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
