ECOTEST BDBG-09, Руководство по эксплуатации, Страница: 35 / 46

Operating manual ВІСТ.418266.006-03 НЕ
35
“DER1 query”
frame format –the data display system to the detecting unit
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
0 1 1 1 0 0 0 0 D7…D4– protocol v1.3 character
address D7…D0– detecting unit address *
0 0 0 0 0 0 0 0 D7…D0– “DER 1 query” frame code
control arithmetical checksum with a carry
* - 0FFh address – broadcast address. All detecting units respond to the query with this address.
“Current DER1”
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
0 1 1 1 0 0 0 0 D7…D4– protocol v1.3 character
address D7…D0– detecting unit address
0 0 0 0 0 0 0 1 D7…D0– “Current DER1” frame code
DER0 (low byte)
DER,
fixed point number,
Least significant bit = 0.01 µSv/ h
DER1
DER2
DER3 (high byte)
Byte Statistical error of measurement
D7 0 0 0 0 D2 D1 D0
D0,D1 - self-testing results of the
detecting unit
D0=1 - failure of the high sensitivity
detector
D1=1 - failure of the low sensitivity
detector
Reliable measurement result character
D2=0 – result is reliable
D2=1 – result is not reliable *
D7=0 – LSB DER = 0,01 µSv/h
D7=1 – LSB DER = 0,1 µSv/h
control arithmetical checksum with a carry
* - measurement result is accepted as not reliable if the statistical error of measurement exceeds maximum permissible
error of measurement