Critical and noncritical errors, Module error definition table – Rockwell Automation 1762-Lxxxx MicroLogix 1200 Programmable Controllers User Manual
Page 125
Publication 1762-UM001G-EN-P - March 2011
Troubleshoot Your System C-5
Critical and Noncritical Errors
Noncritical module errors are recoverable. Channel errors (over-range or
under-range errors) are noncritical. Noncritical error conditions are indicated
in the module input data table. Noncritical configuration errors are indicated
by the extended error code.
Critical module errors are conditions that prevent normal or recoverable
operation of the system. When these types of errors occur, the system leaves
the run mode of operation.
Critical module errors are indicated in Table C.5 on page C-7.
Module Error Definition Table
Analog module errors are expressed in two fields as four-digit Hex format
with the most significant digit as ‘don’t care’ and irrelevant. The two fields are
‘Module Error’ and ‘Extended Error Information’. The structure of the
module error data is shown below.
Table C.3 Module Error Table
‘Don’t Care’ Bits
Module Error
Extended Error Information
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Hex Digit 4
Hex Digit 3
Hex Digit 2
Hex Digit 1