3 Data Exchange with the CPU Unit
3-12
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
Name of device variable for
CJ-series Unit
Type R/W Area Function
*_Sw1IOCommStartCmd BOOL RW Remote I/O
Communi-
cations
Start Switch
<Operation specifications>
FALSE→TRUE:
Starts remote I/O communications.
Note 1 The switch is ignored if remote
I/O communications are already
running.
2 This switch resumes remote I/O
communications if they are
stopped by a communications
error.
3 Communications with a slave will
fail even if remote I/O communi-
cations are started when
*_CnctCmd (Disconnect/Con-
nect Switches) is TRUE (Discon-
nect).
FALSE:
Returns to FALSE at the start of remote
I/O communications.
Note This switch will stop remote I/O com-
munications if DIP switch pin 3 on
the front panel (remote I/O commu-
nications stop/continue with a com-
munications error) is ON (stop) and
there is an ongoing communications
or send error.
Default: FALSE
<Operation conditions>
• Master function is enabled.
*_Sw1IOCommStopCmd BOOL RW Remote I/O
Communi-
cations
Stop Switch
<Operation specifications>
FALSE→TRUE:
Stops remote I/O communications.
Once remote I/O communications have
been stopped, they will remain stopped
until the Unit restarts or the remote I/O
communications restart (i.e., until the
Remote I/O Communications Start Switch
is changed to TRUE).
Note 1 The switch is ignored if remote
I/O communications are already
stopped.
2 Message communications will
remain enabled even if remote
I/O communications are stopped.
FALSE:
Returns to FALSE when remote I/O com-
munications stop.
Default: FALSE
<Operation conditions>
• Master function is enabled.