Table of Contents
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Creating Data Links
4-5-3
Manually Generating Data Link Tables
Item
Common link
Communications cycle time
parameters
Local node
send size
Refresh
PLC type
parameters
Data link start
address
Refresh node order
4-5-4
Table Backup
Note
48
You can manually set the data link words by setting D30000 + 100 x unit num-
ber, bit 5 and bit 4 to OFF. The data links are set in the DM parameter area
allocated to the SYSMAC LINK Unit as a CPU Bus Unit.
The manual settings, made with the CX-Net in CX-Programmer, are as fol-
lows:
Set the data link communications cycle time.
Select automatic or manual setting. Manual setting range: 5 to 255 ms
CIO Area
Set the CIO Area local node send size in
words. Setting range: 0 to 254 words.
DM Area
Set the DM Area local node send size in
words. Setting range: 0 to 254 words.
Select "CS" when using a CS-series SYSMAC LINK Unit.
If using CX-Programmer Ver. 1.2 Service Pack 1, set the CV/CVM1. (If the
CV/CVM1 is set, then only the ranges supported by the CVM1/CV-series
PLCs can be set.)
CIO Area
Set the start address in the CIO Area data link area for the local node.
Setting range: CIO 0000 to 6143
DM Area
Set the start address in the DM Area data link area for the local node.
Setting range: D00000 to D32767
Set in order the node addresses with which the local node will refresh data,
starting with the data link start addresses set above.
If the address of the local node is set, it will send the specified word data to
other nodes. If the address of another node is set, the local node will receive
the data sent by that node. For example, if you enter 3, 2, 1 as the refresh
order, the node addresses will be allocated in the order 3, 2, 1, starting from
the start address. If the local node address is 1, it will receive data from
node 3, then from node 2, and finally, it will send data itself).
Always include the local node in the refresh node order. Data will not be
received from the local node by another other node if the local node is not
specified.
For settings using CX-Net, refer to 4-12 CX-Programmer Procedures.
When using a data link that combines C-series SYSMAC LINK Units, CS-
series SYSMAC LINK Units, and CVM1/CV-series SYSMAC LINK Units, set
the CIO Area data link words bearing in mind that the C-series data links have
a maximum of 64 words from LR0 to LR63.
The data link area must be continuous in the CIO Area and in the DM Area.
Data link tables are automatically stored up in the CPU Bus Unit Settings Area
of the CPU Unit of the SYSMAC LINK Unit involved if backup is specified from
the Support Software. It is advisable, however, for common link and refresh
parameters to be backed up for safety. Back up using the Support Software.
For details, refer to the Support Software operation manuals.
Data link tables are set in the CPU Bus Unit Settings Area of the CPU Unit. If
the CPU Unit is replaced or if the unit number or node address of a SYSMAC
LINK Unit is altered, it is necessary to set the data link tables again.
Contents
Note If 0 is set, the local node
will not send data (i.e., it
will receive only).
Section 4-5
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