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CJ1W-EIP21 / EIP21S

CJ-series EtherNet/IP Unit

CJ1W-EIP21 / EIP21S

EtherNet/IP unit with tag data link capacity of 180,000 words or more

EtherNet/IP Units Specifications

Item Specifications
Model number CJ1W-EIP21/EIP21S
Type 100Base-TX *1
Applicable PLCs NJ-series, CJ (CJ1, CJ2) series, CP1H, and NSJ series PLCs. *2
Unit classification CJ-series CPU Bus Unit
Mounting location CPU Rack or Expansion Rack
Number of Units that can be
mounted *2
NJ-series System: 4 max. (including Expansion Racks)
CJ series System and NSJ series System: 8 max. (including Expansion Racks) *3
CP1H System: 2 max.
CPU
Unit
words
used
Allocated CIO Area
words (CPU Bus
Unit words)
25 words/Unit (one unit number's words)
These words contain control bits and flags, the target node PLC's operating and error
information, Unit status, communications status, registered/normal target node
information, and FINS/TCP connection status.
Allocated DM Area
words (CPU Bus
Unit words)
100 words/Unit (one unit number's words)
These words contain the IP address display/setting area.
User-set area Any usable data area words
Target node PLC's operating and error information, and registered/normal target
node information
CPU Bus Unit
System Setup
Not used.
Non-volatile memory within
EtherNet/IP Unit
(See note.)
The following settings are stored in the EtherNet/IP Unit's non-volatile memory.
Note: Unlike the regular Ethernet Units, the CPU Bus Unit Setup Area in the CPU
Unit is not used for these settings.
1. Unit Setup (communications settings for the EtherNet/IP Unit, such as the IP
address, DNS server settings, host name, baud rate, FINS/UDP settings, and FINS/
TCP settings)
2. Tag data link settings (device parameters)
3. User authentication settings (CJ1W-EIP21S only)
4. Operation log (CJ1W-EIP21S only)
Transfer
specifi-
cations
Media access
method
CSMA/CD
Modulation method Baseband
Transmission paths Star form
Baud rate 100 Mbit/s (100Base-TX)
Transmission media Shielded twisted-pair (STP) cable
Categories: 100 Ω at 5, 5e
Transmission
distance
100 m (distance between hub and node)
Number of cascade
connections
There is no limitation when a switching hub is used.
Current consumption (Unit) CJ1W-EIP21: 410 mA max. at 5 V DC
CJ1W-EIP21S: 650 mA max. at 5 V DC
Weight CJ1W-EIP21: 94 g max.
CJ1W-EIP21S: 91 g max.
Dimensions 31 × 90 × 65 mm (W × H × D)
Other general specifications Other specifications conform to the general specifications of the CJ-series.

*1. If tag data links are being used, use 100Base-TX. Otherwise, 10Base-T can be used, but this is not recommended.
*2. For the CJ1W-EIP21S, the following CPU Units are supported.
  CJ2H-CPU[][], CJ2H-CPU[][]-EIP, CJ2M-CPU[][], CJ1G-CPU4[]P
*3. Up to seven EtherNet/IP Units can be connected to a CJ2H-CPU6[]-EIP. Up to two EtherNet/IP Units can be connected to a CJ2M CPU Unit.

