Omron CJ2 User Manual page 115

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 the RS-232C Serial
Port on the CPU Unit.
Name
Plug
Hood
Setting the Communications Protocol
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.
CX-Programmer Settings
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).
CJ2 CPU Unit Hardware User's Manual
Model
XM2A-0901 9-pin, male
XM2S-0911-E 9-pin static-resistant connector
with millimeter screws
4 Support Software
Specifications
Use in combination. (One of
each is provided as standard
equipment with the CPU Unit.)
4
4-9