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ence How many trains have used this crossing in total, and how many were headed North, how many were headed South. (yes, you can add North + South to get total if you wish). Sounds simple, I mean that is what counters were made for. Right? Yes, but you have to be careful not to double count as both sensors are made true with one crossing. How do you make sure each train is only counted once, and put in the correct directional count? Above is part of a PLC programming question (using Logix Pro simulator). How can I use create a PLC program to count trains going north and trains going south separately?

ence How many trains have used this crossing in total, and how many were headed North, how many were headed South. (yes, you can add North + South to get total if you wish). Sounds simple, I mean that is what counters were made for. Right? Yes, but you have to be careful not to double count as both sensors are made true with one crossing. How do you make sure each train is only counted once, and put in the correct directional count? Above is part of a PLC programming question (using Logix Pro simulator). How can I use create a PLC program to count trains going north and trains going south separately?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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How many trains have used this crossing in total, and how many were headed North, how many were headed South. (yes, you can add North + South to get total if you wish). Sounds simple, I mean that is what counters were made for. Right? Yes, but you have to be careful not to double count as both sensors are made true with one crossing. How do you make sure each train is only counted once, and put in the correct directional count?

Above is part of a PLC programming question (using Logix Pro simulator). How can I use create a PLC program to count trains going north and trains going south separately?  

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