Formula for Communication Line status and Device Status

[JW]

I remember I have seen discussions that about the V6 support formula to get Communication Line status and Device Status on the forum. But I couldn’t find it by search.

Is this a feature in V6? If yes, where can find the related info? or I just remember it wrong?

[Mikhail]

Device status is available. Each device in Communicator contains a hidden tag with the code Status
If you create a channel, specify the device and tag code (Status), the device status will be received in this channel. 0 – normal, 1 – error

Line status currently cannot be received by a channel. To implement this, there should be a channel number in the line options. But it looks ugly. We should find a better idea.

[JW]

Thanks, it’s quite convenient.
I think the device status can cover 99% of use cases.

[zzz]

Is this behavior available in 6.1.1 ? It doesn’t seem to work. I have added four Active Input channels with different data Type (double/integer), with different Code (“”, “Status”) with the same TagCode (“Status”) and different devices (2 up 2 down), all show as ‘–‘ in tableview.
I didn’t find any place to verify the channel binding status.

• This reply was modified 1 year, 5 months ago by zzz.

[Mikhail]

It should work in 6.1.x
Channel data type is empty.
Channel type is Input
Tag code is Status

I didn’t find any place to verify the channel binding status.

Yes. It’s not displayed in Communicator.

[zzz]

Thanks, indeed, data type = Empty is the missing piece.
But it still feels Integer make sense. No data should have type undefined.

[zzz]

How do I reverse the display format as you stated ? Currently it shows Normal as Off(red), Error as On(green).

I copied, modified and assigned an Off-On format as On-Off, only reversing the On and Off in Edit Format, but it still show the same thing. Possible to make 1 red 0 green ?

• This reply was modified 1 year, 5 months ago by zzz.

[zzz]

I also tried D format, its the same, I realized the formats tried before don’t make any change. I guess formats are not respected for Empty type channels ?

[Mikhail]

When data type is empty, Double is used.
Normal-Error or D format would be OK. Format affects only displaying. In any case, you should receive a value that depends on device status.

[zzz]

Could you check? At least on 6.1.1, setting any format (I tried, D, No-Yes, Device status, there is no Normal-Error format in this version’s config) won’t make any difference：

1. It’s always shown as On(green) Off(red) — which is usually ok, but reversed in logic for these special channels.

2. Only the Current col cell has values, other sharp hour cells always show --, meanwhile, clicking on the item does show trace correctly for these hours though.

• This reply was modified 1 year, 5 months ago by zzz.
• This reply was modified 1 year, 5 months ago by zzz.

[zzz]

Please ignore point #2, I don’t have hourly archive enabled for them, never mind.

[Mikhail]

If you use D format, does the value change according to the actual device status?

[Author]

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