
Serial Communication
Output Types
VT200/220 Technical Manual, Rev 1.00.01
57
Doc
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TM-VT200/220-EN
Example:
STX ADD ? 0 BCS2 BCS1 ETX
Hex
2 41
3F
30
3C 34
3
Ascii
STX A ?
0 < 4
ETX
ADD (Address) is set in
3.t
= 65-90 (A-Z)
CheckSum is calculated as the XOR sum of all data characters, ETX excluded.
E.g. 02 XOR 41 XOR 3F XOR 30 = 4C (BCS1 = 30+C=3C, BCS2 = 30+4=34)
Slave Response
STX ADD ? 0 STATUS
BYTE WEIGHT X Y Z BCS2 BCS1 ETX
WEIGHT = 5 decimal point if any. (ASCII,MSD FIRST)
X = Scale number
0 = Scale 1 + Scale 2
1 = Scale 1
2 = Scale 2
Y = Digital input (TILT)
0 = Not Active
1 = Active
Z = Setpoints
0 = Neither is active
1 = Setpoint 1 is active
2 = Setpoint 2 is active
3 = Setpoint 1, Setpoint 2 are active
Status Byte
B7 B6
B5
B4 B3
B2 B1 B0
Zero or
Parity
1 Under
Min.
Weighing Range
0=NO, 1=YES
No Motion
0=NO,
1=YES
Out of Range
0=NO
1=YES
Autozero
0=NO
1=YES
0=Gross
1=Net
0=Normal
Weight
1=No
Weight
The
slave response will contain a message in place of the weight if b0 of the status
byte is high.