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Chapter 4
Module Diagnostics and Troubleshooting
Module Error Definition
Table
Don't Care Bits
15
14
13
0
0
0
Hex Digit 4
46
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
12
11
10
9
0
0
0
0
Hex Digit 3
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.
Error Type
No Errors
Hardware
Errors
Configuration
Errors
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.
TIP
Extended Error Information
8
7
6
5
0
0
0
0
Hex Digit 2
Module Error
Description
Field Value
Bits 11...09
(Bin)
000
No error is present. The extended error field holds
no additional information.
001
General and specific hardware error codes are
specified in the extended error information field.
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.
If no errors are present in the module error field, the extended
error information field will be set to zero.
Publication 1769-UM020A-EN-P - December 2009
4
3
2
1
0
0
0
0
Hex Digit 1
0
0
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Troubleshooting
