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Rs-232c serial interface, 1. rs-232c specifications – Rice Lake FC-i/Si Series, A&D Weighing User Manual

Page 48

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12. RS-232C SERIAL INTERFACE

‰ The scale has not only a standard RS-232C interface but also optional interfaces, Ch.1

and Ch.2.

‰ The specifications described in this section are common to all of the RS-232C interfaces.

12-1. RS-232C Specifications

Transmission system

EIA RS-232C

Transmission form

Asynchronous, bi-directional, half-duplex

Data format

Baud rate:

2400, 4800, 9600 bps

Data:

7 bits + parity 1bit (even or odd)

or 8 bits (non-parity)

Start bit:

1 bit

Stop bit:

1 bit

Code:

ASCII

Terminator:

Data Send / C

R

L

F

(C

R

: 0Dh, L

F

: 0Ah)

Data Receive / C

R

or C

R

L

F

LSB

0

1

2

3

4

5

MSB

6

1 (-15V~-5V)
0 (5V~15V)

Stop bit
Parity bit
Data bit
Start bit

Pin connections

D-sub 9pin male connector

1 N.C.

2 Transmit

data

3 Receive

data

4 N.C.

5 Signal

ground

6 Data set ready

7 Request to send

8 Clear to send

9 N.C.

Inside of the Scale

‰ The scales are designated as DCE (Data Communication Equipment).

See also other documents in the category Rice Lake Scales: