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18
EtherNet/IP Unit and Built-in EtherNet/IP Port Specifications Section 2-1
Note (1) In this case, pps means “packets per second” and indicates the number
of packets that can be processed in one second.
(2) To use 505 to 1,444 bytes as the data size, the system must support the
Large Forward Open standard (an optional CIP specification). The SYS-
MAC CS/CJ-series Units support this standard, but before connecting to
nodes of other companies, confirm that those devices also support it.
(3) If the maximum data size is exceeded, the data refreshing with the CPU
Unit will extend over two or more cycles.
(4) If status layout is selected in the user settings, the maximum number of
tags that can be received is 19 tags.
(5) If parameters are changed in the EtherNet/IP Unit, however, the Ether-
Net/IP Unit will be restarted. When other nodes are communicating with
the affected node, the communications will temporarily time out and au-
tomatically recover later.
(6) Because the EtherNet/IP Unit is equipped with an IGMP client (version
2), unnecessary multicast packets can be filtered by using a switching
hub that supports IGMP snooping.
(7) The EtherNet/IP Unit uses the TCP/UDP port numbers shown in the fol-
lowing table.
(8) Network symbols can be used only with a CJ2H-CPU6@-EIP or CJ2M-
CPU3@ CPU Unit.
CIP
service
Explicit
messaging
Class 3 (connected) Number of connections: 128
UCMM (unconnected) Number of clients that can communicate at one
time:
32 max.
Number of servers that can communicate at one
time:
32 max.
Number of clients that
can communicate at
one time:
16 max.
Number of servers that
can communicate at
one time:
16 max.
CIP routing CS1W-EIP21
CJ1W-EIP21
CJ2H-CPU@@-EIP
CJ2M-CPU3@
FINS service
(See note 7.)
FINS/UDP Supported
FINS/TCP 16 connections max.
SNMP Agent SNMPv1, SNMPv2c
MIB MIB-II
EtherNet/IP conformance test Conforms to A5
Ethernet interface 10BASE-T or 100BASE-TX
Auto Negotiation or fixed settings
Item CS1/CJ1 CJ2H CJ2M
Service Protocol Port number Remarks
Tag data links UDP 2222 Fixed value
Class 3, UCMM TCP/UDP 44818
DNS UDP 53
FINS/UDP service UDP 9600 Port numbers in the Unit
Setup can be changed with
the CX-Programmer.
FINS/TCP service TCP 9600
FTP TCP 20, 21
SNTP UDP 123
SNMP UDP 161
SNMP trap UDP 162