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7 Tag Data Link Functions
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
7-4 Tag Data Links with Models Other than NJ-Series CPU Units
7
*2 To use a data size of 505 to 1,444 bytes, the system must support a large forward open (an optional CIP spec-
ification). The SYSMAC CS/CJ-series Units support a large forward open, but before you connect to nodes of
other companies, confirm that those devices also support it.
*3 Here, pps means “packets per second” and indicates the number of packets that can be processed in one sec-
ond.
Specifying Tags
You can specify where to assign a tag either with a variable or with a I/O memory address. However,
some CPU Units may not support both of these methods. Communications with the devices are pos-
sible regardless of whether the remote node tags are set using I/O memory addresses or network
variables.
The supported tag specification methods for each CPU Unit are listed in the table below.
Yes: Supported, No: Not supported
* To specify an I/O memory address for a tag, do not specify the I/O memory address for the tag directly. Instead, create a
variable, set an AT specification of the I/O memory address on the Sysmac Studio, and then specify the variable with the AT
specification for the tag.
CPU Unit
Name in Hardware List of
Network Configurator
Network variable
name specification
I/O memory address
specification
EtherNet/IP Unit
NJ-series CPU Unit --- NJ301-1100, NJ301-1200,
NJ501-1300, NJ501-1400, or
NJ501-1500
Ye s
Ye s
*
CJ1W-EIP21 CJ1W-EIP21 (NJ) Yes
Ye s
*
CJ2H-CPU6@-EIP --- CJ2B-EIP21 Yes Yes
CJ1W-EIP21 CJ1W-EIP21(CJ2) Yes Yes
CJ2H-CPU6@ CJ1W-EIP21 CJ1W-EIP21(CJ2) No Yes
CJ2M-CPU3@ --- CJ2M-EIP21 Yes Yes
CJ1W-EIP21 CJ1W-EIP21(CJ2) Yes Yes
CJ2M-CPU1@ CJ1W-EIP21 CJ1W-EIP21(CJ2) No Yes
CJ1 CPU Unit CJ1W-EIP21 CJ1W-EIP21 No Yes
CS1 CPU Unit CS1W-EIP21 CS1W-EIP21 No Yes
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