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BASI
Unit
Table 9 : Nominal values – measurements
4.3.3
Inputs / outputs
PC interface
Active bus
RS485 address
Baudrate
Mode
Modbus parity
Modbus address
Current output
Mode
Fixed current
Qi 20mA
flowrate Qn (nominal flowrate)
Loop test
Error current
Frequency output
Mode
Fixed frequency
Qf 1kHz
flowrate Qn (nominal flowrate)
Pulse output
Mode
Pulse width
Qp 1 pulse
flowrate Qn (nominal flowrate)
Status output
Mode
Error mask
Digital input
Mode
Limit PF1
flowrate -Qn (- nominal flowrate)
Limit PF2
flowrate +Qn (+ nominal flowrate)
Hysteresis
Dose volume
Table 10 : Nominal values - inputs/outputs
Operation manual
°C
RS232
2
9600
Normal
None
10
Off
10 mA
Off
3.75 mA
Off
1000 Hz
Off
100 ms
Off
All errors (255)
Off
Limits
flowrate Qn/10
Dosing
1 m3/h
Electromagnetic flowmeter BFM921
23
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