Das Szenario
Automatic control of fill and empty valves for a tank, using low and high level switches, with emergency stop functionality.
Was diese Zeichnung zeigt
Die dahinterstehenden Entscheidungen verstehen.
01
Use of seal-in circuits to latch valve states
02
Separate rungs for fill and empty control
03
Inclusion of emergency stop contacts
When designing PLC ladder logic for tank level control applications requiring independent fill and empty valve operation.