ABB S900 Manual page 41

Table 4-9 Channel-specific diagnostics
Bit
Octet 1
Bit
Octet 2
Bit
Octet 3
Error codes (according to DP standard)
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10..15: reserved
16..31: vendor-specific (S900)
Error codes (CI920)
The meaning of the transmitted error codes can be different for every slot or
module type of a modular slave. In the case of the I/O System S900 different
interpretations are possible for the CI920 and for all I/O modules.
3BDD010422R0101
Communication Interface for PROFIBUS DP, CI920
7..6
Header Slot
10 0..16
7..6
I/O Channel
00: reserved 0..8
01: input
10: output
11: input / output
7..5
Channel type Error
code
000: reserved see
001: 1 bit above
010: 2 bit
011: 4 bit
100: 1 byte
101: 1 word
110: 2 words
111: reserved
reserved
short-circuit
undervoltage (used for underflow)
overvoltage (used for overflow)
overload
overtemperature
wire-break
high limit value exceeded
low limit value fallen below
error
5..0
5..0
4..0
I/O System S900
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