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What Are Data Links?
Section 5-1
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.
5-1-1
Data Link Specifications
Note
For 62-node configuration
# 1
# 2
# 3
# 4
Send data of node 1
Communications error type
Data link area
A node separates from the network while
a data link is running.
Data received immediately prior to the
error continues to be refreshed in the
data link areas of the relevant nodes.
A node does not join the network after the
data links start.
Zero (0) data continues to be refreshed in
the data link areas of the relevant nodes.
Item
Description
No. of data link
nodes
32 max., 2 min.
Number of data
link words
Number of
send words
per node
CS/CJ Series
CS1W-CLK23, CJ1W-CLK23: 4,000 max.
CS1W-CLK21-V1, CJ1W-CLK21-V1:
1,000 max.
C200HX/HG/HE, CVM1/CV, CQM1H:
1,000 max.
Personal computer
38F7-CLK23: 4,000
max.
3G8F7-CLK21-V1, 3G8F5-CLK21-E:
1,000 max.
Number of
send/receive
words per
node
CS/CJ Series
CS1W-CLK23, CJ1W-CLK23: 20,000 max.
CS1W-CLK21-V1, CJ1W-CLK21-V1:
20,000 max. (unit Ver. 1.2 or later)
12,000 max. (pre-Ver. 1.2)
C200HX/HG/HE, CVM1/CV, CQM1H:
8,000 max.
Personal computer:
32,000 or 62,000 max. (See note.)
Allocation of data
link areas
Manual setting Area 1, 2:
Bit-access area (IR, CIO, and LR
Areas)
DM Area (DM and EM Areas)
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-
ting equality
layout
Area 1: IR, CIO, or LR Area
Area 2: DM Area (DM and EM Areas)
Automatic set-
ting
1:N allocations
Area 1, 2:
Bit-access area (IR, CIO, and LR
Areas)
DM Area (DM and EM Areas)
Summary of Contents for C200HW-CLK21
Page 3: ...iv ...
Page 9: ...x ...
Page 12: ...xiii TABLE OF CONTENTS Index 367 Revision History 373 ...
Page 13: ...xiv ...
Page 19: ...xx ...
Page 57: ...32 Application Precautions Section 1 5 Example CX Programmer Response Timeout Setting ...
Page 69: ...44 Message Service Procedure Section 2 2 ...
Page 111: ...86 Constructing Networks with Repeater Units Section 3 4 ...
Page 154: ...129 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 261: ...236 Response Codes Section 6 7 ...
Page 297: ...272 Message Delay Times Section 8 4 ...
Page 353: ...328 Handling Precautions Section 9 6 ...
Page 364: ...339 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 365: ...340 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 369: ...344 Standard Models Appendix A ...
Page 391: ...366 Using the Relay Terminal Block Appendix C ...
Page 397: ...372 Index ...
Page 401: ...376 Revision History ...