Hi All,

Is it possible to use both the RS485 on the Monarco HAT and also the the USB on the RPi for Modbus?

I guess this would need 2 drivers set up for both /dev/ttyAMA0 and /dev/ttyUSB0, would this work?

Cheers

Mike

Thanks Tomas,

Will the unused flag produce an error or alarm in the system log?

I’ve also removed the 0-5v option

Cheers

Mike

UPDATE!

After posting earlier I wondered if something like this would be better?

Not having the unused input flag showing an alarm might be tricky?

Cheers

Mike

Random Idea2.mdl

@RexPeter thank you for that, that is actually very useful.

Cheers

Mike

Hi All,

I have created a subsystem to scale analog inputs so you can use either 0-10V or 4-20mA. It even has a parameter to turn on a TRND block. Can this be done on the Monarco HAT given how the flags are already separate configurations? I'm building a generic logger and would like the analog input to be software configurable if possible. This way I can use either V or mA transducers and and not have to change the code, just use the HMI to configure it.

Cheers

Mike

Random Ideas.mdl

Hi Jan,

Thank you very much for the help. I will let you know how I get on. I think with what I need to do I'll create a sub system so will share it once I'm done in case it's useful to anyone.

Cheers

Mike

Hi All,

Please delete or move if not appropriate.

Has anyone here ever used/found a 10k NTC temperature sensor module with RTU RS485? I'm looking for one to use with the Monarco Hat, in this situation 1-wire sensors won't work.

I can only find one on AliExpress.

Cheers

Mike

Hi All,

I'm struggling to think of a way to combine a pulse count with a pulse duration.

I need to log/count the total amount of times a door is opened, I'm using a reed switch as the input/trigger for this, circuit open when door is open. The COUNT block would work fine for this I think. But what I'd also like to do though is count the duration of each door opening. So basically counting a pulse and it's duration. Then logging the duration against each door open count.

Any help would be appreciated.

Cheers

Mike

Hi Tomas,

I'd be interested trialing that if possible?

Regards,

Mike

Thank you Jaroslav, you learn something every day! That will help more than you know with all of my projects. especially ones with process models

Cheers

Mike