3.6.1. Edit Interface

Packet Type. The default packet type is TCP (since Socket is the default interface). You would normally select RTU if you are using a serial interface, and TCP if you are using a socket interface. You may have to use ASCII for some legacy serial interfaces or devices. It is possible to use RTU or ASCII packets over a socket interface - this is non-standard, but can be useful for software testing. It is also possible to use TCP packets over a serial interface, but there is no good reason to do so (and there would be no error-checking of the packets).

Interface Type. The Socket interface is the default selection and the settings panel for the socket interface is displayed beneath it (i.e. the Host and Port fields). Selecting a different interface changes the panel beneath. Select Serial for a RS232/485 serial interface. If the selection of a new interface type is the only change, remember to press Apply.

Press Apply to apply the changes.