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.
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
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
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
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
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
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.
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.
Cheers
Mike
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
Hi Jaroslav,
Thank you for the help. I will give that a go and let you know what happens.
Cheers
Mike
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
Hi All,
Has anyone tried, or has working Rexygen on an ESP32?
Cheers
Mike
Hi Jaroslav,
That’s awesome, I will try this out during the week.
I’ll let you now how it goes.
Cheers
Mike
Hi Team,
How does the watchdog work on the Monarco Hat? Is it automated or something we have to enable?
Cheers
Mike
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
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
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
I found it in the AI specification in the back of the Monarco manual, 4.1.1 page 20.
Cheers
Mike
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
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
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