Instruction Manual

10 • Introduction
1.10. How to Calculate Checksum Value
Format of NuDAM Commands
(LeadingCode)(Addr)(Command)(Data)
[Checksum]
<CR>
When checksum is enable then [Checksum] is needed, it is 2-character.
[Checksum] =
(
(LeadingCode)+(Addr)+(Command)+(Data)
) MOD 0x100
Example 1: checksum is
disable
User Command : $012<CR>
Response : !01400600
Example 2: checksum is
enable
User Command :
$012
B7
<CR>
Response :
!01400600
AC
‘$’ = 0x24 ‘0’ = 0x30 ‘1’ = 0x31 ‘2’ = 0x30
B7 = (
0x24 + 0x30 + 0x31 + 0x32
) MOD 0x100
‘!’ = 0x24 ‘0’ = 0x30 ‘1’ = 0x31 ‘4’ = 0x34
‘6’ = 0x36
AC
=
(
0x24+ 0x30+ 0x31+ 0x34+ 0x30+ 0x30+ 0x36+ 0x30+ 0x30
) MOD 0x100