Address Space; Parameter Data Record - Siemens S7-1200 System Manual
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
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SM 1278 4xIO-Link Master
15.3 Parameters/address space
15.3.3
Address space
The maximum size of the input and output addresses of the SM 4xIO-Link Master is 32 bytes
in each case. You assign address spaces using the S7-PCT port configuration tool.
15.3.4
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
Application
SFB 53 WRREC
Transfer of the alterable parameters to the module.
Error message
The following return value is reported in the event of an error:
Error code
Meaning
80B1
Error in data length
H
80E0
Error in header information
H
80E1
Parameter error
H
822
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
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