Solution for a Water Tank Level with PLC Ladder Control
Project Issue:
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Water-Tank System Level Controller See control of water level in a reservoir. The entrance to the pressure transducer, Vp, a full tank varies between 0V (empty tank) and 5V (). An output voltage, Vo, a valve will change the situation, the rate of filling tanks. Vo varies between 0V (no water) flow) and 5V (maximum flow. The system will always be: “Emergency is electrically connected. The desired height of the container is indicated by a different voltage, VD. The output voltage is measured by Vo = 0.5 (VD - Vp). When the output voltage is greater than 5 V be 5V, and below 0V 0V.

Solution
Analog Input : Select a 12 bit 1771-IFE card and use the 0V to 5V range on channel 1 with double ended inputs
R = 2N = 4096
Analog Output : Select a 12 bit 1771-OFE card and use the 0V to 5V range on channel 1 with double ended inputs
R = 2N = 4096
Card ——-> I:000 - Analog Input
I:001 - Analog Output
Memory : N7:80 - Vd

A Water Tank Level Control PLC ladder

A Water Tank Level Control PLC ladder (continue)