This function sends a multi-point host link command string specified in the x$ via serial port #ch to another F-Series, M-series or H-series PLC. It will then wait for a specified amount of time for a response string from the other PLC and this response string is then returned.

Note:
1) If the target PLC does not respond then this function returns an empty string.

2) This function checks the FCS of the response string, and if the FCS is wrong it indicates an error in the serial reception and it will return an empty string.

Special : If the last character of x$ is a "~" character, NETCMD$ will send out the string without the ‘~’ character, followed by a Carriage Return (&H0D). It will not append the FCS and ‘*’ to the outgoing string, it will also NOT check the response string for FCS. This allow NETCMD$ to be used to interface to third-party ASCII devices with different command/response formats. E.g. A$ = NETCMD$(3, "Hello World~"). The string "Hello World" will be sent out of serial COMM port #3. A$ will receive the full returned string without applying any FCS check on the return string.