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Found 33 results

1. ## Function Block or any other method

Hello, I am a student that has been taught ladder logic for three years( on many different plc's ) but, I would like to learn an alternative method is there any way to convert ladder into Function Block or some other type of programming in RS logic 5000 or any other controller? If not can some one explain the basics of Function Block programming.
2. ## Need to build this

3 It has been decided to introduce a Programmable Controller into a manufacturing plant to control a three phase induction motor via an autotransformer in order to reduce high starting currents. It is required to include an alarm circuit which is to give an audible and visual alarm when the motor is overloaded. A momentary actuated Reset push button is to be included in the alarm circuit which will turn off the audible alarm but leave the overload lamp on until the motor overload is reset. Once the motor overload is reset the overload lamp is to be de-activated. The conventional relay circuit diagram for this starter is shown below. A single Stop/Start push button control station is required to initiate the following motor control sequence. a. Motor 1 turns on the instant the start push button is operated; b. Motor 2 turns on 10 seconds after Motor 1 starts; c. Motor 3 turns on 15 seconds after Motor 2 starts; d. Motor 3 turns off after running for six seconds; e. Motor 2 turns off 6 seconds after Motor 3 stops; f. Motor 1 turns off 3 seconds after Motor 2 stops. If the Stop push button is operated, or a thermal overload from any motor is tripped, the whole system will shut down. Motor 1 will start the control sequence again next time the Start push button is pressed.
3. ## Need to help to understand flow of ladder logic

Hello Everyone, I am new to ladder logic, and trying to understand flow of below attached ladder logic- How does the program flow ? Does PT4601_I in rung 3 waits for rung 2 to complete inorder to consider updated value of PT4601_I or it consider PT4601_I default value and runs simultaneously with rung 2 ? Thank you in advacne
4. ## logic for monitoring the change of position of a carriage

Hello, anyone know how to make a logic that monitors the change in position of a carriage through some rails ?. In my application I measure the position of the carriage by means of a laser sensor and I have to detect if the laser beam is interrupted when the carriage is stationary or moving. I have implemented a logic as the adjunct file, but doesn't work.
5. ## Testing Logic RSLogix 5000

Hello!! I am a beginner in PLC and Automation. I have built a ladder logic program in RSLogix 5000, the controller I selected is 1756 L62 ControlLogix 5562. I want to test my logic. I have installed RSLinx Classic Lite already. Can I use RSLogix Emulate 500 (free downloadable from Rockwell Automations) for testing my ladder logic?
6. ## CX-Programmer display name, Address and Comment

Is it possible to make the ladder logic display the name, address and comment? If so how can i do this? Thank you, Mike