46 Publication 1769-UM020A-EN-P - December 2009
Chapter 4 Module Diagnostics and Troubleshooting
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.
Extended Error Information Field
Depending upon the value in the module error field, the extended
error information field can contain error codes that are
module-specific or common to all 1769 analog modules.
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
00 0 0 000000000000
Hex Digit 4 Hex Digit 3 Hex Digit 2 Hex Digit 1
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.
TIP
If no errors are present in the module error field, the extended
error information field will be set to zero.
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