Samsung SRP-270 Series Manual De Usuario
30
Interface Connector
Serial Interface(RS-232C)
Pin No. Signal name Direction Function
1
FG
-
Frame Ground
2
TxD
Output
Transmit Data
3
RxD
Input
Receive Data
6
DSR
Input
Data Set Ready
7
SG
-
Signal Ground
20
DTR
Output
Data Terminal Ready
Serial Communication Interface(Example)
Printer Host(DTE ex 8251)
SG SG
TXD TXD
RSD RSD
DSR RTS
DTR CTS
DSR
DTR
S.G S.G
SG SG
TXD TXD
RSD RSD
DSR RTS
DTR CTS
DSR
DTR
S.G S.G
Serial Interface(RS-485)
Pin No. Signal Name Direction Function
1
FGND
-
Frame Ground
2
SD2
Output
3
SD1
Output
Send Data
4
RD2
Input
5
RD1
Input
Receive Data
7
SGND
-
Signal Ground
8
9
DR2
DR1
Output
Same as DTR(RS-232)
10
11
11
CS2
CS1
CS1
Input
Same as DSR(RS-232)