Vaisala MMT330 - Manual (Page 61)

Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 61
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 or by using Modbus TCP protocol.
When the LAN interface is in use, serial communication using the RS-
232 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
(10/100Base-T). Transmitters with the optional LAN interface are
delivered pre-installed with a suitable cable and cable gland.
The LAN interface can use both static and dynamic network settings. If
the interface is configured to use dynamic settings, the network where the
LAN interface is connected must have a DHCP server that provides the
settings.
The network configuration can be done using the optional display and
keypad, or by using the service port. For instructions, see section LAN
Communication on page 81. The LAN interface also provides a web
configuration interface, which you can access by entering the IP address
of the LAN interface in the address field of a web browser. See section
Web Configuration for LAN and WLAN on page 88.
CAUTION The LAN interface is designed to be used in trusted network
environments (trusted corporate LAN or VPN-based connection over
internet). Avoid connecting the transmitter directly to a public network
because the device can be attacked by a malicious user through the
network.
1 = Flat cable connector
2 = RJ45 connector with
indicator LEDs for
link and activity
0709-003
Figure 36 LAN Interface Module