Omron CJ1W-EIP21 User Manual

• No response will be returned if the command ends normally. A response will be returned only if an error

occurs.

• In some cases, send requests (SEND(192)/RECV(193) instructions) made from the PLC to the EtherNet/

IP Unit or built-in EtherNet/IP port just before execution of the RESET command may not be executed. 

• Applications that use TCP/IP, such as FINS/TCP communications services, are closed immediately before

resetting.

Reads the following data from the EtherNet/IP Unit or built-in EtherNet/IP port: Model number, version, IP
address, subnet mask, FINS UDP port number, mode settings, Ethernet address.

The model number and version of the EtherNet/IP Unit or built-in EtherNet/IP port are returned as ASCII char-
acters occupying 20 bytes each (i.e., 20 characters each). If all bytes are not used, the remaining bytes will be
all spaces (ASCII 20 Hex).

Example Model: CS1W-EIP21, CJ1W-EIP21, CJ2B-EIP21, or CJ2M-EIP21
Example Version: V2.00

By convention, the model number of the built-in EtherNet/IP port on a CJ2H-CPU

@@

-EIP CPU Unit is CJ2B-

EIP21.

By convention, the model number of the built-in EtherNet/IP port on a CJ2M-CPU3

@

 CPU Unit is CJ2M-EIP21.

The IP address and subnet mask of the EtherNet/IP Unit or built-in EtherNet/IP port are returned as 4 bytes
each.

The UDP port number of the EtherNet/IP Unit or built-in EtherNet/IP port for FINS is returned as 2 bytes.

1001

Command too large

05   01

Command code

05   01

20 byte

20 byte

4 byte

Subnet 

mask

4 byte

FINS UDP 

port number

Mode 

setting

6 byte

Ethernet address

Response 

code

Command 

code

Model number

Version

IP address