BASI
Electromagnetic flowmeter BFM921
Operation manual
39
Fixed frequency setting
SFF(?)<DNPD>
Command sets fixed for frequency in range between 10 Hz and 12 kHz. Frequency output must be set to
“Fixed” mode.
<DNPD>
It represents frequency for “Frequency output” in Hz.
BF
M921 confirms execution with string
„Ok<cr>”. In case of query
BF
M921 returns set value in Hz.
Example:
Command „SFF1000<cr>” sets frequency output to 1000 Hz (it must be set to “Fixed frequency” mode).
After query „SFF?<cr>” flowmeter returns string „1000.000000<cr>”.
5.2.2.3.3
Pulse output
Impulse output mode setting
SPM(?)<CPD> { 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 }
Following modes can be set:
0
Off
1
Positive Flow
2
Negative Flow
3
Absolute Flow
4
On Positive
5
On Negative
6
On In
7
On Out
8
Dose On
9
Dose Off
10 On>F1
11 On<F1
M921 confirms execution with string „Ok<cr>”.
Example RS232:
Command „SPM1<cr>” sets mode “Positive flowrate” for impulse output. If query „SPM?<cr>” is sent,
flowmeter returns response in format „1<cr>”.
Impulse output constant Qp setting
SPO(?)<DNPD>
Command sets constant Qp, which represents volume for 1 impulse.
<DNPD>
It represents volume for 1 impulse in actual units. M921 confirms execution with string „Ok<cr>”. In
case of query
BF
M921 returns set value in actual units.
Example:
Command „SPO1.0<cr>” sets value Qp to 1.0. After query „SPO?<cr>” flowmeter returns string
„1.000000<cr>”.