Communications Specifications

Item Specifications
NJ CJ2 CJ1
CIP
service
Tag data
links
(Cyclic
communi-
cations)
Number of connections 256
Packet interval
(refresh cycle)
0.5 to 10,000 ms (in 0.5-ms units)
Can be set independently for each connection.
(Data is refreshed over the network at the preset interval and
does not depend on the number of nodes.)
Allowed
communications
bandwidth per Unit
6,000 to 12,000 pps *1 *2
Number of tag sets 256
Tag types CIO Area, DM Area, EM Area, Holding Area, Work Area, and
network symbols *3
Number of tags per
connection (= 1 tag set)
8 (7 tags when the tag set contains the controller status)
Maximum link data size
per node
(total size of all tags)
184,832 words
Maximum data size per
connection
504 bytes (252 words) or 1444 bytes (722 words) *4
Data synchronicity is maintained within each connection.
Number of registrable
tag sets
256 (1 connection = 1 tag set)
Maximum size of 1 tag
set
722 words
(The controller status uses 1 word when the tag set contains the
PLC status.)
Maximum number of tags
that can be refreshed
per CPU Unit cycle *5
Output/Transmission
(CPU to EtherNet/IP):
256
Input/Reception
(EtherNet/IP to CPU):
256
Output/Transmission (CPU to
EtherNet/IP): 19
Input/Reception (EtherNet/IP to CPU):
20 *6
Data that can be
refreshed per CPU Unit
cycle *5
The layout of the
allocated CIO Area
words is the
defauly. *7
Output/Transmission
(CPU to EtherNet/IP):
6,432 words
Input/Reception
(EtherNet/IP to CPU):
6,432 words
Output/Transmission (CPU to
EtherNet/IP): 7,469 words
Input/Reception (EtherNet/IP to CPU):
7,469 words
Changing tag data link
parameters during
operation
Supported *8
Multicast packet filter
function *9
Supported
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.
CIP routing *10 Supported
CJ1W-EIP21/EIP21S, CS1W-EIP21/EIP21S,
NJ-501-[][][][], NJ-301-[][][][],
CJ2H-CPU[][]-EIP, CJ2M-CPU3[]
FINS service *11 FINS/UDP Not supported Supported
FINS/TCP Not supported 16 connections max.
SNMP Agent SNMPv1, SNMPv2c, SNMP trap
MIB MIB-II
EtherNet/IP conformance test CJ1W-EIP21S: CT17
CJ1W-EIP21: CT11
Ethernet interface 10BASE-T or 100BASE-TX
Auto Negotiation or fixed settings

*1. In this case, pps means "packets per second" and indicates the number of packets that can be processed in one second.
*2. When using CJ1W-EIP21S or CJ1W-EIP21 with version 3.0 or later.
  When using CJ1W-EIP21 with version 2.1 or earlier, the allowed communications bandwidth per Unit is 6,000 pps.
*3. Network symbols can be used for the following CPU Units.
  NJ501-[][][][]/NJ301-[][][][]/CJ2H-CPU6[]-EIP/CJ2M-CPU3[]/CJ2H-CPU6[] withe unit version 1.6 or later/CJ2M-CPU1[] with unit version 2.2 or later
*4. 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 CS/CJ-series Units support this standard, but before connecting to nodes of other companies, confirm that those devices also support it.
*5. If the maximum data size is exceeded, the data refreshing with the CPU Unit will extend over two or more cycles.
*6. If status layout is set to user settings, the maximum number of tags is as follows.

Condition Output/Transmission Input/ Reception
CJ1W-EIP21S 18 18
CJ1W-EIP21 19 19

*7. The table below shows value when the layout type is User defined.

When connected to CJ1 CPU Unit When connected to CJ2 CPU Unit
EIP21 EIP21S EIP21 EIP21S
Data (words) that can be refleshed per CPU Unit cycle Output/Transmission 7405 7321 6368 6172
Input/Reception 7405 7385 6368 6236

*8. If parameters are changed in the EtherNet/IP Unit, however, the EtherNet/IP Unit will be restarted. When other nodes are communicating with the affected node, the communications will temporarily time out and automatically recover later.
*9. Because the EtherNet/IP Unit is equipped with an IGMP client, unnecessary multicast packets can be filtered by using a switching hub that supports IGMP snooping.
*10. When NJ-Series CPU Units is described, Supported only by the EtherNet/IP Units with unit version 2.1 or later and NJ-Series CPU Units with unit version 1.01 or later.
*11. The EtherNet/IP Unit uses the TCP/UDP port numbers shown in the following table.

