ABB 07CR41 Operating Manual page 117

Class 1 error descriptions
Flash EPROM checksum error
Class 2 error descriptions
Defective RAM (user program or
data memory)
Too many simultaneous timers
active on the basic unit during
program execution (maximum 42)
Class 3 error descriptions
Remote unit disconnected
CS31 system bus error (no remote
units connected to the bus)
Note: If there are only analog units
connected to the CS31 system bus,
then this error could occur when
powering up while the analog units
are not initialized.
Reason: Analog units have a fairly
long initialization period. They are
therefore not recognized by the
basic unit during this initialization
phase.
NCB or NCBR error
Note: Error on one of the CS31
lines. Check the red status LED of
NCB or NCBR to locate the
defective line.
Superposed address
Cycle time too short
Advant Controller AC 31 / Issued: 01.99
Error number in Detailed info 1 in
MW 254,00 MW 254,01
Dec Hex
- - -
Error number in Detailed info 1 in
MW 254,08 MW 254,09
Dec Hex
128 80 Memory address
D H
255 FF -
D H
Error number in Detailed info 1 in
MW255,00 MW 255,01
Dec Hex
15 0F Unit type
D H
16 10 -
D H
17 11
-
D H
18 12
D H
200 C8
-
D H
7 – 7
Detailed info 2 in Detailed info 3 in
MW 254,02 MW 254,03
- -
Detailed info 2 in Detailed info 3 in
MW 254,10 MW 254,11
- -
- -
Detailed info 2 in Detailed info 3 in
MW 255,02 MW 255,03
Address -
- -
- -
- -
Diagnosis
3