CJ2M-CPU3@/-CPU1@/-MD21@
CJ2M-
Item
CPU11/31
CPU12/32
CPU13/33
CPU14/34
CPU15/35
Peripheral (USB) Port
Baud Rate
USB 2.0-compliant B-type connector
12 Mbps max.
Transmission Distance
5 m max.
• CJ2M-CPU1@ interface: Conforms to EIA RS-232C.
• CJ2M-CPU3@: No serial ports with default system
One of the following Serial Option Boards can be mounted.
• CP1W-CIF01 RS-232C Option Board
Serial Port
• CP1W-CIF11 RS-422A/485 Option Board (not isolated, max. transmission distance: 50 m)
• CP1W-CIF12 RS-422A/485 Option Board (isolated, max. transmission distance: 500 m)
Communications Method
Synchronization Method
Baud Rate
Half-duplex
Start-stop
0.3, 0.6, 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, or 115.2 (kbps)
Transmission Distance
EtherNet/IP Port *7
Media Access Method
Modulation
15 m max.
−
CSMA/CD
Baseband
Transmission Paths
Baud Rate
Star
100 Mbps (100Base-TX)
Transmission Media
Transmission Distance
Shielded twisted-pair (STP) cable; Categories: 5, 5e
100 m (between ethernet switch and node)
Number of Cascade Connections
No restrictions if ethernet switch is used.
CIP Communications: Tag Data Links
Number of Connections
32
1 to 10,000 ms (Unit: 0.5 ms)
Can be set for each connection. (Data will be refreshed at the set interval, regardless of the number
of nodes.)
Packet Interval (Refresh period)
Permissible Communications Band 3,000 packets per second *8
Commu-
nications
Number of Registerable Tag
Type of Tags
32
CIO, DM, EM, HR, WR, and Network symboles
Number of Tags per Connection
8 (Seven tags if PLC status is included in the segment.)
Maximum Link Data Size per Node 640 words
20 words
Maximum Data Size per Connection
(Data is synchronized within each connection.)
Number of Registrable Tag Set
Maximum Tag Set Size
32 (1 connection = 1 segment)
20 words (One word is used when PLC status is included in the segment.)
Maximum Number of Tags
Refreshable in a Single Cycle of
CPU Unit *9
Output/send (CPU Unit to EtherNet/IP): 32
Input/receive (EtherNet/IP to CPU Unit): 32
Data Size Refreshable in a Single
Cycle of CPU Unit *9
Output/send (CPU to EtherNet/IP) : 640 words
Input/receive (EtherNet/IP to CPU): 640 words
Change of Tag Data Link Parameter
Settings during Operation
OK *10
Multi-cast Packet Filter *11
OK
CIP Communications: Explicit
Messages
−
Class 3 (Connection Type)
Number of connections: 128
Maximum number of clients that can communicate at the same time : 16
Maximum number of servers that can communicate at the same time: 16
UCMM (Non-connection Type)
OK
CIP Routing
(CIP routing is enabled for the following remote Units: CJ1W-EIP21, CJ2H-CPU6@-EIP, CJ2M-
CPU3@, and CS1W-EIP21.)
FINS Communications
FINS/UDP
−
OK
FINS/TCP
16 connections max.
Conforms to A5.
EtherNet/IP Conformance Test
10Base-T/100Base-TX
Auto Negotiation/Fixed Setting
EtherNet/IP Interface
*7. The EtherNet/IP port is built into CJ2M-CPU3@ only.
*8. "Packets per second" is the number of communications packets that can be processed per second.
*9. If the maximum number is exceeded, refreshing will require more than one CPU Unit cycle.
*10.When changing parameters, however, the EtherNet/IP port where the change is made will be restarted. In addition, a timeout will temporarily
occur at the other node that was communicating with that port, and it will then recover automatically.
*11.The EtherNet/IP port supports an IGMP client, so unnecessary multicast packets are filtered by using an Ethernet switch that supports IGMP
snooping.
8
OMRON [ OMRON ELECTRONICS LLC ]
