CJ1W-CLK

5

Mountable Racks

Note: 1. A CP1W-EXT01 CJ Unit Adaptor is required.

2. One NSJW-CLK21-V1 can be mounted to the NSJ Controller.

3. If an Expansion Rack is used, the NSJW-CLK21-V1 cannot be mounted to the NSJ Controller.

Communications Specifications

Note: 1. With wired models, the maximum number of nodes is 32 if Repeater Units are not used. A Repeater Unit is required when building a

network with more than 32 nodes. If a Repeater Unit is used, be sure to use only the following Controller Link Units or Boards and set

the Wired Network 62 Node Enable Bit in the DM Parameter Area software switches at all nodes.

CS1W-CLK23/CLK21-V1

CJ1W-CLK23/CLK21-V1

3G8F7-CLK23-E/CLK21-EV1

2. CX-Net in CX-Programmer version 3.1 or earlier can be used only in a system with a maximum of 32 nodes (node address 1 to 32). If a

system is to be used with a maximum of 62 nodes (node addresses 1 to 62), use CX-Net in CX-Programmer version 3.2 or higher or the

CX-Integrator.

3. CJ-series PLCs do not have a Link Area, but LR000 to LR199 are automatically converted CIO 1000 to CIO 1199.

Model

CJ1 System

CP1H System

NSJ System

CPU Rack

Expansion

Backplane

CP1H PLC

NSJ Controller

Expansion

Backplane

CJ1W-CLK23

Unit version 2.0

8 Units (per CPU Unit)

2 Units

(See note 1.)

Not supported

(See note 2.)

8 Units

(See note 3.)

CJ1W-CLK21-V1

Unit version 1.2

Items

Specifications

Model

CJ1W-CLK23

3G8F7-CLK23-E

CJ1W-CLK21-V1

3G8F7-CLK21-EV1

Type

Wired (shielded twisted-pair cable)

Communications method

N:N token-bus method

Code

Manchester code

Modulation

Baseband code

Synchronization

Flag synchronization (conforms to HDLC frames)

Transmission path format Multidrop method (bus type)

Transmission speed

The following are the maximum transmission distances depending on the transmission speed.

2 Mbits/s: 500 m

1 Mbits/s: 800 m

500 kbits/s: 1 km

Maximum transmission

distance

Maximum distance

between nodes

Not specified. (Maximum transmission distance must be satisfied for the entire system.)

Medium

Specified shielded twist-pair cable

Two signal wires, one shield

Node connection method

PLC: Connection to terminal block

Computer: Connection using special (supplied) connector

Maximum number of

nodes

32 or 62 nodes (See note 1 and 2.)

Applicable Programming

Devices

CX-Integrator in CX-One, CX-Net in CX-Programmer (See note 2.), and Programming Console

Communications

functions

Data links and message service

Number of data link words

Send words per node: 4,000 words max. (CJ1W-CLK

@3), 1,000 words max. (All other Units)

Number of send/receive words per node: 12,000 words max. (Pre-Ver. 1.2)

20,000 words max. (unit Ver. 1.2 or later)

Total number of send words per network: 62,000 words max.

Data link areas

PLC: Bit areas (CIO Area, Work Area, Link Area (See note 3.)), Data Memory (DM), Extended DM Area (EM)

Computer: FinsGateway event memory

Message length

2,012 bytes max. (including the header)

RAS functions

• Polling node backup function

• Self-diagnosis function (hardware checking at startup)

• Echoback test and broadcast test (using the FINS command)

• Watchdog timer

• Error log function

Error control

Manchester code check