GIC Lynx - Serial Interface Connection

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2.1. Serial Interface Connections
There are two serial ports provided on the device for communication:
Port 1 & Port 2.
Port 1 (RS232/RS422/RS485):
Port1 is used to connect Master/ Slave devices at serial side. The serial device interface can
be RS-232, RS-485 & RS-422 and the connections are screw terminals. The following
section along with the diagrams describes in detail the practical methods for connecting
devices at the serial end for the RS-232 & RS 422/485 Serial interface.
Serial Interface Signals for Port 1:
Signal
Direction
Primary Function
TXD
Out
Transmit Data for RS232
RXD
In
Receive Data for RS232
GND
NA
Ground for RS232
TX+/D+
Out
Differential Transmit Data(+) for RS422/RS485
TX-/D-
Out
Differential Transmit Data(-) for RS422/RS485
RX+
In
Differential Receive Data(+) for RS422
RX-
In
Differential Receive Data(-) for RS422
COM
NA
Ground for RS422/RS485
Port 2 (RJ11):
This is an optional port for debugging. RJ11 port is provided for the RS232 connections.
Serial Interface Signals for Port 2:
Pin No
Signal Name
DIR
Primary Function
1
NC
-
-
2
RXD
In
Receive Data for RS232
3
TXD
Out
Transmit Data for RS232
4
NC
-
-
5
GND
GND
Ground for RS232
6
NC
-
-
Tx+ Tx- Rx+ Rx- COM
TXD RXD GND
RS 232
RS 485/422
PORT 1