ABB 07CR41 Operating Manual page 115

Class 1 errors:
Fatal error
Error signaled by the
error bit:
Type of error M 255,11= 1
signaled by:
Error number in: MW 254,00
Detailed information
in:
Information 1 MW 254,01
Information 2 MW 254,02
Information 3 MW 254,03
Information 4 MW 254,04
Hard version of unit* MW 254,05
Soft version of unit* MW 254,06
Serial number of
unit* MW 254,07
Acknowledgement
via programming in
the basic unit
This
acknowledgement
only resets the errors
on the basic unit, not
those signaled by a
remote unit
Acknowledgement
via programming in
the basic unit and in
remote units
* Information not available on certain AC31 devices
The error bit M 255,10 is 1, if any of the error bits M 255,11 to M 255,14 have the value of 1. The basic unit has not detected an
error if M 255,10 = 0.
The error bit M 255,10 is automatically reset to, when the error type bits are acknowledged.
A class 4 error 4 (M 255,14=1) 15 automatically acknowledges, when MW 255,08 ≤. Class 3 or 4 type errors may be
acknowledged by setting M 255,13 or M 255,14 to 0.
The information word values are updated with each new error. These words are not automatically reset to 0. Reset is possible
by writing the value 0 in these words, either online or via a program.
Advant Controller AC 31 / Issued: 01.99
Class 2 errors: Class 3 errors:
Serious error Light error
M 255,10= 1
M 255,12= 1 M 255,13= 1
MW 254,08 MW 255,00
MW 254,09 MW 255,01
MW 254,10 MW 255,02
MW 254,11 MW 255,03
MW 254,12 MW 255,04
MW 254,13 MW 255,05
MW 254,14 MW 255,06
MW 254,15 MW 255,07
M 255.13 is set to 0 after
error recovery
With the CS31QU function block
7 – 5
Class 4 errors:
Warnings
M 255,14= 1
MW 255,08
MW 255,09
MW 255,10
MW 255,11
MW 255,12
MW 255,13
MW 255,14
MW 255,15
M 255,14 is set to 0
after error recovery
Diagnosis
3