![]() ![]() Both the timer and counter would function as output instructions in a PLC program. ![]() The timer and counter both are of 16 bits, the timers and counters are the fundamental PLC instructions and it is common to all PLCs. The timer would time up to the value set by the user and the counter will count up to the value set by the user. ![]() The timers and counters are used in a PLC for its continuous operation so they are inevitable in a PLC. There is memory space in the PLC to store instructions and it would also do the functions such as timing, counting, arithmetic, data handling, and sequencing. Counters are used to count the set of events that have occurred and the latch or unlatch is used to lock something ON or to turn it off. The timer is used to indicate that the input is turned ON/OFF or to create a delay. Mostly a PLC would use certain events such as PLC scanning which indicates that the PLC has just been turned on. So during these conditions, we use events to determine the condition of the system. ![]() It is not possible to control complex systems by using certain logic and it is because we can’t use sensors to check all the conditions. A PLC is a specialized computer that is used to control and operation of manufacturing process or machinery. ![]()
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