Technical specifications
A.12 Technology modules
Parameter data record
Parameter assignment in the user program
You can configure the device in runtime.
Changing parameters in runtime
The module parameters are included in data record 128. You can transmit the modifiable
parameters to the module with the WRREC instruction.
When you reset (power cycle) the CPU, the CPU overwrites the parameters that were sent
to the module by the WRREC instruction during the parameterization process.
Instruction for parameter assignment
The following instruction is provided for assigning parameters to the I/O module in the user
program:
Instruction
SFB 53 WRREC
Error message
The following return value is reported in the event of an error:
Error code
80B1
80E0
80E1
1494
Application
Transfer of the alterable parameters to the module.
Meaning
Error in data length
H
Error in header information
H
Parameter error
H
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK