Burkert Type 8717 - Manual (Page 13)

13
Serial Communication
command number
command name 0x01
readprimaryvariable
request
Command
0x01
Byte count 0
data -
response
Command
0x01
Byte count 7
Status 2 bytes, device status
data 5 bytes
0
PV units code
1 – 4 primary variable (float) 1)
Description
HART-Universal Command 1.
PV Unit 0 x 39 %
PV Actual flow X (±)
(see also “3.3.3. Codings and units”)
Example:
All data as hexadecimal numbers (prefix 0x) short frame
Primary master
Short address 0
data sent
data received
• Read Primary Variable
0xFF 0xFF 0x02 0x80 0x01 0x00 0x83
0xFF 0xFF 0x06 0x80 0x01 0x07 0x00 0x00 0x39 0x41 0xC8 0x00 0x00
0x30 0x39 for PV Unit = %
0x41C80000 = 25.0 IEEE 754 floating point
1) First byte transferred: MSB
english
MFC Family