Allen-Bradley MicroLogix 1200 User Manual page 118

C-6 Troubleshooting Your System
Table C.4 Module Error Types
Error Type Module Error Field Value
Bits 11 through 09
(Binary)
No Errors 000
Hardware Errors 001
Configuration Errors 010
Publication 1762-UM001D-EN-P - March 2004
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.
.
Description
No error is present. The extended error field holds no additional information.
General and specific hardware error codes are specified in the extended error
information field.
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.
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.
If no errors are present in the module error field, the
TIP
extended error information field is set to zero.
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.