Siemens SIMATIC S7-1500 Manual page 53

Output parameter STATUS
If errors occur during the transfer of parameters with the WRREC instruction, the module
continues operation with the previous parameter assignment. However, a corresponding
error code is written to the STATUS output parameter.
The description of the WRREC instruction and the error codes is available in the STEP 7
online help.
Operation of the module downstream from a PROFIBUS DP interface module
If the module is operated downstream from a IM PROFIBUS DP interface module, the
parameter data records 0 and 1 cannot be read back. You get the diagnostics data records 0
and 1 for the read back parameter data records 0 and 1. You can find more information in
the Interrupts section of the PROFIBUS DP interface module product manual on the Internet
(http://support.automation.siemens.com/WW/view/en/78324181).
Assignment of data record and channel
For the configuration as a 1 x 4-channel module, the parameters are located in data records
0 to 3 and are assigned as follows:
● Data record 0 for channel 0
● Data record 1 for channel 1
● Data record 2 for channel 2
● Data record 3 for channel 3
For configuration 1 x 4-channel, the module has 4 submodules with one channel each. The
parameters for the channel are available in data record 0 and are assigned as follows:
● Data record 0 for channel 0 (submodule 1)
● Data record 0 for channel 1 (submodule 2)
● Data record 0 for channel 2 (submodule 3)
● Data record 0 for channel 3 (submodule 4)
Address the respective submodule for data record transfer.
Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0)
Manual, 09/2016, A5E32366209-AC
B.1 Parameter assignment and structure of the parameter data records
Parameter data records
53