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Rs-232c specifications – A&D GR Series GR-300 User Manual

Page 55

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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

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