WAGO -I/O-SYSTEM 750 Series Manual page 118

118 • Appendix
Mailbox command - Reference
Read list of offline slaves (GET_LOS_A/B, 0x61)
This command is used to read out a list of slave addresses, which can cause
the offline phase to be initiated when configuration errors occur (List of
Offline Slaves LOS).
Here, the user himself can decide how the AS-Interface master is to respond to
a configuration error on the AS-Interface. Hence, with critical slaves, the
master can be switched directly into the offline phase while, with less critical
slaves, the error message "configuration error" is sent to the host, but the AS-
Interface is not switched offline.
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
0x61
-
4 3 2 1
2 2 2 2
0x61
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