The COM2 port is galvanically isolated for both RS-232 and RS-485, to provide surge voltage
protection.
The RS-485 connection can be used as an RS-422 transmit only when sending continuous output
to a scoreboard or remote display.
1.10.2.
Discrete I/O
The discrete I/O interface option provides dry-contact relay outputs. The relay contacts will switch up
to 30 volts DC or 250 volts AC at 1A.
The inputs are switch selectable as either active (for simple pushbutton control) or passive (for
connection to devices that supply their own power for the inputs).
1.10.3.
USB
The USB port provided is a hardware bridge acting as a virtual COM port, and is used for
conversion of serial data. The port is bidirectional and can be configured for various functions such
as demand output, continuous output, extended continuous output, SICS host communications or
ASCII command input (C, T, P, Z).
1.10.4.
Ethernet
The IND246 Ethernet option provides an RJ45 jack for connection to an Ethernet network or host
device. A TCP socket connection can be made to port 1701 to transfer files or to exchange data
with a PC. This port can also operate as a print client to send data to a network printer.
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The Discrete I/O option is supported only in the analog version of the IND246.
METTLER TOLEDO IND246 and IND246 POWERCELL Installation Manual
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