Vestil SCALE-S - Manual (Page 9)

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4. Serial communication interface at the back of the display controller marked
the RS232-joint BD9 as the below drawing:
5 4 3 2 1
9 8 7 6
Pin function and definition as bellows:
DB9 joint Definition Function
2 TXD Sending data
3 RXD Receiving data
5 GND Ground interface
6 V+ Printer power ( positive)
8 V- Printer power( negative)
Note： Only 2 pin and 5 pin connecting with second display
5. Serial interface reception command：
RS232COM serial interface can receive simple ASCII command. And
Command word and role as follows:
Command Name Role
T Tare off command Save and clear tare
Z Zero command Zero the gross weight
P Print command Print the weight
G Gross/net weight shift
command
Gross/net weight shift
R Read gross/ net weight Read gross/net weight
6．Continuous output：
Reaction of command
“R” are same as continuous output
, , R F
S 1 S 2 S 3 Data S 4
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