Procedure For Using Remote I/O Master - Omron CJ1W-DRM21 Operation Manual

4 Remote I/O Master Communications
4-1-4

Procedure for Using Remote I/O Master

Fixed Allocations for Remote I/O
Change *_Sw1MstrEnblCmd (Master Enable Switch) to TRUE. (The master will remain enabled even if the power is turned OFF and back ON again.)
Perform the following steps to
start with the scan list disabled.
1) Change *_Sw1MstrFixAloc1Cmd to
*_Sw1MstrFixAloc3Cmd (Master
Fixed Allocation Setting 1 to 3
Switch) to TRUE.
2) Monitor and check the Registered
Slave Table (*_RegSlavTblSta,
*_RegSalvTblNbSta[0] to [63]) to
see if communications are possible
with registered slaves.
3) Change *_Sw1SListEnblCmd (Scan
List Enable Switch) to TRUE.
4-8
Turn ON the communications, slave, and Controller power supplies.
Switch the CPU Unit to PROGRAM mode.
*2 Execute this only when master communications are disabled.
(If the Master Enable Switch is turned ON when master communications are enabled, a
Unit error will occur and a C2 error will be displayed on the 7-segment indicator on the front panel.)
Perform the following steps to
re-register the scan list when starting
*3
with the scan list enabled.
1) Change *_Sw1SListClrCmd
2) Change *_Sw1MstrFixAloc1Cmd to
3) Monitor and check the Registered
4) Change *_Sw1SListEnblCmd (Scan
Master remote I/O communications will begin with the scan list enabled.
(Use the software switches to start or stop communications.)
Check to see if both the MS and NS indicators are lit green on the Master Unit and all slaves.
Define user-defined variables in the area to which I/O data is allocated.
Switch the CPU Unit to RUN mode.
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
*1 Turn ON the communications power supply prior to
turning ON the slave power supply or the slaves may
not go online.
*3
(Scan List Clear Switch) to TRUE.
*_Sw1MstrFixAloc3Cmd
(Master Fixed Allocation Setting
1 to 3 Switch) to TRUE.
Slave Table (*_RegSlavTblSta,
*_RegSalvTblNbSta[0] to [63]) to
see if communications are possible
with registered slaves.
List Enable Switch) to TRUE.
*3 The mode can be confirmed from the dots on the
7-segment indicator on the Master Unit.
Left dot not lit:
Left dot flashing: Scan list disabled
Perform the following steps to make no changes
to the fixed allocations area and scan
*3
list when starting with the scan list enabled.
Scan list enabled