User`s manual
22-6
Communication (General Purpose Serial Interface)
22
[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 number ..........................(8) Ex. 377(8)
Decimal number ......................None Ex. 255
Hexadecimal number ............. (H) Ex. FF(H)
Note
:1000000 1C2
CR
0.................30
0.................30
1.................31
0.................30
0.................30
1.................31
122
Checksum
code
ASCII data
: 22
Ex. 1 Command for the measurement
execution function 1 (code 10(H))
Station No. Station No.
:1A1640
CR
E61
0.................30
0.................30
1.................31
A................41
1.................31
6.................36
4.................34
0.................30
1.................31
1CE
Checksum
code
ASCII data
: CE
Ex. 2 Command for the measurement
execution function 7 (code 1A(H))