Datasheet

CJ2M-CPU3@/-CPU1@/-MD21@

Peripheral (USB) Port

EtherNet/IP Port

Built-in Serial Port (Only CJ2M-CPU1@)

* Baud rates for the RS-232C are specified only up to 19.2 kbps. The CJ Series supports serial communications from 38.4 kbps to 115.2 kbps,

but some computers cannot support these speeds. Lower the baud rate if necessary.

Note: Do not use the 5-V power from pin 6 of the RS-232C port for anything but CJ1W-CIF11 RS-422A Conversion Adapter, NT-AL001 RS-232C/

RS-422A Conversion Adapter and NV3W-M_20L(-V1) Programmable Terminal. The external device or the CPU Unit may be damaged.

Item Specification

Baud Rate 12 Mbps max.

Transmission Distance 5 m max.

Interface USB 2.0-compliant B-type connector

Protocol Peripheral Bus

Item Specification

Media Access Method CSMA/CD

Modulation Baseband

Transmission Paths Star

Baud Rate 100 Mbps (100Base-TX)

Transmission Media Shielded twisted-pair (STP) cable; Categories: 5, 5e

Transmission Distance 100 m (between ethernet switch and node)

Number of Cascade Connections No restrictions if ethernet switch is used.

Communications

CIP Communications (tag data links, Explicit Messages).

FINS communications

Item Specification

Communications method Half duplex

Synchronization Start-stop

Baud rate 0.3/0.6/1.2/2.4/4.8/9.6/19.2/38.4/57.6/115.2 kbps *

Transmission distance 15 m max.

Interface EIA RS-232C

Protocol Host Link, NT Link, 1:N, No-protocol, or Peripheral Bus

Pin No. Signal Name Direction

1 FG Protection earth −

2 SD (TXD) Send data Output

3 RD (RXD) Receive data Input

4 RS (RTS) Request to send Output

5 CS (CTS) Clear to send Input

6 5 V Power supply −

7 DR (DSR) Data set ready Input

8 ER (DTR) Data terminal ready Output

9 SG (0 V) Signal ground −

Connector hood FG Protection earth −