PLC Comparator Operators: Comparator operators in ladder logic, plc comparator operators, comparator operators in plc, comparator operator plc, comparator operator ladder logic, ladder logic comparator operators, not equal operator plc, greater than plc, less than in plc Hi friends. Today we are going to go through one of the most commonly used topics in writing ladder logic programming which is using comparator operations. This includes the logical and mathematical comparison between variables to decide where the logic goes. There are many comparator operations li ...