Sharp IV-S30 Manual do Utilizador descarregar pdf (Página 271)

100

101

18-6

Communication (General Purpose Serial Interface)

[Method for creating a checksum code]

The ASCII code for each byte of data, from the processing code to the end of text (prior to the

checksum code) is added together. The lower 1 byte of this sum is divided into the upper 4 bits and

the lower 4 bits. The hex character (0 to F) is converted to the ASCII code for that character and

sent as one byte. Thus the checksum code consists of two bytes.

- This manual uses the following notation to represent addresses and set values.

Octal numberI .........................(8) Ex. 377(8)

Decimal number ......................None Ex. 255

Hexadecimal number ............. (H) Ex. FF(H)

Note

: 1001C2

1.................31

0.................30

1.................31

Checksum

code

ASCLII data

: C2

Ex. 1 Command for the measurement

execution function 1 (code 10

(H)

)

Station

No.

Station

No.

:1A1640

E61

1.................31

A................41

1.................31

6.................36

4.................34

0.................30

1.................31

16E

Checksum

code

ASCLII data

: 6E

Ex. 2 Command for the measurement

execution function 7 (code 1A

(H)

)

1 2 ... 266 267 268 269 270 271 272 273 274 275 276 ... 330 331

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