Hello everyone,
I’m getting started with PLCnext Engineer and a PLCnext 2152 controller (starter kit). I followed the setup steps as per this video (PLCnext Lesson 4 - Programming the Controller’s External Digital IOs - YouTube), but I’m facing an issue where my program is not responding as expected.
Setup Details:
- Hardware & Configuration:
- Connected PLCnext 2152 with necessary I/O modules.
- Assigned variables to I/O ports in the module configuration.
- Program Implementation:
- Created a simple Function Block Diagram (FBD) logic with two input buttons connected to an OR gate and an output.
- Mapped inputs and outputs to the corresponding I/O ports.
- Uploaded and started the program.
- Observations:
- Pressing the input buttons physically causes the corresponding PLC input LEDs to light up (indicating hardware input recognition).
- However, in PLCnext Engineer 's debug window, there is no change in the input state or the output state when pressing the buttons.
- The output LED on the PLC does not activate even though the logic should turn it on when either input is pressed.
Questions:
- Is there a missing configuration step in PLCnext Engineer to visualize input/output states in the debug window?
- Do I need to manually trigger the program execution (e.g., run mode, task settings)?
- Is there a specific setting required to ensure the PLC processes I/O updates correctly?
Any insights would be greatly appreciated! Thanks in advance for your help.
The above is from an online video
Here is how I get it on PLC Engineer, the variable (PLC) and process data item look different on mine. Why is it so?
