Why does the Web-IO with serial Com-Server functionality not output any data on the serial interface?

Why does the Web-IO with serial Com-Server functionality not output any data on the serial interface?

All Web-IOs with serial Com-Server functionality use hardware handshake as the standard. Here data are only sent to the serial terminal device if the CTS control input has an enable level. If it is unclear which handshake procedure is supported by the terminal device or connection cable, you should first set the Com-Server to “No Handshake”. In this mode the port signals send enable on all outputs, and all data are sent regardless of the level of the control inputs.

Additional information:

• Product Info for Web-IO
• Manual for Web-IO

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