I am in the process of upgrading an SLC system to Logix5000. The setup includes a CompactLogix processor and a 1746-AENTR module in the SLC rack, with an encoder connected to the HSCE card. While I am able to get the encoder counting, it increments in both directions. I have consulted the manual and attempted to adjust the up/down bits without success. The encoder is linked to the terminals a+ and a-. Any insights or assistance would be greatly appreciated. Thank you. - Tom
A single-channel encoder alone lacks the capability to determine the direction of rotation. It only counts pulses unless paired with another device that indicates the encoder's turning direction to the counter card. If such an input is not mentioned, it is assumed that one is not available. Keith
When connecting only the A+ and A- wires, the encoder may not determine its direction. To track movement accurately, it is necessary to connect the B+ and B- wires for quadrature encoders. This additional connection helps the encoder count up or down based on the direction of movement.
Killerabbit inquired about upgrading an SLC system to Logix5000 with a compact logix processor and a 1746-AENTR module. They are facing issues with an encoder connected to the HSCE card counting in both directions. Despite attempting to adjust the up/down bits, the problem persists. The encoder is currently connected to a+/a-. If anyone has experience with this issue, any assistance would be greatly appreciated. Thanks, Tom. Hello, I am also struggling with setting up the HSCE card with 1746-AENTR as I am not receiving any pulses in the input word. My counter configuration seems correct, but I am unable to get it working. Can you share how you managed to configure yours?
Hi Tom! It sounds like you're facing a common issue when integrating encoders with the HSCE card. Since the encoder is counting in both directions, it might be worth double-checking the A and B phase wiring to ensure that they are connected correctly and that there’s no short or cross-wiring. Also, make sure that the configuration settings for the HSCE (like mode and edge detection) match your encoder’s requirements. Sometimes, adjusting the input settings like pulse count and direction threshold can help refine the counting behavior. Keep us updated on your progress! We've all been there, and I'm sure you'll figure it out.
Hi Tom! It sounds like you're on the right track with the setup. Since the encoder is counting in both directions, it might be worth checking the configuration of the HSCE card to ensure that the channel direction settings are correct. Also, double-check the wiring to confirm that the A and B signals are wired properly; sometimes a reversed connection can lead to unexpected counting behavior. You might want to explore the "Invert" options in the HSCE parameters too. If all else fails, looking at the signal waveform with an oscilloscope can provide clarity on whether you're getting clean transitions. Good luck!
Hey Tom, it sounds like you’re on the right track but might be encountering a common issue with encoder setup. One thing to double-check is your encoder's wiring to ensure that the phase A and phase B signals are correctly connected to the HSCE card. If these signals are swapped, it could cause counting in both directions. Additionally, make sure that the configuration in the software is set up correctly for the encoder type you're using. There might be a need to specify the direction in the logic as well, depending on how the counting is being set up in your program. Hope you get it sorted out!
Hey Tom, it sounds like you're on the right track with your upgrade! It could be helpful to double-check how the encoder wiring is configured, especially ensuring that the A and B channels are connected correctly and not reversed. Sometimes, the direction can be influenced by the configuration settings in the HSCE card too. Have you tried looking at the HSCE's parameter settings for the encoder mode? You might also want to verify that the encoder signals are clean and that there’s no noise affecting the counts. Good luck, and keep us posted on your progress!
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Answer: Answer: To troubleshoot encoder direction issues during an upgrade, ensure that the correct wiring connections are made and review the configuration settings in the Logix5000 software.
Answer: Answer: This issue could be due to incorrect configuration settings in the Logix5000 software or improper wiring of the encoder to the HSCE card. Verify the configuration and wiring to resolve the problem.
Answer: Answer: Refer to the manual for the 1746-HSCE card for specific instructions on adjusting the up/down bits to control the direction of encoder counting. Double-check the configuration settings in the Logix5000 software as well.
Answer: Answer: Ensure that the encoder is connected to the correct terminals (a+ and a-) on the 1746-HSCE card according to the manufacturer's guidelines. Check the wiring to ensure proper connection.
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