Siemens KS7 Series Spezifikationen PDF herunterladen (Seite 242)

CP 523 Summary

A.7 Feedback Information in Communications Mode 3

Table A-15. Status Info from the CP 523 for Job Number ”A000

”

Possible

Values

Byte Description

0 Status byte 50

1 Permission to send and receive

CPU can neither send nor receive

CPU can send

CPU can receive

CPU can send and receive

2 Coordination byte 'send' (CBS) Table A-18.

3 - 7 Not significant

Table A-16. Status Info for Send Request ”A001

”

Possible

Values

Byte Description

0 Status byte 50

1 Send request accepted

Send request rejected

2 Coordination byte 'send' (CBS) Table A-18.

3 - 5 Not significant

6 Number of message blocks in message frame 00

to 20

7 Number of message frames in Receive mailbox 00

to 64

Table A-17. Status Info for Receive Request ”A080

”

Possible

Values

Byte Description

0 Status byte 50

2+3 Message frame length in bytes 0000

to 0100

4+5 Not significant

1 Coordination byte 'receive' (CBR) Table A-19.

6 Number of message blocks in the Receive

message frame

to 20

7 Number of message frames in the Receive mailbox 00

to 64

EWA 4NEB 811 6044-02a

A-13

1 2 ... 237 238 239 240 241 242 243 244 245 246 247 ... 256 257

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