6-8 Special Screens
6-35
6-8-4 Device Monitor
The device monitor is an expansion function of the PT. This function is supported by CPM1A,
CPM2A, CPM2C, CQM1, CQM1H, C200HS, C200HX/HG/HE(-Z), CS1G/CS1H-H, and CJ1G
PLCs.
The device monitor has the following functions.
· Switches the PLC operating modes.
· Displays, changes, and performs force-sets/resets of current values in specified addresses
(registered monitor).
· Displays a list of the current values (continuous monitor) in consecutive addresses (DM,
EM, and WR Area words).
· Displays PLC error information (error logs) and deletes the errors (error information).
Details on methods of opening the Device Monitor Screen are explained here. Refer to De-
vice Monitor in 2-18 Special Functions in the Programming Manual for details on the function
and operation methods.
Note
Always check carefully that the system is safe before performing the following operations us-
ing the device monitor.
· Changing the monitor data and timer/counter current values.
· Switching operating modes.
· Performing force-sets/resets
· Changing timer/counter set values.
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