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)