Omron CJ1W-DRM21, Operation Manual

Page: 328 / 350

Appendices
A-36
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
The settings for remote I/O communications connections differ depending on the allocation method,
as outlined below.
z
Fixed Allocations or User-set Allocations Using Device Variable for CJ-series
Unit
The Master CJ-series DeviceNet Unit automatically selects either poll or bit-strobe, whichever
makes the communications cycle time shortest.
z
User-set Allocations Using the CX-Integrator
The Master CJ-series DeviceNet Unit can make an automatic selection, the same as above, or the
user can select up to two connections for a Slave. The setting method is outlined below.
1
Select the Master Node in the Network Configuration Window in the CX-Integrator.
2
Select Device – Parameters – Edit – All Masters and select the corresponding Slave. Click the
Detailed Settings Button.
3
On the Connection Tab Page shown below, select a check box.
• Automatic selection
• User selection
Select up to two connections from poll, bit–strobe, COS and cyclic. COS and cyclic connec-
tions cannot be used at the same time.
Connections Using Allocations
Allocation method Contents
With CX-
Integrator User-set allocations
from the CX-Integra-
tor The user can select the connection to be used for each node address
with the CX-Integrator e.g., poll could be used for data and COS
could be used for status. You can specify automatic selection or user
selection. You can use two connections simultaneously for one slave
(but you cannot use COS and cyclic simultaneously.)
Without CX-
Integrator Fixed allocation
(scan list disabled or
enabled) Only 1 connection, automatically selected by the DeviceNet Unit.
(Either a polling or bit-strobe connection is used.)
User-set allocations
using device vari-
ables for CJ-series
Unit Only 1 connection, automatically selected by the DeviceNet Unit
based on the I/O area set in the Master User-set Allocations Setup
Table.
Setting Connection Type