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The Arctic has rails to enable wall or rack mounting. The front panel contains slots for nuts or other
mounting accessories (optional) in order to gain access to these rails.
Power Supply Connector
The Arctic has a 6 – 26 VDC power supply connector shown below:
Pin 1 is positive (+)
Pin 2 is negative (–)
1
2
The unit is protected against reversed polarity.
Power Switch
Enables or disables the operation of the Arctic.
Console Enable Switch
Enables or disables console access. When it is disabled, both serial ports may be used as an
application serial port. When the switch is in the right position, RS1 is in serial port mode and when in
the left position, RS1 is in console mode.
DIP Switches
Selects application port (RS-2) mode and settings (RS-232 or RS-485). By default all are set to "0"
when the port is acting as an RS-232. DIP switches 2-4 apply only when RS-485 mode is selected by
DIP switch 1.
Number
Function
1
RS-232/RS-485
2
HALF/FULL
3
BIAS
4
TERMINATION
Serial Ports (RS-232, RS-422/485 -connectors)
Arctic has two serial port connectors. These are 9-pin male connectors (DB9). A null modem cable
may be used to connect the Arctic to a serial device or a PC. The Arctic supports CTS/RTS flow
control. The figure of Arctic's DB9 (DTE) Male connector is shown below:
1
5
9
6
The serial port 1 is a full RS-232 -port. The pin description of this port is as follows:
Arctic IEC-104 Gateway
State
"0" = RS-232,
"1" = RS-485
"0" = half
"1" = full
"0" = OFF
"1" = ON
"0" = OFF
"1" = ON
11
Explanation
Selects RS-port operation
Selects between half-duplex (2-
wire) and full-duplex (4-wire)
RS-485 biasing
RS-485 termination
Viola Systems Ltd.
User's Manual
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