User Manual
Arctic Substation Gateway
Firmware Version 2.4.x
15
Document Version 1
Pin
Function
8
CTS
9
RI
DIP switch configuration for serial port 1 is described in table 12. By default all
are set to "0" position (RS-232 mode). DIP switches 2-4 apply only when port
is set in RS-485 mode (DIP switch 1 on "1" position).
Table 12: Serial port 1 DIP switches
Number Function
State
Explanation
1
RS-232 /
RS-485
0 = RS-232, 1 = RS-485
Selects serial port operation
mode
2
FULL / HALF
0 = FULL, 1 = HALF
Selects between half ( 2-
wire) and full duplex (4-wire)
3
BIAS
0 = OFF, 1 = ON
RS-485 biasing
4
TERMINATION 0 = OFF, 1 = ON
RS-485 termination
Serial port pinouts in RS-422 and RS-485 modes are described in the table
below.
2.5.3
Serial port 2
Table 13: Serial port 2
Figure 6. Connector diagram
Table 14:
Connector pinout
Pin
Function
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Table 15: Serial port
configuration
Baud rate
115 -
230400
Data bits
8
Parity
No parity
Stop bits
1
Flow
control
No flow
control
Serial port 2 supports only RS-232 data mode.