# Event Attributes

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Viewing 11 posts - 1 through 11 (of 11 total)
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• #10867
victorlam
Participant

Hello,
May I know the definition on the following item at the Event section as below:-

Lower Alarm limit
Lower Limit
Upper Limit
Upper ALarm limit

Any difference on alarm without alarm limit here?
What is the relationship between them?

Can I set 10, 50, 100, 500? Any criteria here?

Write Event (I guess Event is activated here)
Event Sound (I guess that Event trigger then has sound)
Event on change (I guess event will be triggered if channel value is changed)
Event on undefined (Event is triggered when channel value is updated but no defined value)

Then my question is where can I define or set up the value for the trigger?

BTW, I see the acknowledged icon at the Webstation if I entered some value for upper limit?

#10868
victorlam
Participant

Hello,

I have further tested late evening here and observed as follows:-

Upper limit 10
Upper Alarm limit 50

If the channel value is 12, then there is acknowledge request and sound with low continuous tone.
If the channel value is 60, then there is acknowledge request and sound with high continuous tone.

Now my channel values will be 0, 1, 2, 3 (or in binary 00, 01, 10 and 11).
00 is fine and safe. value =0
01 is alarm and not safe. value =1
10 is another alarm (break) and not safe to use. value = 2
11 is critical alarm (leak and break). Value = 3

How can I get the notification trigger if I get the value of 01 or numerical value of 1? I try to set upper limit as 1 and upper alarm limit as 1. But there is no alarm that can be trigger when the received value is 1. How can I achieve the alarm trigger if the value received is one (1)?
Or if I suggest to set up a formula, for example multiply by 10, then I add a new input channel number and set the upper limit as 9. Once there is trigger of value 10, then the alarm will be worked.

Or I can set an expression eg =1 at the upper alarm limit. If this can be done, it will be a good solution to see that.

#10869
victorlam
Participant

Or can upper limit and upper alarm value can support the value of 0 here?

#10876
victorlam
Participant

Upper limit, upper alarm limit, lower limit and lower alarm limit did not support zero (0) value here. Value of register 30001 is one, there is no notification to be triggered. I believe all limits value need to be greater than zero.

#10878
JW
Participant

the alarms limit settings is only best for value alarms by threholds.

for multiples states, e.g.
00 is fine and safe. value =0
01 is alarm and not safe. value =1
10 is another alarm (break) and not safe to use. value = 2
11 is critical alarm (leak and break). Value = 3

create a “unit” in the “Units” table, e.g.
name: mystates; sign: Safe;Not Safe;Break;Leak and Break

for the input channel of state, set foramt to Enum text, check write event and event on change. leave the alarm settings empty.

#10887
victorlam
Participant

Hello,

Thanks for the reply. I follow the advice and show with Safe only. Kindly advise if you can provide the steps in more detail.

1. Is semicolon in unit Mystates that can include 4 states here
2. Where can I define the condition for 0, 1, 2 and 3 at the event?
3. Alarm settings empty refers no value for lower limits lower alarm limits higher limits higher alarm limits?

Thanks for the support.

#10890
victorlam
Participant

My request is to have the sound alert based on the value of the register

0 – No sound

#10897
Mikhail
Moderator

Hi,
As a beginning you should make Notification plugin work.

#10900
victorlam
Participant

Actually I have successfully installed the plug in and heard with sound before. But I forgot to capture the screen shots. May I have further advice support on this?

#10905
victorlam
Participant

Hello JW,