What Are Data Links - Omron SYSMAC CS1W-RPT01 Operation Manual

What Are Data Links?

5-1 What Are Data Links?
Functions supported by CS/CJ-series Controller Link Unit Models
Note
108
Data links automatically exchange data in the preset areas between nodes
(PLCs and/or computers) on one network. Data links can be freely created for
CS/CJ-series PLCs, C200HX/HG/HE PLCs, CVM1, CV-series PLCs,
CQM1H-series PLCs, and IBM PC/AT or compatible computers.
Two data link areas, area 1 and area 2, can be set for each node. Data links
can be set in either of the following ways.
Model
Item
Maximum number of data
link words (data link area for
sending/receiving that is cre-
ated for a single node in a
single CPU Unit)
Maximum number of send
words (total for areas 1 and
2)
Data Link Area
1. Use the CX-Integrator to set a data link area in which the number of send
and receive words exceeds 12,000 words, or to set data link tables that al-
locate the same area for Area 1 and Area 2.
2. Use the CX-Integrator Data Link Setting Tool version 3.2.1.1 or later to set
data link tables with more than 1,000 send words per node. For information
on checking the version number, refer to Checking the CX-Integrator Data
Link Setting Tool Version on page viii.
• Data link areas can be manually set by inputting data link tables using
Support Software. Data link tables are created to define the data links.
These tables enable free allocation of data link areas.
• Data links can be set automatically from a Programming Device. With
automatically set data links, all link areas are the same size.
Both automatic setting and manual setting cannot be used together in the
same network. The following rules apply to these two methods of setting data
links.
• Data links are enabled concurrently for area 1 and area 2.
• Separate settings (data link start words and send area size) are made in
area 1 and area 2. The sequences of send and receive words are the
same in area 1 and area 2.
• Not all nodes must participate in the data links.
CS1W-CLK23
CJ1W-CLK23
Unit version 1.2
20,000 max.
4,000 max. (for 1,000 max.
user settings)
The same area cannot be allocated
for both Area 1 and Area 2.
Section 5-1
CS1W-CLK21-V1
CJ1W-CLK21-V1
Pre-Ver. 1.2
12,000 max.
The same area
can be allocated
for both Area 1
and Area 2.