Reading Error

Hi guys,
I have a flowmeter with 4-20 mA output to s5 135U plc and scada (Fix)
I am expecting to read 0 hl/h @ 4 mA output from the flowmeter, but now I read -536 hl/h @ 4 mA from flowmeter.
In my plc program I have a funtion block & data block with Dw 0-202
Where can i a change to read 0hl/h @ 4 mA on scada?
Can someone pls help me
Tanx
Kojo

You would need to add code to scale your flowmeter input which will convert the 4-20mA input from the flowmeter to your range limits,e.g.
0-1000m3/hr etc.

Where is the engineering unit scaling done (PLC or SCADA).
If in PLC then write a cut-off routine ( if less the ? mov 0 to
data file. If scaling is in SCADA, send to a calc. block do a compare
to cut-off. (data > ?)* data= cut-off data