Omron SYSMAC CX-Programmer 8.1, Operation Manual

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Monitoring Section 4-5
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4-5 Monitoring
This section describes the basic operations for monitoring programs and PLC status.
For program debugging operations, refer to section 5.
4-5-1 Monitoring Start
1 Switch to the online mode as previously described.
2 In the project workspace, select the program to be monitored.
Changing the Operating Mode
To change the PLC operating mode, select a mode as follows.
PROGRAM Mode: PLC - Operating Mode - Program
MONITOR Mode: PLC - Operating Mode - Monitor
RUN Mode: PLC - Operating Mode - Run
The functions that can be used in each operating mode are as follows:
4-5-2 Monitoring SFC Editor
1 Switch to the online mode as previously described.
The monitor screen of the SFC editor is displayed, as shown below. (*1) (*2) (*3)
2 To stop monitoring, select Monitor - Monitoring from the PLC menu.
*1: While the PLC is running, the active step element and the action element under execution
are displayed in yellowish green. The display color can be changed by selecting
Tools -
Options - Appearance .
*2: While in the MONITOR or RUN operating mode, present values will be updated according
to the PLC’s operation status. (Present value monitor)
*3: If an action has an S-series AQ (S, SL, SD), its activity status can be monitored, even
while the step itself is in the inactive status.
Operating mode
Name Program execution Online editing
PROGRAM No OK
Display OK OK
RUN OK No