KEYENCE KV Series - Manual (Page 168)

Chapter 4 Monitor
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4.4 Ladder Monitor
This section describes the monitor start/stop procedure, the screen displayed while
the monitor is running, the PLC mode setting, etc.
4.4.1 Outline of the ladder monitor
The ladder monitor transfers ladder programs to the PLC, displays the actual PLC
operation in real-time, and offers the following functions.
• Starts and stops the monitor.
• Changes the operation mode (RUN or STOP).
• Displays registered comments.
• Changes the current values, etc. using the dialog bar.
4.4.2 Displaying the ladder monitor window
File ➔ Ladder Monitor
If a displayed ladder diagram is closed, select "Ladder Monitor" from the "File" menu
to display it again, or click the
button.
Note 1: This operation is not typically required because the ladder monitor window
is always displayed when the simulator is started up from the editor.
Note 2: Only one ladder monitor window can be opened at a time.
Note 3: This function is disabled when the ladder window is already open.
4.4.3 PLC error check
A PLC error check is always performed while the monitor is running.
When an error occurs in the PLC, an error message is displayed.
➮ For error messages and countermeasures, refer to "Appendix A Error Message List" on page 2-156.
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