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

Parameter data record

A.1

Parameter assignment and structure of the parameter data record

You have the option of reassigning module parameters with the user program while the CPU
is in RUN. The parameters are transferred to the module using data record 128, for example
with the WRREC instruction.
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 section
Parameter validation errors (Page 167) or in the online help of STEP 7 (TIA Portal). A library
of PLC data types (LPD) for STEP 7 (TIA Portal) and SIMATIC S7-1200 / S7-1500 is
available for download on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109482396).
Structure of data record 128
The following tables show you the structure of data record 128 for TM Pulse 2x24V per
operating mode. The values in byte 0 to byte 3 are fixed and must not be changed.
In two-channel mode you use byte 0 to byte 107. In one-channel operation (parallel
connection), use byte 0 to byte 55.
Table A- 1 Parameter data record 128 in the "Pulse output" mode
Bit →
7
Byte
channel
0/1
↓
0...3
0 Major Version = 0
1
2
3
4...55
Technology Module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 05/2019, A5E35061186-AB
6 5
Length of parameter data per channel = 52
4 3
Header
Minor Version = 1
Reserved
2
Channel 0
2 1
A
0
155