4 Support Software
4-8
CJ2 CPU Unit Hardware User’s Manual
Use the following cable to connect the CJ2 CPU Unit to the computer running the Support Software.
Precautions for Safe Use
• When the above cable connector is connected to the PLC serial port (RS-232C), be sure to
discharge static electricity by touching grounded metal before touching the cable connector.
The XW2Z-@@@S-CV Cable is particularly resistant to static electricity because it uses a
static-resistant connector hood (XM2S-0911-E). Even when this Cable is used, however, be
sure to discharge static electricity before touching the connector.
• Use the specialized cable described above for connecting cable. Using ordinary commercially
available RS-232C cable for personal computers may result in damage to external devices and
the CPU Unit.
Additional Information
It is possible to create RS-232C cable for connecting to the serial port (RS-232C). The connec-
tors shown in the following table are included with the CJ2 CPU Unit as standard equipment for
creating cables. For details on creating cables, refer to A-4 Connecting to a Serial Port on the
CPU Unit.
Select the protocol for communications between the PLC and the CX-Programmer. For a SYSMAC
WAY (Host Link) connection, turn OFF pin 5 of the DIP switch on the front panel. For a peripheral bus
connection (faster than SYSMAC WAY), turn ON pin 5.
The method for connecting the PLC to the personal computer is set using the CX-Programmer. For
details on using the CX-Programmer to set the connection method, refer to the CJ2 CPU Unit Software
User’s Manual (Cat. No. W473).
Connecting Cable
Port at Unit
Port at
computer
Network type
(communications
mode)
Model Length Remarks
Serial port
(RS-232C)
(D-sub, 9-pin,
female)
D-sub,
9-pin, male
Serial communications XW2Z-200S-CV 2 m Use a static-resis-
tant connector.
XW2Z-500S-CV 5 m
Name Model Specifications
Plug XM2A-0901 9-pin, male Use in combination. (One of
each is provided as standard
equipment with the CPU Unit.)
Hood XM2S-0911-E 9-pin static-resistant connector
with millimeter screws
Setting the Communications Protocol
CX-Programmer Settings
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