A&D GR Series GR-300 - Manual (Page 55)

14. RS-232C Specifications
Transmission system
Transmission form
Data format
EiA RS-232C
Asynchronous, bi-directional, half duplex
Baud rate : 600, 1200, 2400, 4800, 9600 bps
Data : 7 or 8 bits
Parity : Even, Odd (7 bits)
None (8 bits)
Stop bit : 1 bit
Code : ASCII
LSB
0 1 2 3 4 5 61
Start bit
Data bits
t
Stop bit
Parity bit
RS-232C
1 -5 V ~ -15 V
0 +5 V ~+15 V
Pin connections
Pin No. Signal name Direction Description
1 FG
-
Frame ground
2 RXD Input Receive data
3 TXD Output Transmit data
4 RTS Input Ready to send
5 CTS Output Clear to send
6 DSR Output Data set ready
7 GND Signal ground
8 - 25 N.C.
- -
Circuits
EG
14, RS-232C Specifications Page 54
Serial Interface