By using this concept we can count objects moving on the conveyor or any other counting application. This is the simple concept of UP counter. We can implement this logic in other PLC also. This example is only for explanation purpose only. Note :- Above application may be different from actual application. Total counted Objects number will be stored in the memory word or register (MW10). PLC counter counts in the incremental way. When there will be no object near to the proximity sensor then output of sensor becomes de-energize or changes to OFF state. when an object comes near to the proximity sensor (I0.2), it will detect the object and output of the sensor becomes energize or changes to ON state. Proximity sensors are mounted near to the conveyor. PLC Counter instruction is used to count the number of objects. Here we used START PB (I0.0 ) to start the cycle and STOP PB (I0.1) to stop the cycle. In first network we used latching circuit for cycle ON. We can implement this logic by using other PLC also.
SIEMENS STEP 7 CIR REGISTER OBJECT SOFTWARE
PLC Ladder Logic for counting Objects on the conveyorįor this application, we use S7-300 PLC and TIA portal software for programming. Proximity sensor will sense the object and PLC UP counter will count the collected objects. We considered proximity sensor for detecting the objects.
![siemens step 7 cir register object siemens step 7 cir register object](https://www.mhj-wiki.de/en/plc-lab/pics/33_SimaticSchnittstelle300SimMa.png)
Note:- Here we considered simple application for counting objects. Here we use UP counter for counting the collected Objects at the end of conveyor.We connect this sensor to the PLC and by using counter logic,we will count the number of objects and display the total number on the local control panel display. For other type of objects, we use Capacitive proximity sensor for detecting the objects moving on the conveyor. Inductive sensor are mostly used to detect metal objects.
![siemens step 7 cir register object siemens step 7 cir register object](https://www.plc-city.com/shop/155685-home_default/6es7822-0aa06-0ya5-nfs.jpg)
Here we mount proximity sensor to detect the parts or objects moving on the conveyor. Mostly proximity sensors are used to detect the objects.Here we use PLC ladder program to implement this logic.