Samsung SRP-350EG Operation Manual - Page 31
Interface Connector
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Interface Connector Serial Interface(RS-232) Pin No. 1 2 3 6 7 20 Signal name FG TxD RxD DSR SG DTR Direction Function Output Input Input Output Frame Ground Transmit Data Receive Data Data Set Ready Signal Ground Data Terminal Ready Serial Interface(RS-485) Pin No. Signal Name 1 FGND 2 SD2 3 SD1 4 RD2 5 RD1 7 SGND 8 DR2 9 DR1 10 CS2 11 CS1 Direction Output Output Input Input - Output Input Function Frame Ground Send Data Receive Data Signal Ground Same as DTR(RS-232) Same as DSR(RS-232) 31
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31
Interface Connector
Serial Interface(RS-232)
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 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
CS2
CS1
Input
Same as DSR(RS-232)