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trouble reading digital input pins

Created by: robbie c at: 3/16/2022 11:48 AM (15 Replies)

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3/16/2022 11:48 AM	Rate (0)
robbie c Experienced Member Joined: 8/2/2021 Last visit: 5/14/2025 Posts: 91 Rating: (4)	hi guys, im running nodered on iot2050 i can comfirm communcation by using the iot2050 gpio nodes to change the LED colour on the hardware however its not able to read the digital input pins m is connected to 0v DI0 is connected to 24vdc using digital input node set to read pin 12 (i was told thats the pin for di 0) however it doesnt seem to read any change
	Changing random lines of code in your program until it works is "hacky" and "bad practice" but if you do it fast enough it's machine learning and pays 4 x your salary
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3/16/2022 12:08 PM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	Hi, are you using the Siemens Input/Output Module? In this case D12 is the correct pin for DI0. What is the output of the node on node-red? Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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3/16/2022 12:12 PM	Rate (0)
robbie c Experienced Member Joined: 8/2/2021 Last visit: 5/14/2025 Posts: 91 Rating: (4)	hi! i am using the siemens input/output module, i have tried using d12 pin to read DI0 and D11 to read DI1 but both are reading low even with 24vdc applied! im monitoring the pins in PUTTY and its not registering any changes
	Changing random lines of code in your program until it works is "hacky" and "bad practice" but if you do it fast enough it's machine learning and pays 4 x your salary
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3/17/2022 11:54 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	Hi, which image version are you using? I cannot test this at the moment unfortunately, but beginning of next week I can check. Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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3/17/2022 12:41 PM	Rate (0)
robbie c Experienced Member Joined: 8/2/2021 Last visit: 5/14/2025 Posts: 91 Rating: (4)	FS2 with image v1.2.1
	Changing random lines of code in your program until it works is "hacky" and "bad practice" but if you do it fast enough it's machine learning and pays 4 x your salary
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3/17/2022 12:42 PM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	IOT2050 or Basic or Advanced? Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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3/17/2022 12:49 PM	Rate (0)
robbie c Experienced Member Joined: 8/2/2021 Last visit: 5/14/2025 Posts: 91 Rating: (4)	iot2050 basic thankyou
	Changing random lines of code in your program until it works is "hacky" and "bad practice" but if you do it fast enough it's machine learning and pays 4 x your salary
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3/21/2022 9:38 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	Hi, I tested with IOT2050 Basic FS:01, but with that device the inputs work as they should. I do not have a FS:02 at hand at the moment, but I asked R&D to test with a FS:02. I created an issue on github for that. Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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3/21/2022 10:04 AM	Rate (0)
robbie c Experienced Member Joined: 8/2/2021 Last visit: 5/14/2025 Posts: 91 Rating: (4)	thanks bergmanu thats very helpful i hope someone comes back with an answer soon
	Changing random lines of code in your program until it works is "hacky" and "bad practice" but if you do it fast enough it's machine learning and pays 4 x your salary
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4/7/2022 9:33 AM	Rate (0)
CyrilJ Posts: 11 Rating: (0)	Hello, I'm interested in the conclusion of this topic, have exactly the same issue with IOT2050 advanced + Input/output board. Scanning all the digital inputs (with node-red) from D1 to D19 (!) and nothing is moving, while applying 24V on DI0 and DI1 having on and off 24v regularly (plugged on a production line) to be noted: no issue with USER button, and LED, only issue with the I/O on the added board root@GMSPRODASSIOT1:~# mraa-gpio list 00 IO0: GPIO UART 01 IO1: GPIO UART 02 IO2: GPIO UART 03 IO3: GPIO UART 04 IO4: GPIO PWM 05 IO5: GPIO PWM 06 IO6: GPIO PWM 07 IO7: GPIO PWM 08 IO8: GPIO PWM 09 IO9: GPIO PWM 10 IO10: GPIO SPI 11 IO11: GPIO SPI 12 IO12: GPIO SPI 13 IO13: GPIO SPI 14 A0: GPIO AIO 15 A1: GPIO AIO 16 A2: GPIO AIO 17 A3: GPIO AIO 18 A4: GPIO I2C AIO 19 A5: GPIO I2C AIO 20 USER: GPIO root@GMSPRODASSIOT1:~# mraa-gpio version Version v2.2.0 on SIMATIC IOT2050 Rgds Cyril
CyrilJ Posts: 11 Rating: (0)	Last edited by: CyrilJ at: 04/07/2022 09:43:24 Last edited by: CyrilJ at: 04/07/2022 09:43:42 Last edited by: CyrilJ at: 04/07/2022 09:59:20
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