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26
RS-232C
Transmission system
: EIA RS-232C
Transmission form
: Asynchronous, bi-directional, half duplex
Data format
: Baud rate
: 600, 1200, 2400, 4800, 9600, 19200 bps
Data bits
: 7 bits or 8 bits
Parity bit
: EVEN, ODD
(Data bits 7 bits)
NONE
(Data bits 8 bits)
Stop bits
: 1 bit or 2 bits
Code
:
ASCII
Terminator
: <CR> or <CR><LF>
Circuit
Connection to the weighing instrument
Connection to an external device
D-Sub 9-pin (BALANCE/SCALE)
DIN 8-pin (COMP.OUT)
Pin
No.
Signal
name
Direction
Description
Pin
No.
Signal
name
Description
1
⎯
⎯
N.C.
1 HI HI
contact-output
2 RXD Input
Receive
data
2 COM
COM
contact-output
3 TXD Output
Transmit
data
3 TXD
Transmit data (RS-232C output)
4
⎯
⎯
N.C.
4 LO
LO
contact-output
5 SG
⎯
Signal ground
5
SG
Signal ground
6
DSR
Input
Data set ready 6
OK
OK
contact-output
7
RTS
Output
Request to send
7
DSR Data set ready (RS-232C output)
8
⎯
⎯
N.C.
8
RXD Receive data (RS-232C output)
9
⎯
⎯
N.C.
(AD-8922A is a DTE. Connects to a DCE
such as a weighing instrument using a
straight through cable.)
9
8
7
6
SG
SG
TX
D
RX
D
HI
OK
LO
COM
HI
OK
LO
DSR
AD-8922 A interior
AD-8922A interior
TX
D
RX
D
6
1
4
2 5
3
7
8
5
4
3
2
1
To a weighing instrument
To an external device such as
a personal computer or a printer
Inch screw thread
(#4-40UNC)
Содержание AD-8922A
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