User's Guide ______________________________________________________________________
144 _________________________________________________________________ M210566EN-J
7. On
the
Communication Protocol
screen, enable the MODBUS
protocol. Press the
EXIT
button to save the changes.
Note that the device address setting is not relevant for MODBUS
TCP. In the MODBUS mode, the transmitter will respond to all
valid MODBUS messages with any “unit identifier” value.
1101-034
Figure 73
Communication Protocol
8.
The MODBUS configuration is now complete, as configuration
changes made with the display and keypad are effective
immediately.
Using Serial Line
1.
Open the transmitter cover.
2.
Connect power supply wiring (if not using the power supply
module) and power up the transmitter.
3.
Connect the USB service cable between a computer and the service
port of the transmitter.
4.
Start the Vaisala USB Instrument Finder program (which has been
installed on the computer along with the USB service cable driver),
and check the COM port that the cable is using.
5.
Open a terminal program, and connect to the service port. The
fixed settings serial line settings of the service port are
19200, 8, 1, N.
6. Use
the
SMODE
command to enable the MODBUS mode:
>
smode modbus
serial mode : MODBUS
>
7.
Configure the networking parameters of the interface you are
using:
NOTE
After transmitter startup, it may take a few minutes for the network
interface to become available for configuration.
