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70
BM
series
16. Standard Input And Output Interface
16.1.
RS-232C Interface
The balance is a DCE device. Connect the balance to a personal computer (DTE) using a straight
through cable.
Transmission system
: EIA RS-232C
Transmission form
: Asynchronous, bi-directional, half duplex
Transmission rate
: 10 times/second or 5 times/second (same as data refresh rate)
Data format
: Baud rate : 600, 1200, 2400, 4800, 9600, 19200bps
Data bits : 7 or 8 bits
Parity
:
Even,
Odd
(Data bits 7 bits)
None
(Data bits 8 bits)
Stop
bit
:
1
bit
Code
:
ASCII
D-Sub 9 pin assignments
Pin No.
Signal name
Direction
Description
1
-
-
No connection
2 TXD
Output
Transmit
data
3 RXD Input
Receive
data
4
-
- No
connection
5 SG - Signal
ground
6
DSR
Output
Data set ready
7 RTS Input
Request to send
8
CTS
Output
Clear to send
9
-
- No
connection
Signal names of the balance side are the same as the DTE side with TXD and RXD reversed.
Start bit
Data bits
Parity bit
Stop bit
-5V to -15V
+5V to +15V
RS-232C
Balance side
DCE
Computer side
DTE
Inside of balance
Terminal example
+5V
TXD 2
RXD 3
RTS 7
CTS 8
DSR 6
SG 5
RXD
TXD
RTS
CTS
DSR
SG
#4-40UNC
Содержание BM-20
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