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).
46
Summary of Contents for FC-5000Si
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