11-11
11 Programming Devices and Communications
CJ2 CPU Unit Software User’s Manual
11-1 Accessing a PLC from the CX-
Programmer
11
11-1-4 Automatic Online Connection
If the project for the target PLC is not available at the personal computer, it is possible to connect online
to upload the programs from the PLC.
When an automatic online connection is executed, a search is automatically performed for a usable per-
sonal computer serial port. When an applicable serial port is found the CX-Programmer is connected
automatically to the PLC connected to the serial port.
1 Select Auto Online − Direct Online from the PLC Menu. The Direct Online Dialog Box will be
displayed as shown below.
2 Select either of the following methods for connecting the personal computer to the PLC.
• Serial connection (including converting a USB connection at the personal computer to an RS-
232C connecting at the PLC)
• USB connection
When connected to the peripheral USB port of the CJ2 CPU Unit from the USB port of the per-
sonal computer, select the USB connection and click the Connect Button. The following dialog
box will be displayed.
To have the program, PLC Setup, and I/O tables uploaded to the personal computer after auto-
matically connecting online, click the Yes Button. The CX-Programmer will be automatically con-
nected to the PLC, and these items will be uploaded from the PLC.
11-1-4 Automatic Online Connection
Direct Serial Connection
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