Table of Contents
Advertisement
Serial interface
connector pin
assignment
10
Serial interface 1, RS 232/Current loop connector:
Pin
Direction
2
out
3
in
4
out
5
in
6
in
7
-
8
in
20
out
9
-
10
-
11
-
12
-
13
-
14
-
Serial interface 2, RS 485 connectors:
Pin
Name
1
DATA A, Data signal pair, signal A
2
DATA B, Data signal pair, signal B
3
RTS A, Request to send signal pair, signal A
4
RTS B, Request to send signal pair, signal B
7
GND, Power supply for optical bus connection module.
8
9
+8V, Power supply for optical bus connection module.
Serial interface 4, RS 232/Current loop connector:
Pin
Direction
2
out
3
in
4
out
5
in
7
-
8
in
20
out
9
-
10
-
11
-
12
-
13
-
14
-
Name
TXD, Transmit data
RXD, Receive data
RTS, Request to send
CTS, Clear to send
DSR, Data set ready
GND, Signal ground
DCD, Data carrier detect
DTR, Data terminal ready
TX+, Current loop, transmit data +
TX-, Current loop, transmit data -
RX+, Current loop, receive data +
RX-, Current loop, receive data -
Ready+, Current loop, Ready (DCD) +
Ready-, Current loop, Ready (DCD) -
Name
TXD, Transmit data
RXD, Receive data
RTS, Request to send
CTS, Clear to send
GND, Signal ground
DCD, Data carrier detect
DTR, Data terminal ready
TX+, Current loop, transmit data +
TX-, Current loop, transmit data -
RX+, Current loop, receive data +
RX-, Current loop, receive data -
Ready+, Current loop, Ready (DCD) +
Ready-, Current loop, Ready (DCD) -
Advertisement
Table of Contents
