Omron CVM1-CLK21, CS1W-RPT01, CJ1W-CLK21-V1, C200HW-CLK21, CQM1H-CLK21, CS1W-CLK21-V1 235

What is Network Interconnection? Section 7-1

Bridge

Controller Link

PLC

Data

Gateway

Controller Link Controller Link	SYSMAC NET
PLC

Data

Data and communications protocol gateway

•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.

C200HX/HG/HE CVM1 or CV-series PLC

•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.

Network 1 (local network) Network 2 Network 3

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.

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