Emerson ak-protocol nga 2000 User Manual

Page of 136
I) 
V24/RS232/485-Interface - 
Basics
90003752(1) [AK-Commands] 10/98
AK
1 - 3
3. Protocol settings
The data and command transfer protocol has the following structure:
3.1. Command telegram
1. Byte
STX
2. Byte
DON'T CARE
3. Byte
FUNCT. CODE 1
4. Byte
FUNCT. CODE 2
HEAD
5. Byte
FUNCT. CODE 3
6. Byte
FUNCT. CODE 4
7. Byte
BLANK
8. Byte
"K"
VARIABLE DATA
9. Byte
NUMBER
(number with several
digits possible)
D
A
(other data
T
can also disappear,
A
depending on the
function code)
n. Byte
ETX
END