Servomex SERVOPRO - Page 164

SERVOPRO NOx Analyzers Page
163
2
nd
Byte Don’t Care Any ASCII code
3
rd
Byte Function Code 1 AK instruction, e.g. ASTF
4
th
Byte Function Code 2 AK instruction, e.g. ASTF
5
th
Byte Function Code 3 AK instruction, e.g. ASTF
6
th
Byte Function Code 4 AK instruction, e.g. ASTF
7
th
Byte Blank
8
th
Byte K
9
th
Byte 0
10
th
Byte Blank
D AK instruction parameters; lengths variable
A AK instruction parameters; lengths variable
T AK instruction parameters; lengths variable
A AK instruction parameters; lengths variable
nth Byte ETX ASCII Code 03
Example:
<STX> 02H example: ASTZ K0
Don’t Care Any byte (default 20H)
Function Code Code 4 bytes long (e.g. ASTZ)
Space 20H 20H
Channel N° Always “K0” for the analyzer
Space 20H (only if followed by data, otherwise <ETX>)
Data Data bytes (depending on the command)
<ETX> 03H
ACKNOWLEDGEMENT COMMAND
Byte Character Explanation
1
st
Byte STX ASCII Code 02
2
nd
Byte Don’t Care Any ASCII code
3
rd
Byte Function Code 1 Echo of the AK instruction command
4
th
Byte Function Code 2 Echo of the AK instruction command