Hi Nicolai,

this is the main "loop":


private void PollReader(object state)
{
_pollingTimer.Change(Timeout.Infinite, Timeout.Infinite);
try
{
lock (_lock)
{
byte readerAddress = 0x00; // Reader address

byte sequenceNumber = _sequenceNumber;
_sequenceNumber = (byte)((_sequenceNumber < 7 ...

Hi all,

back with a new problem.
I have a service written in C# that reads RS-485 inputs from a UHF receiver.
It is using OSDP protocol, so I am sending Poll frames and reading the subsequent replies.

The point is: if I am using Windows and my PC (AMD Ryzen processor), connected with a USB/RS485 ...

I wanted to thank you Dirk, everything runs fine now!

Thank you for the answer.

I will dig and try to understand if and how this could work in C#.

Meanhwhile..... I can't also find a good guide or video or doc, on how to enable and use the digital in even on Node-Red.

Can you help me pointing out to something viable?

Hi everybody,

first post here.
I would greatly appreciate if someone could help me understand where I can find resources to read, addressing the preparation and usage of the digital in of a Connect 4.

In particular I would like to use the in under Linux, in a C# application.

Thanks guys!!!
Gabriele

Thanks for the info!

I tried, and even applied directly 24V, but in node I can't see any change.
I also added a MIO module, using all the four digital in... nope.

Do I have to configure something in order to activate the input reading?
I tried to attach 24V directly... but nothing happens in debug ...

Hello everybody,

I tried to find an answer to this question in the forum, but no luck.
I mean... probably this is a very silly question: isn't in Connect 4 a digital in?

In the bottom left, pin #3, the website says it's a digital in, but I can't find it in NodeRed.

What I am missing????

Thanks ...