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Ordering Information
Serial Communications Units
Serial Communications Units
Note: 1. The Serial Gateway function is enabled only for Serial Communications Units of unit version 1.2 and later.
2. The no-protocol function is enabled only for Serial Communications Units of unit version 1.2 and later (and a CPU Unit of unit version 3.0
or later is also required).
3. The Modbus-STU Slave function is enabled only for Serial Communications Units of unit version 1.3 and later.
4. When an NT-AL001 RS-232C/RS-422A Conversion Unit is used, this value increases by 0.15 A/Unit. When a CJ1W-CIF11 RS-422A
Conversion Unit is used, it increases by 0.04 A/Unit.
Ethernet Unit
FL-net Unit
Unit
classi-
fica-
tion
Product name Specifications No. of unit
numbers
allocated
Current con-
sumption (A)
Model Standards
Communications
interface
Communications
functions
5 V 24 V
CJ1
CPU
Bus
Units
Serial Commu-
nications Units
1 RS-232C port and
1 RS-422A/485 port
The following functions
can be selected for each
port:
• Protocol macro
• Host Link
• NT Links (1:N mode)
• Serial Gateway
(See note 1.)
• No-protocol
(See note 2.)
• Modbus-RTU Slave
(See note 3.)
10.38
(See
note
4.)
--- CJ1W-SCU41-V1 UC1, N, L,
CE
2 RS-232C ports 0.28
(See
note
4.)
CJ1W-SCU21-V1
2 RS-422A/485
ports
0.38 CJ1W-SCU31-V1
Unit
classi-
fica-
tion
Product
name
Specifications No. of
unit
num-
bers
allo-
cated
Current con-
sumption (A)
Model Standards
Communi-
cations
cable
Communications
functions
Max. Units
mount-
able per
CPU Unit
5 V 24 V
CJ1
CPU
Bus
Unit
Ethernet
Unit
100Base-TX FINS communications service
(TCP/IP, UDP/IP), FTP server
functions, socket services, mail
transmission service, mail recep-
tion (remote command receive),
automatic adjustment of PLC
built-in clock, server/host name
specifications
4 1 0.37 --- CJ1W-ETN21 UC1, N, L,
CE
Unit
classi-
fica-
tion
Product
name
Specifications No. of
unit
num-
bers
allo-
cated
Current
consump-
tion (A)
Model Standards
Communi-
cations
interface
Communications
functions
Max. Units
mountable per
CPU Units
5 V 24 V
CJ1
CPU
Bus
Units
FL-net Unit 100Base-TX With FL-net Ver. 2.0 spec-
ifications (OPCN-2),
Data links and message
service
4 1 0.37 --- CJ1W-FLN22 UC1, CE