Rs-232C Serial Interface / External Input - A&D GF-1200 Instruction Manual

16. RS-232C SERIAL INTERFACE / EXTERNAL INPUT

Transmission system
Transmission form
Data format
Pin connections
Pin No.
1
2
3
4
5
6
7
18
19
8 – 25 (Excluding 18 and
19)
Circuits
: EIA RS-232C
: Asynchronous, bi-directional, half duplex
: Baud rate : 600, 1200, 2400, 4800, 9600 bps
Data bits : 7 or 8 bits
Parity : Even, Odd
None
Stop bit : 1 bit
Code : ASCII
Signal name Direction Description
FG
RXD Input
TXD Output
RTS Input
CTS Output
DSR Output
SG
PRINT Input
RE-ZERO Input
-
57
(Data bits 7 bits)
(Data bits 8 bits)
- Frame ground
Receive data
Transmit data
Ready to send
Clear to send
Data set ready
- Signal ground
Same as the PRINT key
Same as the RE-ZERO key
- Not connected