Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001C-EN-P - October 2009
450 LCD - LCD Information
For example, if old POT0 =100, new TMIN=200 and TMAX=50, controller
sets (1) ERR bit. This means a Trimpot range error has occurred at
program download.
For more information about Trimpot functionality, refer to Using Trim
Pots described in the MicroLogix 1100 Programmable Controllers User
Manual, publication 1763-UM001.
LCD Module Operation Error Number (ERN)
LCD Module Operation Error Number (ERN) shows the error code when
an error occurs in LCD configurations and operation.
Target Bit File Number (TBF)
Target Bit File Number (TBF) specifies the bit file to monitor on the LCD.
When a valid bit file is specified, the Monitoring and Bit menus are
available. Up to the first 48 bits (3 words) of the specified bit file can be
monitored and modified. For more information, refer to Using Trim Pots
described in the MicroLogix 1100 Programmable Controllers User Manual,
publication 1763-UM001.
Feature Address Data Format Type User Program
Access
ERN - LCD Module
Operation Error Number
LCD:0.ERN word (INT) status read-only
LCD Error Codes
Error Code Name Description
0 None of Error Normal condition
1 Trimpot Hardware fault The retentive trim pot(s) value crashed by
external failure as like battery fault error.
2 Trimpot Range Over The Trimpot range of new program is range over.
Feature Address Data Format Type User Program
Access
TBF- Target Bit File
Number
LCD:0.TBF word (INT) control read-only
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Allen-Bradley MicroLogix 1100 Specifications

General

Processor	32-bit
Programming Software	RSLogix 500
Mounting	DIN rail or panel mount
Power Supply	24V DC
Type	Compact PLC
Digital Inputs	12
Digital Outputs	8
Analog Inputs	4 (depending on model)
Analog Outputs	Optional with expansion module
Programming Language	Ladder Logic
Operating Temperature	0 to 55 °C (32 to 131 °F)
Series	MicroLogix