA

9.2.29.1

Loop test with preset loop current value

1. Navigate into the parameter view.

Navigating in the views (Page 76)

2. Select the parameter "Loop test".

3. Use the

button to confirm.

The loop test starts:

- The "EDIT" symbol flashes.

- The "Function check" symbol is displayed.

- The "Co" symbol (constant current mode) is displayed.

4. Change the preset value with the

or

button.

5. Use the

button to confirm.

The loop test starts.

6. End the loop test with the

button.

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9.2 Parameter assignment over device with display

9.2.29.2

Loop test with user defined loop current value

1. Navigate into the parameter view.

Navigating in the views (Page 76)

2. In the parameter view, select the "Loop test" parameter.

3. Use the

button to confirm.

The loop test starts:

- The "EDIT" symbol flashes.

- The "Function check" symbol is displayed.

- The "Co" symbol (constant current mode) is displayed.

4. Change to "USER" with the or button.

5. Use the

button to confirm.

6. Set a value between 3.6 mA and 22.8 mA using the buttons or

7. Use the

button to confirm.

The loop test starts.

8. End the loop test with the

button.

9.2.30

Start view [32]

Selects the value that is displayed as the first measured value in the measurement view.

For the selection to take effect, change from the parameter view to the measurement view or

restart the device.

Setting range:

Edit view

Measurement view

PRESS

Pressure (P1)

STEMP

Sensor temperature (P2)

ETEMP

Electronics temperature (P3)

LEVEL

Level (P4)

VOL

Volume (P5)

VFLOW

Volume flow (P6)

MFLOW

Mass flow (P7)

USER

Customized characteristic curve (P8)

%

Percent of range (P9)

LOOPC

Loop current (PA)

CVOLT

Terminal voltage (PB)

Factory setting:

PRESS

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9.2 Parameter assignment over device with display

Note

To have the process value for "Level", "Volume", "Mass flow", "Volume flow" or "Customized

characteristic curve" shown as the "Start view", first set the associated characteristic curve

using the "Application" (Page 110) parameter.

9.2.31

Pressure reference [33]

Used to adapt the display of the pressure unit to your application.

Setting range:

NONE

Not specified

GAUGE

Gauge pressure

ABS

Absolute pressure

Factory setting:

NONE

See also

Pressure units [01] (Page 106)

9.2.32

Identify the device [34]

Enables or disables the device identification via HART.

When device identification is enabled, the device signals its identification data via HART.

With device identification enabled, the device responds to a request with the HART command

"Find device".

Setting range:

ON

Device identification enabled

OFF

Device identification disabled

Factory setting:

OFF

9.2.33

Reset [35]

Used to reset the following settings:

Setting range:

Restore ordered configuration

CUST

Reset to sensor calibration

SENSR

Reset DAC trim to the factory setting

DAC

Factory reset

FACT

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9.3 Parameter assignment over remote operation

The following settings are reset to the factory setting among other things:

● Sensor calibration

● DAC trim

● The defaults that you have configured in your order.

These defaults can then deviate from the ordered configuration. To restore the ordered

configuration, use the "Restore ordered configuration (Page 144)" parameter.

9.2.34

Overload behavior [36]

Defines the reaction of the device when the measuring range of the sensor is exceeded (at

overpressure or underpressure).

If the parameter is set to "Warning", the current output follows the pressure value up to the

configured saturation limits. If the parameter is set to "Alarm", the lower fault current

(≤ 3.55 mA) is output when the sensor is overloaded.

The parameter is only visible for devices with functional safety and is only effective if the device

is in the "Functional Safety enabled" device mode.

Setting range:

WARN

Warning

ALARM

Alarm

Factory setting:

ALARM or as specified in order

The selected parameter setting influences the safety characteristics (Page 162).

