Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Does float flags always return to ZERO when power off?

Created by: M111 at: 6/5/2020 12:35 PM (12 Replies)

Rating (0)

Thanks 0

Result pages:: |; 1 | 2; |

13 Entries

Entries per page: 10 | all

6/5/2020 12:35 PM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	Does float flags always return to ZERO when power off..? Mine seem it is not retain the last status when power off and on again. ------------------------------------------------------------------------------------------ Split from Organizing diagram.
	Last edited by: Jen_Moderator at: 06/05/2020 13:38:33 New subject after splitting
Suggestion To thank Quote Answer

6/5/2020 1:00 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	M111 Does float flags always return to ZERO when power off..? Mine seem it is not retain the last status when power off and on again. What do you mean by "float flags"? Analog flags? Flags in LOGO! (whether digital or analog) have no retentivity. Flags in LOGO! can't be compared with flags in real PLCs.

Suggestion To thank Quote Answer

6/5/2020 2:43 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	May I ask why you are asking this question? Maybe we can you offered another solution.

Suggestion To thank Quote Answer

6/5/2020 7:29 PM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	ixo65 May I ask why you are asking this question? Maybe we can you offered another solution. Dear IXO65 I use float flag to store status digital on or off that manage by clicking in LWE webpage. Due to limited in resources then I try to use flag as an input status that can control by clicking in customized page. It can working good but when power down, the current status of flag will be reset to LOW logic.

Suggestion To thank Quote Answer

6/5/2020 7:33 PM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	If I have memory left then I can connect a retainable logic like pulse relay. But if flag could retain its logic status then no need to use additional function block and can solve the problem of no memory left for adding more function block.

Suggestion To thank Quote Answer

6/5/2020 7:40 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	I still don't know what you mean by "float flags". But the entire VM memory area is not retentive either. You will be shown in the LOGO! not get along. The best is: Upload your LSC and your LWE Project up to the Forum and describe, what blocks you mean.

Suggestion To thank Quote Answer

6/6/2020 8:01 AM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	ixo65 I still don't know what you mean by "float flags". But the entire VM memory area is not retentive either. You will be shown in the LOGO! not get along. The best is: Upload your LSC and your LWE Project up to the Forum and describe, what blocks you mean. Float flag is the flag that no connection to it. No connection to input and output of the flag then I call it float flag. It is digital flag.

Suggestion To thank Quote Answer

6/6/2020 8:03 AM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	But it can be read the float flag status by other LOGO through network input.

Suggestion To thank Quote Answer

6/6/2020 8:07 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	I'm sorry, but I don't understand what you're talking about. All data that is transmitted via the network is not retentive.

Suggestion To thank Quote Answer

6/6/2020 8:11 AM	Rate (0)
M111 Bronze Member Joined: 8/2/2018 Last visit: 11/11/2023 Posts: 297 Rating: (5)	Actually I got answer that the float flag will reset to low logic when power off LOGO. So no problem to be asked more.

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Related topics by keywords:

Follow us on