A Scheduled Activity That Determines When a Logical Successor Activity

question 3

Multiple Choice

A scheduled activity that determines when a logical successor activity can begin and end is known as:

• A) a catalyst activity
• B) a predecessor activity
• C) a leader activity
• D) a lag activity

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Definitions:

TON Timer

Stands for Timer ON, which is a count-up timer used in programming PLCs to track time from the moment an instruction is activated until it is turned off.

Preset Time

A predetermined or set duration of time that is programmed into a device or system, after which a certain action or function is triggered.

TON Instruction

stands for "Timer ON Delay" in PLC programming, used to activate an output after a predefined time delay once the input becomes true.

Reset (RES)

A command or signal that initiates the restart or reinitialization of a device, system, or software to its default state.