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CP 523
A.7
Feedback Information in Communications Mode 3
Table A-15. Status Info from the CP 523 for Job Number "A000
Byte
0
Status byte
1
Permission to send and receive
2
Coordination byte 'send' (CBS)
3 - 7
Not significant
Byte
0
Status byte
1
Send request accepted
Send request rejected
2
Coordination byte 'send' (CBS)
3 - 5
Not significant
6
Number of message blocks in message frame
7
Number of message frames in Receive mailbox
Table A-17. Status Info for Receive Request "A080
Byte
0
Status byte
1
Coordination byte 'receive' (CBR)
2+3
Message frame length in bytes
4+5
Not significant
6
Number of message blocks in the Receive
message frame
7
Number of message frames in the Receive mailbox
EWA 4NEB 811 6044-02a
Description
CPU can neither send nor receive
Table A-16. Status Info for Send Request "A001
Description
Description
CPU can send
CPU can receive
CPU can send and receive
Summary
"
H
Possible
Values
50
H
00
H
01
H
80
H
81
H
Table A-18.
"
H
Possible
Values
50
H
01
H
00
H
Table A-18.
00
to 20
H
H
00
to 64
H
H
"
H
Possible
Values
50
H
Table A-19.
0000
to 0100
H
H
00
to 20
H
H
00
to 64
H
H
A-13
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