Does the hour meter transaction group still capture accurately with timer set for 1 hour?

Ignition
1

I see that milliseconds are selectable for the hour meter, but the default execution schedule is 1 second(s).

Does this mean I can set the group for executing timer 1 hour(s) and still get accurate hours every hour?

I am sorry if it is a dumb question.
I don't know how that counter works.
I didn't see it in the video or on the page for the hour meter.
If it is there, I didn't catch it.

Tried with timer set for 5 minute(s), and after 5 minutes the value did show 3 minutes of uptime when I tested 3 minutes of uptime.

2

I have retentive checked, but all my hour meters reset to 0 when I reset the Boolean to 0.

I have a boolean for running.
It sets the hour meter tags for the the machine.
However, it was 7 earlier and now it is only 1, so it reset.

image

I have a script that sets the booelean to 0 at the end of shifts.
However, my meter is never supposed to reset.

Well the reset happened 30 minutes ago for running booleans.
They toggle on and off all the time.
I did just add a machine to the transaction group today though. So maybe when I added that, the meters reset?
Do hour meters reset if the gateway goes down?

Testing, setting one to 10.

image

Moments later it broke.
image

Oh no, this hour meter is useless?
Retentive Hour Meter Resets on Group Disable]

I need an accurate hour meter from the gateway, not the plc.
I am going to use event scripting till I learn a better way.

3

So, magic?

Really, some things are not possible. This is a PLC task and Ignition's approximations will bite you in the [expletive] at some point.

2 Likes
4

Thanks, that answers my questions about the transaction group hour meter.

I am going to see if anyone knows a good non-resetting reliable hour meter.
Hour meter recommendation]

5

I normally just write PLC code to do this, and record it often enough to catch impossible discontinuities (like losing the value due to a program download).

6

I don't know how to mitigate the loss of the hour data on a download.
So I thought that a separate device would be best.

I like the mechanical rollover because then if it fails, I still have the last value.
Seems like there is a hole in the market though as I don't see a device that combines the mechanical rollover with having an output to read the value to the plc.

I thought it would be good to make that separate thread to ask about such a device that others might have found.