Publication 1764-UM001B-EN-P - April 2002
5-2 Using Trim Pots and the Data Access Tool (DAT)
Trim Pot Information Function File
The composition of the Trim Pot Information (TPI) Function File is
described in the MicroLogix 1200 and MicroLogix 1500 Instruction Set
Reference Manual, publication 1762-RM001.
Error Conditions
If the controller detects a problem/error with either trim pot, the last
values read remain in the data location, and an error code is put in the
error code byte of the TPI file for whichever trim pot had the
problem. Once the problem/error is corrected, the error code is
cleared. The error codes are described in the MicroLogix 1200 and
MicroLogix 1500 Instruction Set Reference Manual, publication
1762-RM001.
Data Access Tool (DAT)
The DAT is a convenient and simple tool that provides an interface for
editing and monitoring data. The DAT has five primary features:
• provides direct access to 48 bit elements
• provides direct access to 48 integer elements
• provides two function keys
• displays controller faults
• allows removal/insertion under power
DAT Keypad and Indicator Light Functions
The DAT has a digital display, 6 keys, an up/down key, and 7
indicator lights. Their functions are described in the table on page 5-3.
F1
BIT
F2
INT
ESC
ENTER
PROTECTED
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