Diagnosis
ABB Control - AC 31 Page 8-11
1SBC 260400 R1001-b 06.99
4.3.4. Class 4 error descriptions
Class 4 error descriptions
Error code in
MW255.08
Dec Hex
Info 1 in
MW 255.09
Info 2 in
MW 255.10
Info 3 in
MW 255.11
Internal unit error 1
D
01
H
Unit type Address
Channel number
Cut wire (detection of open circuit)* 2
D
02
H
Unit type Address
Channel number
Analog output level error 3
D
03
H
Unit type Address
Channel number
Overload 4
D
04
H
Unit type Address
Channel number
Defective 10V output 5
D
05
H
Unit type Address
Channel number
Overload and cut wire* 6
D
06
H
Unit type Address
Channel number
Short circuit 8
D
08
H
Unit type Address
Channel number
Short-circuit + cut wire* 10
D
0A
H
Unit type Address
Channel number
Overload + short-circuit 12
D
0C
H
Unit type Address
Channel number
Short-circuit + overload + cut wire* 14
D
0E
H
Unit type Address
Channel number
The end of the program is not
detected by the system during
startup.
129
D
81
H
--
-
A program syntax error is detected
by the system during startup
131
D
83
H
Program address -
-
Too many historical values are
detected by the system during
startup (max. 256)
132
D
84
H
--
-
The cycle time is missing and
detected by the system during
startup
133
D
85
H
--
-
A missing label for a conditional
step is detected by the system
during startup.
135
D
87
H
Program address -
-
The program is not launched due to
the number of units initialized on the
CS 31 bus being inferior to the
number specified during the
configuration
138
D
8A
H
Number of units
chosen during
configuration
Number of actual
units on the CS31
bus
-
The program is too large for the
memory size
140
D
8C
H
--
-
The system detects a missing end
of sub-program or missing program
during startup
142
D
8E
H
--
-
The system detects a missing
program interrupt or an interrupt
validation.
143
D
8F
H
--
-
The system detects too many sub-
programs (max. 12) during startup.
144
D
90
H
--
-
The system detects too many
historical values in the sub-
programs during startup.
(max. 128 = Sum of nb of calls x nb
of historical values in the sub-
programs)
145
D
91
H
--
-
The system does not detect a sub-
program, corresponding to a call,
during startup
146
D
92
H
--
-
* error detected if previously configured through programming the CS31CO block