Mettler Toledo IND246 Guide D'installation page 50

2.4.5.1. Ethernet Connections
The Ethernet option board (Figure 2-57) is positioned in position 2 on the Main board. This port
provides a 10 Base-T connection (10 Mb) connection for Ethernet. The Ethernet connection is made
via a standard RJ45 connector (indicated in Figure 2-57) on the option board.
2.4.5.2. COM2 Connections
The COM2 option board (Figure 2-58) is positioned in option position 1 on the Main board. This
option board provides a single serial port labeled COM2.
The COM2 port provides RS-232 and RS-485 connections. There is a setup parameter that must be
selected to match the hardware connection used. This parameter controls how the transmit and
receive lines are controlled. See Figure 2-23 and Figure 2-60 for connection details.
2-30 METTLER TOLEDO IND246 and IND246 POWERCELL Installation Manual
Figure 2-57: Ethernet Connection Option Board
Important: When installing the Ethernet option, adhere the Ethernet label from the kit to the
enclosure near the Ethernet connector.
Figure 2-58: COM2 Option Board
Terminal
TxD Transmit RS-232
RxD
Gnd
RS-485 A
RS-485-B
Figure 2-59: COM2 Port Signals
RJ45
connector
Signal
Receive RS-232
Logic Ground
RS-485 data A
RS-485 data B
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