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Parameter Assignment And Structure Of The Parameter Data Record - Siemens Simatic ET 200SP Manual

Analog input module ai 2xu st.
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Parameter data record
A.2 Parameter assignment and structure of the parameter data record
A.2

Parameter assignment and structure of the parameter data record

Parameter assignment in the user program
You can reassign the module parameters in RUN. For example, the voltage or current values
of selected channels can be changed in RUN without having an effect on the other channels.
Changing parameters in RUN
The "WRREC" instruction is used to transfer the parameters to the module using data
record 128. The parameters set in STEP 7 are not changed in the CPU, which means that
the parameters set in STEP 7 will be valid again after a restart.
Output parameter STATUS
If errors occur when transferring parameters with the "WRREC" instruction, the module
continues operation with the previous parameter assignment. The STATUS output
parameter contains a corresponding error code.
You will find a description of the "WRREC" instruction and the error codes in the STEP 7
online help.
Structure of data record 128
Note
Channel 0 includes the diagnostics enable for the entire module.
Image A-1
28
Structure of data record 128
Analog input module AI 2xU ST (6ES7134-6FB00-0BA1)
Manual, 12/2015, A5E36104728-AA

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