LAP 10 Application Development

The _____________ mode allows the operator to operate the actuators one at a time by pressing pushbuttons or operating selector switches.

manual

The ______ ________________ shows how the machine's devices are wired to the PLC's inputs and outputs.

I/O diagram

Two applications that use timed functions are _____________ and ____________.

alarms communication

Most _______________ machines are designed with more than one type of stop function to meet various situations where a machine should be stopped.

automatic

The normal operating mode of most machines is the _______________ mode.

automatic

A common special function is to provide the ability to change the mode of operation from ________________ to _______________.

automatic manual

________________ are used to activate or de-activate a device after a predefined number of cycles.

counters

The ____________ stop function causes the machine to stop after the machine finishes the last step in its cycle.

cycle

The fail-safe _____________ ________ function should always be hard-wired into the power-supply of the PLC's outputs.

emergency stop

Three common stop functions are the: cycle stop cycle halt _______-______ emergency stop

fail safe

The _________ function causes the machine to stop after finishing its current step. It resumes operation beginning with the next step when a start signal is received.

halt

Two applications that use counters are _____________ and _______________.

motors production

______________ refers to program logic that places one branch circuit inside of another.

nesting

A control system should be designed so that devices automatically go to a _________ condition should ____________ power be lost.

safe control

__________________ are used to activate or de-activate a device after a predefined time.

timers

After coils and contacts, ____________ and _______________ are the most commonly used PLC instructions.

timers counters

A ___________ ___________ is a detailed sequence of operation that shows the on/off status of every input and output device/address for each step in the sequence.

truth table

A programmer uses the _________ __________ and ______ ______________ to develop the program logic for the PLC application.

truth table I/O diagram