Rockwell Automation 1769-IF16V Compact High Density Analog Input Modules - Manual (Page 50)

50 Publication 1769-UM018A-EN-P - October 2008
Chapter 4 Module Diagnostics and Troubleshooting
Non-critical vs. Critical
Module Errors Non-critical module errors are typically recoverable. Channel errors
(over-range or under-range errors, process alarms, and open circuit
errors) are non-critical. Non-critical errors are indicated in the module
input data table.
Critical module errors are conditions that prevent normal or
recoverable operation of the system. When these types of errors
occur, the system typically leaves the run or program mode of
operation until the error can be dealt with.
Critical module errors are indicated in Error Codes on page 51 .
Module Error Definition
Table 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.
Module Error Field
The purpose of the module error field is to classify module errors into
three distinct groups, as described in the table below. The type of
error determines what kind of information exists in the extended error
information field. Refer to your controller manual for details.
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
Module Error Types
Error Type Module Error
Field Value
Bits 11…09
(Bin)
Description
No Errors 000 No error is present. The extended error field holds
no additional information.
Hardware
Errors 001 General and specific hardware error codes are
specified in the extended error information field.
Configuration
Errors 010 Module-specific error codes are indicated in the
extended error field. These error codes correspond
to options that you can change directly. For
example, the input range or input filter selection.