Instructions

UM-0085-B09 DT80 Range User Manual Page 247
RG
PROFILE HOST_PORT
[HOST_PORT]
BPS = 57600
DATA_BITS = 8
STOP_BITS = 1
PARITY = NONE
*FLOW = HARDWARE
FUNCTION = COMMAND
In order for the port to support PPP, the
FUNCTION parameter must be set to COMMAND or PPP:
• The COMMAND setting (which is the default for USB and host RS232 ports) means that the port supports both
the regular command interface and PPP, automatically switching between the two when a PPP connection is
established and disconnected.
• The PPP setting only allows PPP connections on the port. This provides improved security, especially on
modem links, as a valid username and password must be supplied before a PPP connection can be
established.
For the host and serial sensor RS232 ports, the flow control should be set to HARDWARE (RTS/CTS). Software flow
control is not recommended
for PPP.
For RS232 ports, also make a note of the baud rate and framing settings – these will be needed when setting up the host
PC end of the connection.
2. Install the Physical Communications Link
The physical communications link over which PPP is to be run should now be installed. This link might be
• a null modem (cross-over) RS232 cable, connected between the DT80 host RS232 or serial sensor port and a
PC RS232 port (or USB to RS232 adapter). For the serial sensor port, RS422/485 may also be used, with an
appropriate adapter at the PC end
• a modem (dial-up, radio, cellular), connected to the DT80 host RS232 port, with another internal or external
modem connected to the host computer
You now need to determine the PC COM port. This can be done by attempting to establish a standard command
interface connection, using DeTransfer. (Note that this will not work if the DT80 port function has been be set to
PPP.
Set it to
COMMAND for this test.)
Once you have verified that a connection can be established, be sure to close the connection in DeTransfer. Make a
note of the COM port number.
3. Install the Windows Modem Device
It is now necessary to set up the "modem device" that Windows will use for communicating over this link. This is done as
follows. Be sure that the cable or modem is plugged in to the host computer before proceeding.
Note: When using Windows Vista, note that at various points during this process you may see "Windows needs your permission"
messages. Click Continue in each case.
1. Open the Windows Control Panel.
2. Open the Phone and Modems Options item. This may be listed under the Printers and Other Hardware (XP)
or Hardware and Sound (Vista) category.
3. If the Dialling Rules dialog is displayed, ensure that a valid area code is entered.
4. Once the area code has been set, select the Modems tab: