Omron CJ1W-DRM21, Operation Manual

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3-13
3 Data Exchange with the CPU Unit
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
3-2
De
vice V
a
riab
les
f
o
r CJ-series
Unit (Software
S
w
itc
h
es, Statuses)
3
3-2-1 Soft
w
a
re Switches 1
*_Sw1MstrEnblCmd BOOL RW Master
Enable
Switch <Operation specifications>
FALSE
→
TRUE:
Enables master communications. (The
Unit automatically restarts.)
Once enabled, the Unit will function as a
Master until
*_Sw1MstrDsblCmd (Master
Stop Switch) is changed to TRUE, regard-
less of whether the power is turned OFF
and back ON again.
Note 1 Master communications are
enabled by default.
2 If this bit is changed to TRUE with
master communications enabled,
a Unit status error will occur due
to a software switch operation
error and a C2 error will be dis-
played on the front 7-segment
indicator. The 7-segment indica-
tor will go out automatically after
30 seconds.
FALSE:
Returns to FALSE at the start of master
communications.
Default: FALSE
<Operation conditions>
• CPU Unit is operating in PROGRAM
mode.
• Master function is stopped.
*_Sw1MstrDsblCmd BOOL RW Master Dis-
able Switch <Operation specifications>
FALSE
→
TRUE:
Stops master communications. (The Unit
automatically restarts.)
Set this switch to TRUE if the Unit will be
used only for slave communications.
FALSE:
Returns to FALSE after master communi-
cations stop.
Default: FALSE
<Operation conditions>
• CPU Unit is operating in PROGRAM
mode.
• Master function is enabled.
Name of device variable for
CJ-series Unit
Type R/W Area Function