Analog Output in the 4000
The analog output card has 4 channels. Channels 1 and 3 produce a 0-10 volt output, and channels 2 and 4 produce a 0-20 milliamp output.
The analog output card's setpoints are set in MAPPING via the symbols HFO28,HFO29,HFO30, and HFO31.
These setpoints are scaled according to the following rules:
If the setpoint is less than the Low Weight, the analog output is set to V (or I) Low.
If the setpoint is greater than the High Weight, the analog output is set to V (or I) High.
Otherwise, the output is "V (I) Low" + (Setpoint - "Low Weight")*("V(I) High"-"V(I) Low")/("High Weight" - "Low Weight")
The result of the output scaling is available via the MAPPING symbols HFI2,HFI3,HFI4, and HFI5