Endress+Hauser Liquistation CSF39, Operating Instructions Manual

Page: 106 / 188

Operation Liquistation CSF39
106 Hauser
3. Specify the behavior in "Hold" status. (Configuration options of Source of data ,
Measured value and Hold behavior ) →  102
Please note that if you select Hold behavior = Freeze , the system not only flags the status
but also actually "freezes" the measured value.
More information is provided in:
Operating Instructions "HART Communication", BA00486C
10.5.5 PROFIBUS DP and PROFINET
Device variables (device → PROFIBUS/PROFINET)
Here you can specify which process values should be mapped to the PROFIBUS function
blocks and are thereby available for transmission via PROFIBUS communication.
You can define a maximum of 16 device variables (AI Blocks).
1. Define the data source.
 You can choose from sensor inputs, current inputs and mathematical functions.
2. Choose the measured value to be transmitted.
3. Define how the device should behave in the hold state. (Configuration options of
Source of data , Measured value and Hold behavior ) →  102
Please note that if you select Hold behavior = Freeze , the system not only flags the status
but also actually "freezes" the measured value.
In addition , you can define 8 binary variables (DI Blocks):
1. Define the data source.
2. Select the limit switch or relay whose status is to be transmitted.
PROFIBUS/PROFINET variables (PROFIBUS/PROFINET → device)
A maximum of 4 analog (AO) and 8 digital (DO) PROFIBUS variables are available as
measured values in the controller, limit switch or current output menus.
Example: Using an AO or DO value as the set point for the controller
Menu / Setup / Additional functions / Controller 1
1. In the specified menu, define PROFIBUS as the data source.
2. Select the desired analog output (AO) or digital output (DO) as the measured value.
Further information on "PROFIBUS" can be found in the Guideline for Communication
via PROFIBUS, SD01188C
Further information on "PROFINET" can be found in the Guideline for Communication
via PROFINET, SD02490C
10.5.6 Modbus RS485 and Modbus TCP
Specify which process values should be output via Modbus RS485 Communication or via
Modbus TCP.
In the case of Modbus RS485, you can switch between the RTU and the ASCII protocol.
You can define a maximum of 16 device variables.
1. Define the data source.
 You can choose from sensor inputs and controllers.
2. Select the measured value to be output.