Freelance IO channel status variable
I havent worked on Freelance though !!
But I can share with you the Basic concept , hope it helps.
On your IO card in hardware tree, in last , where the HWStatus is there, you allocate a variable there, of "dint" type.
And it basically work on three principle: Status OK ; Warning ; and Faulty.
You will not be able to see that variable in your IO card, when Online, but actually you can have its value and read it ,attaching it somewhere !!