Siemens SIMATIC S5 CP 523 Manual page 215

Serial i/o module
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CP 523
Segment 3
Output error
message
END
EWA 4NEB 811 6044-02a
1
No
Z-DB available?
Calculate Z-DB length
No
ZANF ok?
Q-DB length >=
No
QANF + QLAE
2
Using the "SEND" and "RECEIVE" Function Blocks
Check the "RECEIVE" FB parameters
Yes
Yes
Yes
8-25

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