COUNTERS IN PLC

____________ track the number of events that take place in a process

• On Delay Timer

• Off Delay Timer

• Up/Down Counter

• Internal Memory

The______ counter that counts the events that has happened and decrements the counted number by one count.

• Up Counter

• Down Counter

• Weekly Counter

• Hourly Counter

(a)   specifies the number of events that a counter has counted and is pre-set to zero

Counter Specifies the counter address in the _____storage file

• Internal

• External

• Bit

• Data

When the direction pin is enabled as 1 the counter

• Increments

• Decrements

• No change is status value

• resets the counter

In Up Counter when the Done bit energies output enables when (a)  

The Counter enable pin is enabled when the rung is (a)  

A CTU accumulation is reset by the _______ instruction.

• Overflow instruction

• Reverse instruction

• Reset instruction

• Preset Value

Number of pins available in counter block diagram of siemens logosoft is ________

• 2

• 4

• 6

• 3

ON/OFF Thresholds in counters are _______

• variables

• constant value

• address

• time based