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Circuit diagram
Data format
S T
,
+ 0 0000
.
00_k g C
R
L
F
Header Data Unit Terminator
There are 4 headers for the weighing data.
ST: Stable weighing data
QT: Stable counting data
US: Unstable weighing data
OL: Out of weighing range
The data consists of 9 characters including the polarity and decimal point.
There are 5 units.
_ k g: Weighing mode “kg”
_ _ g: Weighing mode “g”
_ l b: Weighing mode “lb”
_ o z: Weighing mode “oz”
_ PC: Counting mode “pcs”
As a terminator, C
R
L
F
is always output.
1 Receive data RXD
2 Transmit data TXD
3 Data set ready DSR
4 Signal ground SG
5 Shield SHLD
SW is designed as DCE (Data Communication Equipment).
1 Relay output LOLO
2 Relay output LO
3 Relay output OK
4 Relay output HI
5 Relay output HIHI
6 Relay common COM
7 Shield SHLD
Solid sate relay
SW inside
LOLO
LO
OK
HI
HIHI