Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 468)

Troubleshooting and Diagnostics
19-37
Special Instruction Display
The Special Display feature provides an appropriate pre-formatted display output for
monitoring each type of data. You can directly display the data table addresses for an
instruction. Place the cursor on an instruction, and press [F8] Display , then [F8]
Special . The result is a display similar to that shown with the data table monitor
function. See the section on Monitoring Data Table Files in Chapter 4 - Data Table
Addressing and Editing .
Note Using the Special Display function on a PID, MSG, or sequencer instruction will
provide a diagnostics screen specific to each of these instruction types. When on these
screens, notice that you cannot cursor to some fields because they are for status
display only and are not meant to be edited by the user.
Special Display: PID Instruction
The Special Display screen for a PID instruction provides diagnostics information for
monitoring PID execution or programming PID Loop parameters.
Special Display makes it easy to change the parameters which control a PID Loop’s
execution. To protect the PID Loop’s configuration parameters from being changed by
a user who may not be familiar with the loop, use the Security System to limit access to
the data file address for the PID. (Refer to Chapter 20 - Security System .)
To use the PID Special Display:
1. Place the cursor on the PID instruction you want to display.
2. From the top level of the ladder editor, press [F8] Display .