MiDaTek FAQ page for ICE and DDEdrive

Communication errors, troubleshooting

How to detect communication errors and troubleshooting. This is common to both DDEdrive and ICE

On the bottom status line in ICE and DDEdrive the communication status is displayed.
	Reading from the PLC
	Read was successful. Waiting for the next read from the PLC
	Error in communication to the PLC If you get the message Tag error, you have deleted a tag from the tag database, that is in use in one of the open HMI windows.
If you have problems connecting to the PLC please follow this procedure:
Connect your PLC programming software to the PLC and make sure that the connection works. Also note the communication parameters.
When this works, note the communication parameters of the serial port and close the application
Start ICE or DDEdrive and recheck the setup of serial port and that the correct driver is selected.
If you still experience communications errors...

	Disconnect the communication
	Open the Communication setup
	Select the PLC driver you are using, from the list of drivers and check the Error logging checkbox to enable error logging for that driver. Errors will now be logged to a file. Click the OK button.
Connect the communication from the File menu and wait half a minute. Disconnect the communication and from the File menu and select Communication setup.
	Select the Error log tab and view what kind of communication errors that is present. This might help you detecting what is wrong.