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Troubleshooting Siemens 12 DC Outputs Q0.0 and Q0.1 Not Working as High-Speed Pulse Outputs

Question:

The Siemens 12 (DC/DC/DC) output Q0.0 and Q0.1 are not functioning properly after being used as high-speed pulse outputs. The indicator lights on the PLC are not turning on. What could be causing this issue? The outputs are working fine with the stepper motor. How can the high-speed output be deactivated on the PLC?

Top Replies

If you have turned off the PTO function in your project, it is necessary to disable it in order to use it as a regular output.

Once you have deactivated it, make sure to retrieve the Hardware Configuration onto the PLC. Switch to Offline mode before proceeding with the download.

Sir, the issue has been resolved. Thank you for your prompt response.

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Frequently Asked Questions (FAQ)

FAQ: 1. What could be causing the Siemens 12 DC outputs Q0.0 and Q0.1 not to function properly as high-speed pulse outputs?

Answer: - Possible causes for this issue could include incorrect programming, overload on the outputs, faulty wiring connections, or a malfunction in the PLC itself.

FAQ: 2. Why are the indicator lights on the PLC not turning on when using Q0.0 and Q0.1 as high-speed pulse outputs?

Answer: - The indicator lights may not be turning on due to a lack of proper signal output from the PLC, incorrect configuration settings, or a hardware malfunction in the output modules.

FAQ: 3. How can I troubleshoot the Siemens 12 DC outputs if they are working fine with a stepper motor but not as high-speed pulse outputs?

Answer: - To troubleshoot this issue, you can check the programming logic for the outputs, verify the wiring connections, ensure the outputs are not overloaded, and inspect the PLC configuration settings related to high-speed pulse outputs.

FAQ: 4. Is there a way to deactivate the high-speed output functionality on the PLC for Q0.0 and Q0.1?

Answer: - Yes, you can deactivate the high-speed output functionality by adjusting the programming logic in the PLC to stop generating high-speed pulses on Q0.0 and Q0.1. Review the program and modify the relevant instructions to disable the high-speed output feature.

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