Program Control Instructions in PLC Programming

Program control instructions are used to alter the program scan from its normal sequence.

Sometimes referred to as override instructions, they provide a means of executing sections of the control logic if certain conditions are met.

They allow for greater program flexibility and greater efficiency in the program scan. Instructions comprising the override instruction group include

i) Master Control Reset (MCR), and

ii) Jump (JMP) instructions.

Program Control Instructions

PLC Examples