Hi,
I am newly joined member working as an electronic engineer in a process plant.
I have a problem in a m/c equipped with Mitsubishi PLC Fx-1N-40MR.
I have not done any plc programming course, but i know it by practical experience only.
I have Gx developer V8.0 PLC programmer and unable to understand in PLC program that memory NO/NC contact used to run a step are not defined as a coil in the program. Therefore I dont know when any of these memory signal will be true/false. In general suppose M100 is an out put comes ON when power ON flag is ON. M100 is a coil here and i can use it as NO or NC contact in other steps. But in my plc say M508,M503...... are used as NO contact only but not as a coil. These is the problem to understand when M508, M503 will be ON.
I am newly joined member working as an electronic engineer in a process plant.
I have a problem in a m/c equipped with Mitsubishi PLC Fx-1N-40MR.
I have not done any plc programming course, but i know it by practical experience only.
I have Gx developer V8.0 PLC programmer and unable to understand in PLC program that memory NO/NC contact used to run a step are not defined as a coil in the program. Therefore I dont know when any of these memory signal will be true/false. In general suppose M100 is an out put comes ON when power ON flag is ON. M100 is a coil here and i can use it as NO or NC contact in other steps. But in my plc say M508,M503...... are used as NO contact only but not as a coil. These is the problem to understand when M508, M503 will be ON.