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6-13SectionDevice Monitor Function
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6-13 Device Monitor Function
The NT31/NT31C has been equipped with the Device Monitor function which
can be used to change the PC’s operating mode, read/change words in the PC’s
data areas, and display the PC’s error log of a CS1G/CS1H, CPM1, CPM2A,
CPM2C, CQM1, CQM1H, C200HX/HG/HE(-Z)E, or SRM1.
The Device Monitor can perform the following operations:
• Changing the PC’s operating mode
• Displaying/changing the contents of words, displaying/changing the status of
bits, force-setting/force-resetting the status of bits (Registration Monitor)
• Listing the contents of a range of words (Continuous Monitor)
• Displaying the error log and clearing errors (Error Log)
This section provides an overview of the Device Monitor function and explains
how to connect to the PC. For more details, refer to 2-16 Device Monitor Func-
tion in the Reference Manual.
Caution Be sure that it is safe to proceed before using the Device Monitor function to per-
form one of the following operations from the PT.
Changing monitored data
Switching the PC’s operating mode
Force setting or force resetting bits
Changing PVs or SVs
Reference: S The Device Monitor function can be used with Ver. 3.0 and higher versions of
the PT system program only.
S The Device Monitor functions are almost identical to the functions of the Data
Access Console (DAC).
S The Device Monitor function cannot be used with host link or memory link com-
munications.