4.3Serial RS-232/422 Communication
All SPiiPlus motion control products include two serial communication channels (COM):❑RS-232
❑RS-422
The default settings of RS-232 and RS-422 are: 8 data bits, no parity and a regurlar stop bit.
1.Open MMI ♑ Communication and select Serial.
Figure 7SPiiPlus MMI Communication Dialog - Serial
2.Specify the host computer serial Port (COM1, COM2, etc.) that is connected to the
controller.
3.The Rate of the host port, which is set here, must match that of the controller port to which
it is connected. Normally, this can be done by selecting Auto, which automatically detects the controller rate. (The controller rate can be accessed in MMI ♑ Configurator♑
Communication Parameters.)
4.Click Connect to establish the communication channel with the SPiiPlus serial port.
5.Click Close to exit the Communication dialog box.
4.3.1Troubleshooting a Serial Connection
❑Inspect the cable and connectors.
❑If a communication error message appears right after you click Connect, check that the COM port on the PC host is not being used by another application.
❑Check that the communication port specified in the Port field corresponds to the COM port on the PC host that the cable is connected to.
❑Older computers: try a lower baud rate.。