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

A.2

Parameter assignment and structure of the parameter data record

Parameter assignment in the user program
The module can be re-configured 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).
Note
Following a firmware update, you need to re-configure the I/O module before you can use
the new functions.
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 the
parameters set in STEP 7 are valid again after a restart.
Note
Changing parameters in RUN
A parameter data record that has content different from the startup parameter assignment
results in a brief exit from clocked measuring mode and renewed synchronization with the
fieldbus cycle. The slowest channel provides the "internal" measuring cycle.
STATUS output parameter
The module ignores errors that occur during the transfer of parameters with the "WRREC"
instruction and continues operation with the previous parameter assignment. The STATUS
output parameter contains a corresponding error code.
The description of the "WRREC" instruction and the error codes is available in the STEP 7
online help.
Analog input module AI 2xU/I 2-/4-wire HS (6ES7134-6HB00-0DA1)
Manual, 09/2018, A5E03576060-AF
A.2 Parameter assignment and structure of the parameter data record
Parameter data record
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