B.1 Parameter Assignment And Structure Of The Parameter Data Record - Siemens SIMATIC S7-1500 Manual

Parameter data record
B.1 Parameter assignment and structure of the parameter data record
You have the option to change the parameter assignment of the module with the user
program while the CPU is in RUN. The parameters are transferred to the module using the
using data record 128, for example with the instruction WRREC.
If errors occur during the transfer or validation of parameters with the WRREC instruction,
the module continues operation with the previous parameter assignment. A corresponding
error code is then written to the STATUS output parameter. If no errors occur, the STATUS
output parameter contains the length of the actually transferred data.
The description of the WRREC instruction and the error codes is available in the section
Parameter validation error (Page 61) or in the online help of STEP 7 (TIA Portal).
Structure of data record 128
The following tables show you the structure of data record 128 for TM PTO 4. The values in
byte 0 to byte 3 are fixed and may not be changed. The channels are assigned in ascending
order.
Note
The impulse output will be stopped for transfer of data record 128. For this reason, only
transfer the data record when the drive is at a standstill.
Note
If you are using less than four channels, data record 128 is shortened accordingly.
When using the technology module on PROFIBUS DP, you can use a maximum of three
channels.
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Technology Module TM PTO 4 (6ES7553-1AA00-0AB0)
Manual, 12/2016, A5E38896703-AA
B