Asked by Chris Huynh on May 12, 2024
Verified
Which instruction can best be used to turn an output coil on or off after the rung has been false for a desired time?
A) RTO
B) TON
C) ON OFF
D) TOF
TOF
Time-Of-Flight, a method used to determine the distance to an object or surface by measuring the time it takes for a signal to travel to the object and back.
Rung False
A condition in ladder logic programming indicating that the logic statement or condition on a specific ladder rung does not yield a true (or active) output.
- Acquire knowledge on the operational functionalities of on-delay (TON) and off-delay (TOF) timers.
- Recognize the starting conditions for different timers within PLC programming.
Verified Answer
KM
kristy mcgregorMay 17, 2024
Final Answer :
D
Explanation :
The TOF (Timer Off-Delay) instruction is used to turn an output coil on or off after the rung has been false for a desired time. It starts timing when the input condition becomes false.
Learning Objectives
- Acquire knowledge on the operational functionalities of on-delay (TON) and off-delay (TOF) timers.
- Recognize the starting conditions for different timers within PLC programming.