9.3

Parameter assignment over remote operation

9.3.1

Introduction

This section describes the most important parameters and functions that are available

additionally over remote operation:

● "Quick Start" wizard

● Identification (TAG)

● Simulation

● Customized characteristic curve

● Sensor calibration

● Digital-to-analog converter trim (DAC trim)

● Diagnostics functions

- Limit monitoring and event counter (not available on SITRANS P320)

- Trend log (not available on SITRANS P320)

- Operating hours counter

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9.3 Parameter assignment over remote operation

9.3.2

Quick start

You use the "Quick start" wizard to configure your device in five steps for the required

application:

● Step 1: Identification

● Step 2: Application

● Step 3: Scaling

Note that you set the displayed pressure unit with the "Pressure units" (Page 107)

parameter and not with the wizard.

Set the unit of the selected application (e.g. volume, mass flow) also via the parameter

group "Settings > Current output > Scaling > Unit".

● Step 4: Fault current

● Step 5: Summary

The summary provides an overview of the "old" and "new" parameters.

To store the parameters in SIMATIC PDM and transfer them to the device, click the "Apply"

button.

9.3.3

Identification

Define the data that you need to identify your device under the "Identification" parameter group.

A distinction is made between data you can set yourself and values that are preset in the

factory.

The default values are write-protected and cannot be changed. The corresponding allocation

is set out in the following example:

Parameter

Adjustable

Preset

Factory setting

Tag

X

-

Long tag (TAG)

X

-

Description

X

-

Message

X

-

Installation date

X

-

Device

Manufacturer

-

X

Siemens

Product name

-

X

SITRANS P420

Article number

-

X

e.g. 7MF0440-1GL01-5AF2-Z

Order option 1/ Order option 2

-

X

e.g. A01+C11+C12+C14+C20+E00+H01+Y01+Y15+Y21

Serial number

-

X

In accordance with the measuring cell selection/device manufac-

ture

Final assembly number

X

-

Hardware version

-

X

In accordance with the measuring cell selection/device manufac-

ture

Firmware version

-

X

In accordance with the measuring cell selection/device manufac-

ture

EDD version

-

X

SITRANS P320/P420 with 4 to 20 mA/HART

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Parameter assignment

9.3 Parameter assignment over remote operation

Parameter

Adjustable

Preset

Factory setting

Sensor serial number

-

X

In accordance with the measuring cell selection/device manufac-

ture

Sensor type

-

X

In accordance with the measuring cell selection/device manufac-

ture

Maximum measuring span

-

X

In accordance with the measuring cell selection/device manufac-

ture

9.3.4

Simulation

You can use the device to simulate the following via remote operation (e.g. field communicator,

SIMATIC PDM):

● Input and output values

- Constant pressure values

- Ramp function

● Diagnostics

9.3.4.1

Simulate constant pressure values

Procedure

To simulate a constant pressure value via remote operation (e.g. SIMATIC PDM), follow these

steps:

1. For the "Simulation mode" parameter, set the "Enabled" option to simulate a constant

pressure value.

2. Select the pressure value ("Process value") to be simulated from the drop-down list under

the "Simulation selection" parameter.

3. For the "Simulation value" parameter, set the desired constant pressure value for the

simulation.

4. Set status to be simulated for the "PV status" parameter.

5. Click "Transfer" to start the simulation.

6. For the "Simulation mode" parameter, set the "Disabled" option to stop the simulation.

Result

The measured value is replaced by a constant simulation value. The simulation influences the

output signal. 　

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9.3 Parameter assignment over remote operation

The diagnostic status of the simulation selected for each diagnostic is displayed in additional

tabs in the dialog box. The simulated diagnostics is indicated by a check mark in the check box.

End diagnostics simulation

You close the simulation in the "Diagnostics simulation" tab:

● To disable a specific diagnostic action, click "Off" (under the "Action" field).

● To end the diagnostics simulation, click on the "Disable" button.

WARNING

When diagnostics simulation is enabled, diagnostic events of the real process are neither

recorded nor evaluated.

With activated diagnostics simulation, only the simulated diagnostics are displayed on the

device display.

Stop diagnostics simulation immediately after use:

● Click "Disable" in the "Diagnostics simulation" tab before you close the "Diagnostics"

dialog.

● Alternatively, you can restart the device.

9.3.5

Customized characteristic curve

9.3.5.1

Introduction

For special applications, a customized characteristic curve is available.

