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What is Network Interconnection?
Section 7-1
• Although a C200HX/HG/HE PLC supports multiple (maximum of 2) Com-
munications Units, it cannot function as a data bridge or a data and com-
munications protocol gateway.
• A CQM1H-series PLC supports only one Communications Unit. It cannot
function as a data bridge or a data and communications protocol gateway.
• Communications across up to eight networks, including the local network
are possible when using a CS/CJ-series CPU Unit with unit version 2.0 or
later. The following conditions and restrictions apply.
• The CPU Unit for all nodes must be a CS/CJ-series CPU Unit with unit
version 2.0 or later.
• Routing tables can be set using the CX-Net in the CX-Programmer
version 4.0 or higher.
• Communications across up to eight networks away are supported by
Controller Link and Ethernet networks only.
• DeviceNet and SYSMAC LINK networks support communications
across up to three networks, the same as previous versions.
Although 2,012 bytes of data (including the header) can be sent and received
with a Controller Link, the maximum amount of data is limited by any network
the data passes through, i.e., the network with the smallest capacity will deter-
mine the limit.
If, for example, data passes through a SYSMAC LINK network as shown in
the figure on the preceding page, the amount of data sent and received from
the Controller Link is limited to 552 bytes (including the header) because the
SYSMAC LINK Network can only handle that many bytes.
See the manual for the network you are using in order to determine the maxi-
mum amount of data for each network.
Bridge
Gateway
Data
Data
Data and communications
protocol gateway
PLC
Controller Link
Controller Link
PLC
Controller Link
SYSMAC NET
C200HX/HG/HE
CVM1 or CV-series PLC
Network 1 (local network)
Network 2
Network 3
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 ...