Asked by Ariana Rinehart on Jun 20, 2024
Verified
The main difference between a TON and TOF timer is that the:
A) TON timer can maintain its accumulated time on loss of power or logic continuity.
B) TOF timer can maintain its accumulated time on loss of power or logic continuity.
C) TOF timer begins timing when logic continuity to the timing rung is lost.
D) TON timer begins timing when logic continuity to the timing rung is lost.
TOF Timer
"Timer Off-Delay," an instruction in PLCs where the timer starts counting when the input signal turns off, executing an action after the delay period ends.
TON Timer
In PLC programming, it stands for "Timer On Delay", which starts timing when the input condition becomes true and triggers an output after a set time period has elapsed.
Accumulated Time
The total amount of time collected or summed up over a period, often used in scheduling or process control scenarios.
- Comprehend the functional principles of on-delay (TON) and off-delay (TOF) timers.
- Understand the distinction and usage of retentive and non-retentive timers.
Verified Answer
HM
Hannah Magalhaes RodriguesJun 22, 2024
Final Answer :
C
Explanation :
The main difference is that a TOF (Timer Off-Delay) timer begins timing when logic continuity to the timing rung is lost, whereas a TON (Timer On-Delay) timer starts timing when it receives logic continuity.
Learning Objectives
- Comprehend the functional principles of on-delay (TON) and off-delay (TOF) timers.
- Understand the distinction and usage of retentive and non-retentive timers.