Publication 1762-UM001D-EN-P - March 2004
C-6 Troubleshooting Your System
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. These types of module errors are typically reported
in the controller’s I/O status file. Refer to the MicroLogix 1200 and
1500 Programmable Controllers Instruction Set Reference Manual,
publication 1762-RM001 for more information.
.
Extended Error Information Field
Check the extended error information field when a non-zero value is
present in the module error field. See Table C.5 on page C-7.
Hardware Errors
General or module-specific hardware errors are indicated by module
error code 2. See Table C.5.
Configuration Errors
If you set the fields in the configuration file to invalid or unsupported
values, the module ignores the invalid configuration, generates a
non-critical error, and keeps operating with the previous
configuration.
The table below lists the configuration error codes defined for the
module.
Table C.4 Module Error Types
Error Type Module Error Field Value
Bits 11 through 09
(Binary)
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 is set to zero.
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