ECOTEST BDBG-09, Руководство по эксплуатации, Страница: 30 / 46

Operating manual ВІСТ.418266.006-03 НЕ
30
“Temperature query”
frame format – the data display system to the detecting unit (for the
detecting units with embedded temperature detector)
D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 1 0 1 0 1 Byte 55h
– start-of-frame character
Byte AAh
1 0 1 0 1 0 1 0
1 0 0 0 А3 А2 А1 А0
D7…D4 – “Temperature query” frame code
D3…D0 – detecting unit address *
* -
0Fh address – broadcast address. All detecting units respond to the query with such address.
“Current temperature”
frame format – the detecting unit to the data display system
D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 1 0 1 0 1 Byte 55h
– start-of-frame character
Byte AAh
1 0 1 0 1 0 1 0
1 0 0 0 А3 А2 А1 А0
D7…D4 – “Temperature” frame code
D3…D0 – detecting unit address
2
3
2
2
2
1
2
0
2
-1
2
-2
2
-3
2
-4
Temperature, binary number
S=0-above-zero temperature
S=1-below-zero temperature
D7=0-normal operation of thermal
detector
D7=1-failure of thermal detector
D7 X X X S 2
6
2
5
2
4
control arithmetical checksum with a carry