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    Posts made by MikeyH

    • RE: Cooling and Heating

      Hi Jaroslav,

      What would work but wouldn't I then have to use a PIDU block (or similar) for the main process control? I don't need the accuracy of a PID controller.

      This is my current cooling solution.

      0_1571428686770_70df882c-0931-4f10-bb0e-974a55c504f4-image.png

      I'm guessing keeping it simple now I require heating isn't so easy 🙂 Other people need use this after myself so I trying to not over complicate it. But if I need to then I will, no problem.

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • Cooling and Heating

      Hi All,

      I’m trying to put together some control logic to both cool and heat using a dead band. Currently I’m using a CMP block for cooling, this works really well. Now need to add heating to this. I was think about using two relay blocks but I’m sure there is a better way.

      Thoughts?

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • RE: Logging Bools

      Ok, thanks Jaroslav.

      I'll use a combination of the ALB and what I currently have to achieve both. This way I'll get both live HMI and logged alarms.

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • RE: Logging Bools

      Hi Jaroslav,

      That's perfect thank you, makes sense now. Is there a way I can get the alarm into the HMI. Currently I am using the "simple logger" to show strings for some alarms in the HMI. Can I link the ALB blocks to this somehow?

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • RE: PWM Output

      Hi Jaroslav,

      No, not causing an issue as such. Setting the LIN block in such a way fixes the problem and allows the fan to operate correctly.

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • PWM Output

      Hi All,

      I'm using one of the PWM outputs on the HAT to drive a small DC fan. The fan takes it's 12Vdc (red) from the HAT (HAT is powered by 12Vdc) and obviously the fans common (black) goes back to the HAT's GND. The fan has a separate control wire (yellow) which requires 25kHz and controls buy 0-100% duty cycle. But the output polarity seems to be the reverse to what I need. See a (very bad) wiring diagram attached.

      0_1570503962954_626a731e-6073-4013-83fe-7f496e2394c2-image.png

      How can I reverse the output, so it goes from 0-100% duty and not 100-0%? I have had to change the settings in the LIN block I'm using to get it to work, see image of LIN block settings.

      0_1570504258277_cf65a842-1065-4c88-9f1e-540743810688-image.png

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • Logging Bools

      Hi All,

      I was just wondering what is the best way to log bools. I have 4 or 5 alarm states that I wish to log when they are active. But I don't wish to log them when they are not. Would the TRND block be best for this or would it need to sample at a high rate creating a large file.

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • RE: HMI and Subsystem Mask

      Hi Jaroslav,

      Thank you for the help. I will give that a go and let you know what happens.

      Cheers

      Mike

      posted in REXYGEN HMI Designer
      M
      MikeyH
    • HMI and Subsystem Mask

      Hi All,

      If I have a CNR block in a subsystem, that I am using in a subsystem mask to give say a set point value. Can you still write a value to that CNR block via the HMI?

      Cheers

      Mike

      posted in REXYGEN HMI Designer
      M
      MikeyH
    • REXYGEN on ESP32

      Hi All,

      Has anyone tried, or has working Rexygen on an ESP32?

      Cheers

      Mike

      posted in General
      M
      MikeyH
    • RE: Watchdog

      Hi Jaroslav,

      That’s awesome, I will try this out during the week.

      I’ll let you now how it goes.

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • Watchdog

      Hi Team,

      How does the watchdog work on the Monarco Hat? Is it automated or something we have to enable?

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • RE: 1-WIRE Temp sensor unstable reading

      An update to the above. I'm now very sure I had a bad batch of sensors, it turns out I'm not alone. Over people have seen the same thing having bought sensors from certain websites.

      Be careful when buying 1-Wire sensors as it seems there are cheaper, not so reliable ones flooding the market.

      Cheers

      Mike

      posted in 1-Wire
      M
      MikeyH
    • RE: Analogue Inputs

      Hi Jaroslav,

      Thanks for the reply, yes this was the case. With a bit of scaling added it works fine, only with slight loss of resolution. Not enough to cause issues tough.

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • Analogue Inputs

      Hi All,

      I am using a voltage sensor, link below. When connected to the Monarco the signal voltage gets pulled down. My multimeter reads the signal voltage correctly at 2.64V. But when connected back to the hat it pulls to 1V.

      Is this due to the input impedance of the AI? It seems to work ok if I rescale it though.

      https://www.geeker.co.nz/sensors/other/voltage-sensor-0-25v.html

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • RE: Analogue Input Range

      @jaroslav_sobota no problem 🙂

      posted in Monarco HAT
      M
      MikeyH
    • RE: Analogue Input Range

      I found it in the AI specification in the back of the Monarco manual, 4.1.1 page 20.

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • String Selection for HMI simple logger

      Hi All,

      I have a HMI that uses the “simple logger” feature. I like this feature and it works well. What I’m trying to work out is a more efficient way of selecting the string messages that it logs.

      All the strings I have are alarms of some kind. But the alarms come from different places and the string selection block doesn’t really work properly for what I need. I need an alarm to be logged, but any new alarm has to shown/logged without the previous alarm needing to, or being cleared. This is where I find the string selection block fails me. Any more than 2 or 3 string options and things start to break. I’m using the binary inputs.

      Do you have any hints? 🙂

      Cheers

      Mike

      posted in REXYGEN Studio
      M
      MikeyH
    • Analogue Input Range

      Hi All,

      In the Monarco hat spec , it says the AI voltage mode range can be changed, 0-10V (range 1) or 0-5V (range 2). How is this done?

      Cheers

      Mike

      posted in Monarco HAT
      M
      MikeyH
    • RE: 1-WIRE Temp sensor unstable reading

      Hi Jaroslav,

      I only had 4 sensors, and I am using the Monarco hat. The sensor cables are all 1.5m long is a star formation.

      I have ordered more as I think I had a bad batch. I have issues with the same sensors not working after a power loss.

      I will let you know more once I have tried the new sensors.

      Cheers

      Mike

      posted in 1-Wire
      M
      MikeyH