Siemens SIMATIC ET 200AL System Manual page 59

Configuration control (option handling)
7.3 Creating the control data record
Feedback data record
The feedback data record exists only when configuration control is configured and always
refers to the maximum configuration limits without interface module, i.e., 34 slots. Partial
reading of the feedback data record is possible.
Table 7- 3 Feedback data record
Byte Element
0 Block length
1 Block ID
2 Version
3
4 Slot 1 status
5 Reserved
6 Status slot 2
7 Reserved
: :
70 Status Slot 34
71 Reserved
* Not possible if the slot is marked as not available.
Note
The data in the feedback data record is always mapped for all modules. In a Shared Device
configuration, it is therefore irrelevant which IO controller the respective modules are
assigned to.
As long as no control data record was sent, a one-to-one module assignment is assumed for
the compilation of data record 197 (station master → station option).
58
Code Explanation
66 Header
197
2
0
0/1 Status = 1:
0
Module from station master is inserted in the station option
•
0/1
Slot is marked as not available in the control data record
•
0
Status = 0:
:
Module pulled
•
0/1
Incorrect module inserted in the station option*
•
0
Distributed I/O system
System Manual, 08/2019, A5E31861578-AG