
8
6.1.2
The serial data (ASCII code) is transmitted in continuous mode by MCS-51 way 1. Every group
of data has 17 frames including 1 frame of start character (02), 3 frames of state mark, 6 frames of data
displaying, 6 frames of tare data and 1 frame of enter, as follows:
STX
State A
State B
State C
Displayed value
Tare value
Enter
STX:
start character, 02H
State A:
Control character for decimal point ( D7 refers to verification bit)
D7
D6
D5
D4
D3
D2
D1
D0
Decimal point place
0
1
0
1
0
1
0
Without decimal point
0
1
0
1
0
1
1
1-digit decimal
0.0
0
1
0
1
1
0
0
2-digit decimal
0.00
0
1
0
1
1
0
1
3-digit decimal
0.000
0
1
0
1
1
1
0
4-digit decimal
0.0000
V
e
ri
fic
a
tio
n
b
it
State B:
comprehensive control character.
D7 verification bit
D6 0
D5 1
D4 1
D3 Dynamic mark bit
D3=0, stability;
D3=1, non-stability (dynamic)
D2 Overload mark bit
D2=0, normality;
D2=1, overload
D1 Positive and negative mark bit
D1=0, positive number; D1=1, negative number
D0
Gross weight and net weight mark bit
D0=0, gross weight;
D0=1, net weight
State C:
output space character
6.1.3
Every frame consists of 10 digits. The first is start bit, “0”. The ninth is stop bit, “1”.
One of the other eight is correction bit and the other seven are all data bits (from low to high), the format
is as follows
No. 03
G=1.576 lb
T= 0.948 lb
N= 0.628 lb
Stop bit
D0
D0
D0
D0
D0
D0
D0
D0
Verification bit
Figure 6: Frame format
6.2
Ticket printing output
6.2.1
Option of the indicator data
This indicator can be matched to EPSON TM-U295 micro-printer. In order to match to the printer, set
F1.5=0, and set F1.3 consistent to the printer. At this moment, if you press [P] key, the printer will print
the ticket as the following format:
Start bit
No. 04
G=0.714 kg
T= 0.429 kg
N= 0.285 kg
When the weight unit is lb.
When the weight unit is kg.
Figure 7: Ticket printing format
USER’S MANUAL
CWP. Bench scale
Summary of Contents for CWP
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