ABB AC500 PLC - Page 1078

Byte Number Description Possible Values
4 Diagnosis Byte, error code According to the I/O Bus specification
Bit 7 and bit 6, coded error class
0 = E1
1 = E2
2 = E3
3 = E4
Bit 0 to bit 5, coded error description
5 Diagnosis Byte, flags According to the I/O-Bus specification
Bit 7: 1 = coming error
Bit 6: 1 = leaving error
E1...E4 d1 d2 d3 d4 Identi-
fier
000...06
3
AC500
display
<− Display in
Class Comp Dev Mod Ch Err PS501
PLC
browser
Byte 4
Bit 6...7
- Byte 1 Byte 2 Byte 3 Byte 4
Bit 0...5
PNIO
diag-
nosis
block
Class Inter-
face
Device Module Channel Error
identi-
fier
Error message Remedy
1
)
2
)
3
)
Module error
3 - 31 31 31 43 Internal error in the
module
Replace
module
3 - 31 31 31 9 Overflow diagnosis
buffer
New
start
3 - 31 31 31 26 Parameter error Check
master
3 - 31 31 31 11 Process voltage too
low
Check
process
voltage
3 - 31 31 31 45 Process voltage
gone
Check
process
voltage
3 - 1...10 31 31 17 No communication
with I/O module
Replace
I/O
module
4 - 1...10 31 31 31 At least 1 I/O
Module does not
support failsafe
mode
Check
I/O mod-
ules and
parame-
terization
Device Specifications
Communication Interface Modules (S500) > PROFINET
2019/04/173ADR010121, 13, en_US1078