Service Protocol Port number Remarks
CJ1/CJ2 NJ CJ1/CJ2 NJ CJ1/CJ2 NJ
Used by system --- UDP --- 2223, 2224 The port number is fixed.
Tag data links UDP 2222
Class3, UCMM TCP/UDP 44818
DNS UDP 53
BOOTP client --- UDP --- 68
Secure Comm TCP --- 443 --- The port number is fixed.
It is supported by the CJ1W-EIP21S only.
FINS/UDP service UDP --- 9600 --- Port numbers in the
Unit Setup can be
changed with the
CX-Programmer.
Port numbers in the
Unit Setup can be
changed with the
Sysmac Studio.
FINS/TCP service TCP --- 9600 ---
FTP TCP 20, 21 21
SNTP UDP 123
SNMP UDP 161
SNMP trap UDP 162

*10.When NJ-Series CPU Units is described, Supported only by the EtherNet/IP Units with unit version 2.1 or later and
       NJ-Series CPU Units with unit version 1.01 or later.

Unit Versions and Software Versions

The following versions of the Sysmac Studio, CX-Programmer and Network Configurator are required to set EtherNet/IP Units.
Yes: Supported, ---: Not supported

CJ1W-EIP21 Sysmac Studio *1 CX-Programmer *2 Network Configurator for EtherNet/IP
Ver.1.01 or
lower
Ver.1.02 or
higher
Ver.7.1 or
lower
Ver.8.0 or
higher
Ver.8.02 or
higher
Ver.3.40 or lower Ver.3.50 or higher
Ver.1.0 --- --- --- Yes *3 Yes Yes Yes
Ver.2.0 --- --- --- Yes Yes Yes Yes
Ver.2.1 --- Yes --- Yes Yes --- Yes
Ver.3.0 *4 --- Yes --- Yes Yes --- Yes

CJ1W-EIP21S CX-Programmer *2 Network Configurator for EtherNet/IP EIP21S User Management Tool
Ver.9.76 or lower Ver.9.78 or higher Ver.3.72 or lower Ver.3.73 or higher Ver.1.00 or higher
Ver.1.0 --- Yes --- Yes Yes

*1. Available only when connecting with NJ-series CPU Units.
*2. Available only when connecting with CJ1/CJ2-series CPU Units.
*3. The most recent version of the common module for CX-One version 3.[][] must be installed.
*4. Using the Sysmac Studio auto-update (November 2014 or later).

Network Configurator Requirements

The Network Configurator Ver. 3.0 or higher is a software package designed for building, setting, and controlling a multi-vendor EtherNet/IP Network using OMRON's EtherNet/IP. It is included in CX-One version 3.0. The Network Configurator provides the following functions for building, setting, and controlling EtherNet/IP.

Item Specification
System Requirements Refer to the CX-One Catalog (Cat. No. R134), visit your local OMRON website.
Network
connection
method
CS1/CJ1 CJ2 NJ
Serial interface CPU Unit's Peripheral or
RS-232C port
CPU Unit's USB or RS-232C port CPU Unit's USB port
Ethernet
interface
EtherNet/IP Unit's
Ethernet port
CPU Unit's Ethernet port
EtherNet/IP Unit's Ethernet port
Location on Network A single node address is used (only when directly connected to EtherNet/IP).
Number of Units that can be
connected to Network
A single Network Configurator per Network
(More than one Configurator cannot be used in the same system.)
Main
functions
Network control
functions
The Network configuration can be created and edited regardless of whether the
Network Configurator is online or offline.
The Network configuration can be read from a file or the network.
Configuration
functions
The EDS files used by the Network Configurator can be installed and deleted.
Supported file formats Configurator network configuration files (*.ncf)
Configuration files (*.ncf) created using the Network Configurator for EtherNet/IP
(version 2) can be imported by selecting External Data - Import from the File Menu.