This application is used, for example, for volume measurement in vessels with unusual shapes.

You define the relationship between inlet pressure and outlet current according to your user-

specific requirements.

You have up to 32 breakpoints available for this, which you enter using the engineering system

and display graphically.

Example

For measurement with the customized characteristic curve, you set the following values, for

example:

Damping value:

2.0 s

Lower range value:

0 bar

Upper range value:

10 bar

Application:

Custom (CUSTM)

Unit:

Cans

Lower scaling point:

0 cans

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9.3 Parameter assignment over remote operation

See also

Application [05] (Page 110)

9.3.6

Sensor calibration

You use the sensor calibration to set the characteristic curve of the device at two trim points.

The results are then correct measured values at the sensor trim points.

The sensor trim points can be selected as any points within the nominal range.

Devices that are not turned down prior to delivery are trimmed at 0 bar and the high limit of the

nominal range.

Devices that are turned down prior to delivery are trimmed at the low and high limits of the set

measuring range.

Examples

● For a particular device that is not turned down (e.g. 63 bar), the typical measured value is

50 bar. To attain the highest possible accuracy for this value, set the upper sensor trim at

50 bar.

● A 63-bar pressure transmitter is turned down to 4 to 7 bar. You can attain the highest

possible accuracy by selecting 4 bar for the low trim point and 7 bar for the high trim point.

● A 250-mbar absolute pressure transmitter shows 25 mbar at 20 mbar. A reference pressure

of 20 mbar is available. To correct the zero point, perform a sensor trim at the lower trim point

with 20 mbar.

Note

Use a test device whose accuracy is at least three times as high as the accuracy of the

pressure transmitter.

Sensor calibration at the low calibration point

1. Use remote control (e.g. SIMATIC PDM) to select the menu command "Device > Sensor

calibration".

2. Apply the pressure for the low calibration point at the device.

3. Apply the pressure value that you have created and assign the pressure value to the device.

The device applies the set value.

The device carries out an offset correction of the characteristic curve.

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Parameter assignment

9.3 Parameter assignment over remote operation

Sensor calibration at the high calibration point

1. Use remote control (e.g. SIMATIC PDM) to select the menu command "Device > Sensor

calibration".

2. Apply the pressure for the high calibration point at the device.

The high calibration point needs to be greater than the low calibration point.

3. Apply the pressure value that you have created and assign the pressure value to the device.

The device applies the set value.

The device carries out an offset correction of the characteristic curve.

The low calibration point is not affected by this.

Result

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9.3.7

Digital-to-analog converter trim (DAC trim)

Introduction

The current that is output by the device can be trimmed independently of the measuring circuit.

This function is designed for compensating inaccuracies in the processing chain following the

device.

SITRANS P320/P420 with 4 to 20 mA/HART

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Parameter assignment

9.3 Parameter assignment over remote operation

Procedure

●

Trim at 4 mA:

Use the menu command "DAC trim" to instruct the device to put out 4 mA. You read the

measured value at an ammeter and enter this value. The device uses this value for offset

correction of the current.

●

Trim at 20 mA:

Use the menu command "DAC trim" to instruct the device to put out 20 mA. You read the

measured value at an ammeter and enter this value. The device uses this value for gradient

correction of the current. The value for 4 mA is not affected by this.

Note

If a multimeter is used, it must always be sufficiently accurate.

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SITRANS P320/P420 with 4 to 20 mA/HART

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Parameter assignment

9.3 Parameter assignment over remote operation

Result

Process value alarms and warnings are acknowledged and deleted.

The event counter is reset.

Hysteresis

The hysteresis works as follows:

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Limits with hysteresis

If you enter a non-zero value in the "Hysteresis" text box, the hysteresis is disabled.

Upper limit with hysteresis (A)

An overrun event is counted when the process value rises above the upper limit ①.

The next overrun event is counted when the process value falls below the lower limit minus the

entered hysteresis② and then rises above the upper limit③.

Two events are counted in the displayed time period within 'A'.

SITRANS P320/P420 with 4 to 20 mA/HART

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