Identifier-Specific Diagnostics; Channel-Specific Diagnostics - ABB S900 Manual

I/O System S900
Communication Interface for PROFIBUS DP, CI920
7..2
Octet 9 not used
000000

Identifier-specific diagnostics

One bit per slot (module) indicates, whether or not a diagnostic message
exists for the respective slot.
Table 4-8 Identifier-specific diagnostics
Octet 1
Octet 2
Octet 2
Octet 2

Channel-specific diagnostics

Three bytes are provided for every channel error. Only one error can be
reported for one channel in a block. If more than one error occur in a channel,
several blocks are put together.
40
7..6
Header Length
01 000100 = 4
7 6
Slot 7 Slot 6 Slot 5
Slot 15 Slot 14 Slot 13
5 4 3
Slot 4 Slot 3
Slot 12 Slot 11
1..0
I/O module 16
00: data valid
01: module error
10: wrong module
11: missing module
5..0
2 1
Slot 2 Slot 1
Slot 10 Slot 9
3BDD010422R0101
0
Slot 0
Slot 8
Slot 16