USER'S GUIDE____________________________________________________________________
56 __________________________________________________________________ M210762EN-D
0605-035
Figure 35
4-Wire RS-485 Bus Connections, Part B
Table 8
2-Wire (Switch 3:Off)
RS-485 master
Data
DMT346
A
↔
A
B
↔
B
8.
When operating in communication mode RS-422, set both switches
3 and 4 to ON position (4-wire wiring is required for RS-422
mode).
9.
Connect the power and close the cover.
LAN Interface
The optional LAN interface enables an Ethernet connection to the
transmitter. The user can establish a virtual terminal session using a
telnet client program such as PuTTY. When the LAN Interface is in use,
serial communication using the User Port is disabled.
The LAN interface module must be installed at the factory (when
ordering the transmitter), or by a Vaisala Service Center. Once installed,
the module is automatically used by the transmitter. The physical
connection to the network is made to the RJ45 connector on the LAN
interface module, using a standard twisted pair Ethernet cable