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Siemens SIMATIC S5 CP 521 Manual page 170

Printer/ascll communications module
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CP 521
Final response from the CP 521
Table 7-30. Final Coordination Information
Byte
Value
0
5X
H
1
00
H
2
00
H
3
Irrelevant
4
00
- 64
H
H
I
5
rrelevant
6
Irrelevant
7
Irrelevant
Byte 1:
The coordination bit is reset
Byte 2:
Data valid
Byte 4:
Number of messages in the receive mailbox of the CP 521
GWA 4NEB 812 6030-02b
Meaning
Coordination information
Coordination bit reset
Data valid
Number of messages in receive mailbox
ASCII Mode
7-47

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