PLC TEST REVIEW QUESTIONS WITH COMPLETE SOLUTIONS

PLC - ANSWERProgrammable Logic Controller, it is a special purpose, industrial computer designed to control wide variety of manufacturing machines and systems True input = input condition met = - ANSWERTrue output from the instruction A true input instruction produces a - ANSWERTrue output Physical relays have - ANSWERLimited contacts 8 or 11 Virtual relays have - ANSWERUnlimited contacts Relay Ladder Logic does not.... - ANSWERDirectly represent current flow Know what each position represents in an address. - ANSWER1st position- Input/Output 2nd position- Slot 3rd position- Terminal ex: 0: 5/8 What do the XIC and XIO symbols represent? - ANSWERXIC- examine if closed XIO- examine if open What are the basic parts of a PLC? - ANSWERInput, Output, communication interface, power supply, Memory, CPU PLC logic is __________________ in a program presented graphically on a screen - ANSWERMemory locations