- GLOBAL > PLC > SPH > Support tool > I have connected the SX series CPU and the loader PC via USB. I have installed the USB driver and configured the communication settings, but commun...
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I have connected the SX series CPU and the loader PC via USB. I have installed the USB driver and configured the communication settings, but communication fails. Why?
I have connected the SX series CPU and the loader PC via USB. I have installed the USB driver and configured the communication settings, but communication fails. Why?
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Answer
There are two ways to connect a USB port of a personal computer and a CPU:
1) Connect to the USB port of the CPU (directly connected to the USB cable).
2) Connect to the loader (RS422) port of the CPU (use a USB-RS-422 converter (NP4H-CVU) and
1) Connect to the USB port of the CPU (directly connected to the USB cable).
2) Connect to the loader (RS422) port of the CPU (use a USB-RS-422 converter (NP4H-CVU) and
a loader cable (NW0H-CA3) in combination).
The necessary USB driver and communication settings are different between 1) and 2).
・USB driver
For 1), install “USB driver For MICREX-SX.”
For 2), install “Driver of Fuji UsbToSerial Converter.”
・Communication setting
For 1), select “USB.”
For 2), select “COM.” (Check the COM No. using Device Manager.)
* After installing the USB driver, you may need to restart your computer. If communication fails even after installing the USB driver and configuring the communication settings, restart your computer.