Hello, I am in possession of a Micro 850 PLC with a 2080-MOT-HSC module, which is being supplied data by two flowmeters from Schneider Electric using IMT31 converters. The flowmeters are transmitting pulse signals through D/D- connections, while I have currently connected them to the HSC module using A/A- and B/B- connections. I am unsure if 24VDC and 0VDC connections are required for the O/O- terminals, and if anything needs to be connected to the Z terminals. Although the flowmeters are functioning properly, I am not receiving any data through the HSCE_CFG or HSCE blocks in the logic program. I have attached my wiring configuration and code for reference. Any assistance would be greatly appreciated. Please note that the code provided is not yet complete, as I encountered issues with the flowmeters during installation.
I connected my A- and B- wires to the -24VDC at the main power terminals, not sure if that matters. Using the PWM/PTO outputs of a MicroLogix 1100 with its -24VDC linked to the same power source, I was able to operate the 2080-MOT-HSC. I recall the HSC instruction being a bit tricky to configure with the right input parameters for counting. It must also be set up in the main PLC tab ("Micro820"). To learn more, you can check out various videos on platforms like YouTube; @Tim Wilborne's video should help you get started.
If you are dealing with passive flowmeters, it is crucial to source 24 for proper functioning. Have you properly connected the 24 to the wires from the source or have you linked them elsewhere? Consider running your signal wires to terminal blocks with power connections before connecting them to the A and B positive terminals. This will prevent any potential damage to the controller. Also, if you are uncertain about the input wiring, referring to the manual may provide clarity. Feel free to reach out if you need further assistance in this regard.
I have integrated a Schneider Electric flowmeter IMT31 converter with a D/D- pulsed output into the logic of the 2080-MOT-HSC. Despite following the provided configuration instructions, the flowmeters are not registering any readings. Flowmeter one is connected to A+/A- and flowmeter two is connected to B+/B-, but there seems to be an issue with receiving the signal input. Could I possibly be overlooking a connection? It is important to note that the pulse output is 'passive' and requires external power, meaning that the loop must be powered from the PLC. This information is crucial for ensuring proper functionality.
It appears that there is an output on the final rung of your program without a corresponding variable. This issue may prevent your program from running successfully.
I must clarify that the code is currently incomplete, specifically at the flowmeter section. Please note that not all of the code has been disclosed, as it contains proprietary information and is not pertinent to resolving inquiries.
Hi, it seems like you've done a thorough job in integrating your setup. From my experience with Micro 850 PLCS and the 2080-MOT-HSC module, it's not compulsory to connect anything to 24VDC and 0VDC on the O/O- terminals if you're only using A/A- and B/B- for pulse inputs from the flowmeter. The terminals are there for flexibility in connectivity. The Z terminal is typically for index function, unless you have a specific need for it, you might not need to connect anything. As for the software issue, it might be connected to the appropriate configuration of channels or data types mismatch. Check that the high-speed counter block is configured correctly to process the pulse signals transmitted, and the HSCE_CFG or HSCE blocks are correctly set in your logic program. Also, do ensure the flowmeters' pulse signals are compatible with what the HSC module accepts.
It sounds like you've got quite a setup there. I suspect there might be some issues with your wiring or possibly the configuration of your logic program. Firstly, the O/O- terminals on your module are typically used for Counter Output, and only need to be connected if you are employing this feature. Secondly, the Z terminal is for Zero detection and not required in all setups, especially not in simple pulse counting. As for your program, without seeing your exact code and wiring, I can only guess, but it's possible you might need to recheck your counter configuration within your HSCE blocks; ensure you're referencing the correct instances for your flowmeters. It can also be helpful to check if the pulse signals from your flowmeters are reaching the HSC module using a digital input monitoring tool.
It sounds like you've got a complex setup there! I'd suggest first ensuring that your wiring and configurations match the specifications in the Micro 850 PLC and 2080-MOT-HSC module's manuals for flowmeter inputs. Remember that your A/A- and B/B- connections are differential inputs and should ideally come from a differential source. The Z terminals are typically utilized for reset functions, but check your specific instructions to confirm. The 24VDC and 0VDC connections to the O/O- terminals might not to be carried out unless your flowmeters require external power. As for your logic program, you might not be receiving any data through the HSCE_CFG or HSCE blocks because the initial setup in your program could be problematic, or perhaps the scale factors aren't correct. Keep debugging your code and check your program against sample code where possible. Good luck!
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Answer: - Yes, the 24VDC and 0VDC connections are required for proper operation of the flowmeters through the HSC module. Ensure these connections are correctly wired.
Answer: - The Z terminals are usually not used for flowmeter applications with pulse signals. Focus on the A/A- and B/B- connections for receiving the pulse signals from the flowmeters.
Answer: - Check your logic program for any errors or misconfigurations related to the HSCE_CFG or HSCE blocks. Ensure that the HSC module is correctly configured to receive and process the pulse signals from the flowmeters.
Answer: - Verify the wiring connections, troubleshoot the logic program for any errors, and double-check the configuration settings on the HSC module. It might also be helpful to consult the documentation provided by Schneider Electric for troubleshooting guidance.
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