Configuration control (option handling)
10.3 Transferring control data record in the startup program of the CPU
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
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Error messages
In case of error, the instruction WRREC returns the following error messages via the
STATUS block parameter:
Table 10- 9 Error messages
Invalid length; the length information in data record 196 is not correct.
H
Configuration control parameters not assigned.
80E2
H
Data record was transferred in the wrong OB context. The data record must be trans-
ferred in the startup program.
80B8
H
Parameter error
A parameter error is caused by:
• Incorrect block ID in the header (not equal to 196)
• Invalid version identifier in the header
• A reserved bit was set
• A station master slot was assigned an invalid slot in the station option
• Multiple slots in the station master are assigned to the same slot in the station
option
• For shared device on submodule level: Violation of defined restrictions
Selection of the station option in the user program
In order for the CPU to know which station option you want to operate, you must set up a
possibility to select between the various control data records in the user program. You can
implement the selection, for example, via an Int tag which references an array element.
Note that the tag used to select the control data record must be stored in the retentive
memory area. If the tag is not retentive it will be initialized during the startup of the CPU and
thus be unavailable for selection of the station option.
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