The Port field enables you to select the serial port tag or TCP/IP tag you wish to be associated with this driver tag.

In order to connect to MDS radio port with VTS, you can use one of several different hardware solutions:

•    Serial port cable connected directly.

For this case, configure and select a serial port tag.

•    Stand alone serial modem connected to the serial port on the radio.

 VTS has its own modem that is used to dial up the modem connected to the radio. For this option, configure and select a serial port that is using a modem.

•    Ethernet terminal server connected to the serial port on the radio.

VTS is connected to the same network as the terminal server and can connect to it with either a TCP/IP or UDP/IP port tag

Any type of VTS port tag may be used, but it must match the hardware connection to the radio.

The Time-Out Limit field indicates the time in seconds or fractions of a second that this driver should wait for a reply from the remote unit.

The Retries spin box enables you to select the number of attempts that will be made by this driver if there is no reply to a message. An error will be declared after this number has been reached.

Indicates that messages should be sent out in active mode, rather than passive mode.

If the Actively Retrieve Values checkbox is selected, messages will be sent out in active mode (i.e. a request for data from the MDS radio will be immediately sent).

If the Actively Retrieve Values checkbox is not selected (default), the data will be sent out in passive mode (i.e. a request for data from the MDS radio will be held until another request for data from the associated RTU or PLC is made).