User guide

Chapter 11
Processor Modes
11–2
Test Mode
The Test mode allows you to:
• Monitor the current ladder program as it is being executed.
• Use the search function.
• Force I/O.
• Monitor and edit data.
While you are in the Test mode, the processor scans or executes the ladder
program, monitors input devices, and updates the output data files without
energizing output circuits or devices.
The Test mode provides the following ladder program tests:
Continuous Scan – This mode is the same as the Run mode, except output
circuits are not energized. This allows you to troubleshoot or test your ladder
program without energizing external output devices.
Single Scan – In this mode, the processor executes a single operating cycle
which includes reading the inputs, executing the ladder program, and
updating all data without energizing output circuits.
The remaining portion of this chapter takes you step by step through
changing processor modes.
The previous chapters described going online to a processor and
downloading/uploading programs.
Changing the Mode
To change any mode (Program, Test, or Run) the same steps are used.
1. To change your processor operating mode, start at the program utility
display for program 1000, resident in processor node 4.
File Name: 222 Prog Name:1000
File Name Type Size(Instr)
0 System 77
1 Reserved 0
2 222 Ladder 13
3 Ladder 1
F1 F2 F3 F4 F5
OFFLINE UPLOAD DWNLOAD
PRG
CLR_PRC>
MODE
Display toggles between the
processor node address and
the processor operating
mode.
Program Name
In this case, the processor is in the Program mode.
Changing Modes