Is there any sample PLC code or code for sale that would control a
constant ratio of four ingredients being mixed together? The code
will pull four percentages from a recipe list, and during ramp up,
master rate, ramp down, and hold rate, keep the percentage of
ingredients constant. PID control has analog outputs to control
valves and pulsed inputs from flowmeters. Similar code for other PLCs
would be acceptable, but Allen Bradley RSLogix 500 for MicroLogix 1500
PLC is preferred.
constant ratio of four ingredients being mixed together? The code
will pull four percentages from a recipe list, and during ramp up,
master rate, ramp down, and hold rate, keep the percentage of
ingredients constant. PID control has analog outputs to control
valves and pulsed inputs from flowmeters. Similar code for other PLCs
would be acceptable, but Allen Bradley RSLogix 500 for MicroLogix 1500
PLC is preferred.