RS-232C Cable Connection
RS-485 Cable Connection
54
Interface Connector
Serial Interface (RS-232)
Pin No.
Signal name
Direction
1
FG
-
2
TxD
Output
3
RxD
Input
4
RTS
Output
5
CTS
Input
6
DSR
Input
7
SG
-
20
DTR
Output
Serial Interface (RS-485)
Pin No.
Signal Name
Direction
1
FGND
-
2
SD2
Output
3
SD1
Output
4
RD2
Input
5
RD1
Input
7
SGND
-
8
DR2
Output
9
DR1
10
CS2
Input
11
CS1
55
Function
Frame Ground
Transmit Data
Receive Data
Ready To Send
Clear To Send
Data Set Ready
Signal Ground
Data Terminal Ready
Function
Frame Ground
Send Data
Receive Data
Signal Ground
Same as DTR(RS-232)
Same as DSR(RS-232)