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Sewha SI 480E - Command Mode Examples; Write Command Examples

Sewha SI 480E
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40
SI 480E DIN SIZE WEIGHING CONTROLER
WRITE COMMAND
Ex) SP1 Setting Command, ID No : 01, New SP1 Set value : 0.600kg
1) PC Write command format (STX ID WPR1 000.600 ETX) CHECK SUM not use.
PC transmits to SI480E
SI480E Response to PC
Normal operation Incorrect operation
1) PC Write command format (STX ID WPR1 000.600 ETX) CHECK SUM use.
PC transmits to SI480E
SI480E Response to PC
Normal operation Incorrect operation
All Read/Write command must be use HEX CODE..
How to Calculate Check sum.
- Sum the value from STX to ETX and converts to ASCII(2byte) and transfer.
Convert the Sum value(HEX) to ASCII and transmit(28byte) .
ex) The sum HEX value from STX to ETX(02,30,31,52,43,57,54,03) is 1A6h.
Then, divide 1A6h by 100h(1A6h/100h). the rest of result is A6h.
Calculated remainder value is A6h, then convert A6h to ASCII, 41(A), 36(6), and transfer.

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