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Siemens SIMATIC S5 CP 523 Manual page 160

Serial i/o module
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CP 523
Table 7-29.
09
H
0B
H
0D
H
0F
H
15
H
17
H
19
H
1B
H
1D
H
00
H
EWA 4NEB 811 6044-02a
Return Info and Error Flags in the Coordination Byte 'Send' (CBS) in
"3964(R)" Mode (Continued)
Error flags for A000
Negative acknowledgement from receiver
to connection cleardown attempt
Negative acknowledgement from receiver
to connection buildup attempt
Parameter error
Transmission aborted by receiver
Time-out (QVZ) during connection
buildup
Time-out (QVZ) during connection
cleardown
Initiation conflict, both link partners have
high priority
Break
Initiation conflict, both link partners have
low priority
No errors
and A001
H
H
Communications Mode
Receive data invalid
Receive data invalid
No data is transmitted
Receive data invalid
No data is transmitted
Receive data invalid
No data is transmitted
Transmission is
aborted
No data is transmitted
7-55

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