Omron C200HW-CLK21 Operation Manual page 134

What Are Data Links?
5-1-1 Data Link Specifications
Send data of node 1
Note The following table shows the status of the data link refresh area when a node
registered in the data link table generates a communications error.
Communications error type
A node separates from the network while
a data link is running.
A node does not join the network after the
data links start.
Item
No. of data link
nodes
Number of data
link words
Allocation of data
link areas
# 1 # 2
Data received immediately prior to the
error continues to be refreshed in the
data link areas of the relevant nodes.
Zero (0) data continues to be refreshed in
the data link areas of the relevant nodes.
Description
32 max., 2 min.
Number of send/receive words per node (total of area 1 and
area 2):
CS/CJ Series:
C200HX/HG/HE, CVM1, CV, CQM1H:
IBM PC/AT or compatible: Manual setting: Up to 32,000
Number of send words per node
(total of area 1 and area 2): Up to 1,000
Manual setting Area 1, 2:
Unit Ver. 1.2 or later: Area 1 and Area 2 can be
set in the same memory area.
Pre-Ver. 1.2: Area 1 and Area 2 cannot be set
in the same memory area.
Automatic set- Area 1: IR, CIO, or LR Area
ting equality
Area 2: DM Area (DM and EM Areas)
layout
Automatic set- Area 1, 2:
ting
1:N allocations
Section 5-1
# 3
Data link area
12,000 max. (pre-Ver. 1.2)
20,000 max. (unit Ver. 1.2 or later)
Up to 8,000
Automatic setting: Up to 8,000
Bit-access area (IR, CIO, and LR
Areas)
DM Area (DM and EM Areas)
Bit-access area (IR, CIO, and LR
Areas)
DM Area (DM and EM Areas)
# 4
111