KEYENCE KV Series - Manual (Page 158)

Chapter 4 Monitor
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4
4.1 Outline of the Monitor Functions
This section outlines the monitor functions and the precautions for use.
4.1.1 Outline of the functions
The monitor compiles (converts) ladder programs created by the editor, transfers the
converted programs to the PLC (Visual KV or conventional KV), and executes them
to confirm the operation status.
As well, programs saved in the currently connected PLC can be transferred to the
personal computer, decompiled, and then executed to confirm the operation status.
The monitor offers the following functions.
• Allows you to confirm the operation status of a program in real-time using the
ladder monitor, timing charts, etc.
• Changes the operation mode of the PLC.
• Allows you to operate input contacts on the monitor screen by disabling the input
refresh and the output. (Visual KV and KV-300 only)
• Easily changes the preset values and current values of timers, counters and
devices.
• Changes the current values of devices all at once by specifying the range.
• Returns some devices to the default values.
4.1.2 Restrictions in the monitor
• After the monitor is stopped, never disconnect the PLC and connect another PLC
while the monitor window is displayed. If you do this, the contents of the ladder
monitor on the monitor may be different from the contents of the ladder program
in PLC, and the program may not operate correctly.
• Write is disabled in the KV-10R(W)/T(W), KV-16R(W)/T(W), KV-24R(W)/T(W),
and KV-40R(W)/T(W)/80R(W)/T(W) while a program is running.
• Minimized windows are not monitored. (The operation speed becomes slow if
there are many devices to be monitored. To prevent this, it is recommended that
you minimize or close the windows which do not need to be monitored.)
• When the entire monitor window is minimized, the monitor is stopped. When
performing monitoring again, select "Start Monitor" from the menu or click the
button.
• Timing charts in the registration monitor are not actuated by a scan on the PLC
side.
• Up to 1000 comments can be transferred. (Visual KV and KV-300 only)
• When "Transfer comment" is specified, comments are always transferred even
when the program has no change. (Visual KV and KV-300 only)
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