WAGO -I/O-SYSTEM 750 Series Manual page 110

110 • Appendix
Mailbox command - Reference
Read delta list (GET_DELTA_A/B, 0x57)
The delta list includes the list of slave addresses with configuration errors.
Using the A and B slave switching, this command can also be used for a 6-
byte mailbox. If the A/B flag is not set, the data for the A slaves are
transmitted first and then the data for the B slaves. If the flag is set, the data
for the B slaves are transmitted first and then the data for the A slaves.
Note:
In order to transmit the data for all slaves with a 6-byte mailbox, the
command must be called once with A/B = 0 and once with A/B = 1.
Byte
Byte
...
...
10
Request
7 6 5
2 2 2
1
2 T 0 A/B
Response (for A/B = 0)
7 6 5
2 2 2
1
2 T
3 7A 6A 5A
6 31A 30A 29A
7 7B 6B 5B
31B 30B 29B
4 3 2 1
2 2 2 2
0x57
-
4 3 2 1
2 2 2 2
0x57
Result
4A 3A 2A 1A
...
28A 27A 26A 25A
4B 3B 2B 1B
...
28B 27B 26B 25B
0
2
0
2
0
24A
0
24B
WAGO-I/O-SYSTEM 750
I/O Modules