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3 Data Exchange with the CPU Unit
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
3-2 Device Variables for CJ-series Unit (Software
Switches, Statuses)
3
3-2-7 Master Status 1
Name of device variable for
CJ-series Unit
Type R/W Area Function
*_Mstr1CycleTmSetErr BOOL R Communi-
cations
Cycle Time
Setting
Failed
<Operation specifications>
TRUE:
Indicates that an error occurred when set-
ting *_Sw1CycleTmTmpSet (Temporary
Setting Switch for Communications Cycle
Time) or *_Sw1CycleTmSetCmd (Com-
munications Cycle Time Setting Switch).
Once this bit changes to TRUE, it will
remain TRUE until the operation is suc-
cessfully completed with the device vari-
able for CJ-series Unit.
FALSE:
Indicates that the error did not occur. The
bit changes to FALSE when the operation
is successfully completed.
Default: FALSE
*_Mstr1IOCommSta BOOL R I/O Data
Communi-
cations Sta-
tus
<Operation specifications>
TRUE:
Indicates that at least one slave is per-
forming remote I/O communications.
Usage example: When writing the user
program for master remote I/O communi-
cations, use this bit as an N.O. input con-
dition to control slave I/O processing.
FALSE:
Indicates that remote I/O communications
are not conducted with any slaves.
Default: FALSE
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