Omron CX-PROGRAMMER V9, Operation Manual

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PART 2: CX-Server PLC Tools
CHAPTER 8 – CX-Server Network Configuration Tool (CX-Net) OMRON
CX-Server PLC Tools_Page 86
Data Link
Data Link tables allow a PLC to be configured so that it can participate in one or more automatic data sharing
schemes, over SYSMAC LINK, SYSMAC NET and Controller Link networks, without the need for special
programming. Words of IO and DM can be set aside for use as data link words, which are allocated to various
nodes in the network. Limits on the amount of data and number of nodes varies with the type of network and the
type of PLC. The allocation of words to nodes is defined by two or more Data Link tables.
Data can only be shared on a single physical network. A gateway cannot be used to pass information from one
network to another.
SYSMAC NET data links can be configured so that both C-Series and CV-Series PLCs can share data. However,
it is a limitation that in these mixed configurations, the master must be a C-Series PLC. There are no such
restrictions on a SYSMAC LINK or Controller Link network.
The Data Link menu includes options to setup the SYSMAC NET, SYSMAC LINK and Controller Link Data
Links.
The DataLinks Editor is used to configure SYSMAC LINK and Controller Link data links, Refer to Chapter 10 –
Data Links.
A separate datalink editor is utilised for configuration of SYSMAC NET datalinks, Refer to Chapter 8 - Offline
SYSMAC NET Data Link Editor for further details.
Data Link Setup
The Data Link Setup dialog varies in title and content according to the type of network connected to the current
PLC; however, the pushbutton functions on each dialog are the same.
The dialog lists the contents of the Data Link table associated with the PLC; initially the Data Link table displayed
is empty, or set to zero, until a table has been opened or read.
SYSMAC NET Data Link Setup
The setup dialog first needs to know whether the Data Link table is written for CV-Series or C-Series PLC type
SYSMAC NET this information is requested using the SYSMAC NET Table Type dialog.
Use the following procedure to setup the SYSMAC NET Data Link.
1, 2, 3… 1. Select the Online Edit Data Link button from the toolbar.
2. Select a setting to indicate the type of SYSMAC NET which is used in the Data Link.
3. Select the OK pushbutton to continue (the Data Link Setup dialog is displayed), or the
Cancel pushbutton to abort the operation.
Opening a Table
Use the following procedure to open a table.
1, 2, 3…
1. Select the Open pushbutton to open a Data Link table from disk (alternatively select the
Read pushbutton to view the table in the PLC).
2. Select the appropriate table and select the OK pushbutton.
3. The Data Link Setup dialog is now populated with the contents of the Data Link file.
4. Select the Write pushbutton to transfer the table to the PLC.
5. Select the Verify pushbutton to compare the contents in the dialog with those in the PLC.
Note: Data Link tables have a ‘.SL3’ (SYSMAC LINK), ‘.SN3’ (SYSMAC NET) or ‘.CL3’
(Controller Link) filename extension.
Editing a Table
To edit the displayed Data Link table, click on the Edit pushbutton; the associated offline table editor is used, refer
to Chapter 10 – for SYSMAC LINK / Controller Link Data Link Editor and Chapter 8 - Offline SYSMAC NET
Data Link Editor for further details.