Vaisala DMT346 - Manual (Page 138)

User's Guide _______________________________________________________________________
138 __________________________________________________________________ M210762EN-G
Taking Modbus into Use
To take the Modbus protocol into use on the transmitter, you must
perform some configuration tasks using the built-in display and keypad
(optional) or a PC connected to the serial line. For example, you can
connect to the service port using the USB service cable (Vaisala order
code: 219685). The transmitter must be powered from a suitable power
supply during configuration.
Instructions for performing the configuration are provided in the
following sections:
- Enabling Serial Modbus on page 139
- Enabling Ethernet Modbus on page 140
After configuring the transmitter, perform the transmitter installation and
wiring according to the instructions in Chapter 3, Installation, on page
25.
The configuration instructions assume you are familiar with the use of
the transmitter. Additional details on the display/keypad, service port use,
and serial commands are available in other sections of this manual:
- The use of the display/keypad option is described in section
Display/Keypad on page 64.
- If this is the first time you are using the USB service cable, you can
find detailed instructions in section Service Port Connection on page
78. You must install the required driver before using the service cable.
- Configuration of the LAN and WLAN interfaces is decribed in section
LAN Communication on page 80.
- The serial commands available through the service port are described
beginning from section List of Serial Commands on page 90.