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CJ2 CPU Unit Software User's Manual - CIP ETI

CJ2 CPU Unit Software User's Manual - CIP ETI

CJ2 CPU Unit Software User's Manual - CIP ETI

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5 Understanding Programming5-5-5 Network Symbols (<strong>CJ2</strong>H-<strong>CPU</strong>6@-EIP and <strong>CJ2</strong>M-<strong>CPU</strong>3@ Only)OverviewTags can be used from exterior devices to access the I/O memory of the local <strong>CPU</strong> <strong>Unit</strong> through thenetwork symbols defined in the <strong>CPU</strong> <strong>Unit</strong>. The <strong>CJ2</strong> <strong>CPU</strong> <strong>Unit</strong>s have an internal tag name server thatcan convert network symbols to actual I/O addresses, and so it is possible to access the <strong>CPU</strong> <strong>Unit</strong>'s I/Omemory from the outside by using tags to access network symbols.Network symbols can be used for the following applications.• Data links with other PLCs on EtherNet/IP• Tag access from outside with host or PT.Set the network symbols in the global symbols tables of the CX-Programmer.<strong>CJ2</strong> <strong>CPU</strong> <strong>Unit</strong>PLCNS-series PTHost computerAccess fromoutside byusing tagsAdditional InformationName: aaData: &200Tag name server for network symbolsName Address Data type Network Symbolaa D100 WORD Publicationbb D200 WORD INPUT&200 Address D100I/O MemoryAddress DataD100 &200D200 &500Refer to the EtherNet/IP <strong>Unit</strong>s Operation <strong>Manual</strong> (Cat. No. W465) for the procedures to createtag data links.55-5 Symbols5-5-5 Network Symbols (<strong>CJ2</strong>H-<strong>CPU</strong>6@-EIPand <strong>CJ2</strong>M-<strong>CPU</strong>3@ Only)<strong>CJ2</strong> <strong>CPU</strong> <strong>Unit</strong> <strong>Software</strong> User’s <strong>Manual</strong>5-49

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