Omron CJ Series, Operation Manual

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4-1 Overview
4-1-2 Overview of Procedure by Data Link Setting Method
4-3
4-1-2 Overview of Procedure by Data Link Setting Method
Step 1: Selecting the Data Link Setting Method
Either of the following methods can be used.
1) Select either user-set data links or automatically set data links after selecting
Online - Automatic Data Link Setup from the Data Link Component.
2) Directly set the software switches in the allocated DM Area words.
Note: The settings in the DM Area can also be made from the Special I/O Unit settings in the I/O
Table Window for CX-Programmer Ver.6.0 or higher.
1. Right-click the Controller Link Unit or SYSMAC LINK Unit in the I/O Table Window, select
Unit Setup from the popup menu, and then select Data Link mode from the Edit
Parameters Dialog Box.
Controller Link Unit: Select
Manual setting, Automatic setting (equality layout), or
Automatic setting (1:N allocation)
SYSMAC LINK Unit: Manual setting, Automatic setting (CIO Area only), Automatic setting
(DM Area only), or Automatic setting (CIO + DM Areas).
2. Place the CX-Programmer online and transfer the parameters to the PLCs. (The Compare
Button can be clicked to set the parameters which verifying against the setting data in the
actual PLCs.
Step 2: Data Link Allocation Area Settings
Manual:
Select Table - Wizard from the Data Link Component online or select
File - New , create the data link tables, and then go online and transfer
the tables to all nodes in the network.
Automatic:
Use one of the following methods.
1) Select
Online - Automatic Data Link Setup from the Data Link
Component and set the parameters for automatically setting data
links.
2) Directly set the parameter area for automatically allocating data
links in the allocated DM Area words.
Note: The Special I/O Unit settings in the I/O Table Window can also be used
to set parameters for automatically allocating data links and then these
parameters can be transferred to the startup node.
Step 3: Starting the Data Links
Automatic or
manual:
Use one of the following methods.
1) Select
Online - Data Link Operation/Status from the Data Link
Component, select the RUN Option under Operation and then
click the Set Button.
2) Turn ON the Data Link Start Bit in the DM Area words allocated to
the start node and then cycle the power to the PLC. (Alternately,
leave the power to the PLC ON and turn the Data Link Start Bit
OFF and then back ON.)
Note: The Special I/O Unit settings in the I/O Table Window can also be used
to set parameters for automatically allocating data links, the Data Link
Start Bit can be set to be turned ON and then these parameters can be
transferred to the startup node.