Parameter Data Record - Siemens SIMATIC ET 200SP Manual

Parameter data record

The TM Pulse 2x24V parameter data record is modified and stored for you by the TIA portal
when you perform a Device configuration, successful configuration block compilation, and
download a new configuration block to the system hardware.
You may also directly edit the module parameters with the CPU in RUN mode. The WRREC
instruction is used to transfer parameters to the module using data record 128.
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 data actually transferred.
The description of the WRREC instruction and the error codes is available in the STEP 7
online help (TIA Portal).
Structure of data record 128
The following table shows you the structure of data record 128 for the TM Pulse 2x24V. The
values in byte 0 to byte 3 are fixed and may not be changed. Default values are indicated in
bold font.
● A total of 108 bytes (4 header bytes + 2(52 channel bytes) is required for the 2 channel
configuration (parallel connection disabled).
● A total of 56 byes (4 header bytes + 52 channel bytes) is required for the 1 channel
configuration (parallel connection enabled).
● Bytes 4 to 55 are the channel 0 parameters
● Bytes 56 to 107 are the channel 1 parameters.
● Channel 1 parameters use the same data structure as channel 0. Add a 52 byte offset to
the channel 0 byte numbers, to determine the channel 1 byte numbers.
Technology module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 09/2015, A5E35061186-AA
A
138