Error Diagnosis and Elimination
S5-95F
15.3.6 Static Image of I/O Errors
Each failsafe input and output is assigned a bit in one of data words DW 38 to DW 55. The
operating system sets a bit in one of these data words when the associated I/O bit indicates an
error.
Error Bits for Onboard DIs
Bit in
DW 38
38.15 38.14 38.13 38.12 38.11 38.10 38.9
38.8
38.7
38.6
38.5
38.4
38.3
38.2
38.1
38.0
Error on
channel
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
Onboard DIs (byte 33)
Onboard DIs (byte 32)
Error Bits for Onboard DQs, Interrupt DIs and Onboard Counters
Bit in
DW 39
39.15 39.14 39.13 39.12 39.11 39.10 39.9
39.8
39.7
39.6
39.5
39.4
39.3
39.2
39.1
39.0
Error on
channel
7
6
5
4
3
2
1
0
3
2
1
0
B
A
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
Onboard DQs (byte 32)
Counters
Interrupt DIs (byte 59)
Error Bits for I/Os in Slots 0 and 1
Bit in
DW 40
40.15 40.14 40.13 40.12 40.11 40.10 40.9
40.8
40.7
40.6
40.5
40.4
40.3
40.2
40.1
40.0
Error on
channel
7
6
5
4
3
2
1
0
3
2
1
0
3
2
1
0
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
DI (byte 0)
AI (words 64 to 70)
DQ (byte 0)
Error Bits for I/Os in Slots 2 and 3 to Slots 30 and 31
Data words DW 41 to DW 55 have the same meaning as DW 40, and are used to flag errors in the
external I/Os in slots 2 and 3 to 30 and 31.
Data word DW 41 is assigned to slots 2 and 3, data word DW 42 to slots 4 and 5, data word DW 43
to slots 6 and 7, and so on.
15-6
EWA 4NEB 812 6210-02