<![CDATA[The development of technology demands efficient and work speed, so it needs a system which can handleseveral things.This problem can be covered with PLC (Programmable Logic Control) that can integrateseveral self standing component to be an integrated control system and can be changed the configurationwithout change all instrument. Modify the ladder program can alter system of PLC. This paper showsHoist Hanger system in PTC/ED (Pre Treatment Chemical/Electrocoat Dispotition) process that controlledby PLC. Above input from limit switch, sensor, or the other input, PLC system drives the motorrelay Hoist Hanger machine. That cause the motor relay Hoist Hanger change its condition, so the movingof Hoist Hanger machine will be suitable with PLC program.]]>
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