1/4/2021 10:50 AM | |
Joined: 4/9/2009 Last visit: 6/25/2024 Posts: 66 Rating: (1) |
Hi guys, I have to implement some software selector (on/off) retentive that should be change by LOGO internal Display. For now I’m using only the simulator because I dont have real hardware on the desk. My idea (see attachement) is to use a relay impuls current (with retentive option actived) for each selector. As trigger I use the cursor key left (C4) checking the page now activated. For changing pages I have use 5 counters activated with Up and Down LOGO! Cursor (C1 and C2). Is the best way in your opinion or there are other methods more easy without using the Cursor key? Reading LOGO documentation it’s seems that cursor key merker (C) are enabled only after the pressing of ESC but I also read that up ad down cursor are also active without the ESC for changing between all the page programmed in order of priority. But in this case if the operator change page using the cursor key without ESC my program will lost the control of page and operator can change selector value of page not now displayed. Any idea? AttachmentTest Bit Ritentivo.zip (166 Downloads) |
Last edited by: roberto.zeni at: 01/04/2021 14:38:27 |
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1/4/2021 3:31 PM | |
Joined: 3/30/2020 Last visit: 9/20/2024 Posts: 4777 Rating: (981) |
Hello Roberto. Using the cursor key is a bad idea. This disadvantage of the cursor keys is not clear from the simulation. The cursor keys can only be used in a very specific screen page -- as already mentioned by ixo65. See attached document .. it is page 9/9. Placing a parameter in the message text object makes it possible for a user to make adjustments to that parameter (T&Cs). The interfacing on how (which keys to press) that is done is not coded. Have a look at the LOGO manual, it will save you time in the long run. My suggestion (based on your other recent posts) -> Kind regards. Attachmentstart-menu.pdf (181 Downloads) |
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1/4/2021 8:46 PM | |
Joined: 12/18/2014 Last visit: 9/21/2024 Posts: 33807 Rating: (4200)
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Or do you mean a softkey? |
1/5/2021 8:13 AM | |
Joined: 4/9/2009 Last visit: 6/25/2024 Posts: 66 Rating: (1) |
Hi, as you can see from the attachment the system already seems to work (pages are changed by I1 and I2 and selector state is changed by C4 cursor merker). In this logic we have reached the goal of managing stable selectors with retentive values that can be modified from the LOGO! display. But I don't like the fact to use C4 to change the current value of the selector because its use is strictly linked to the activated page and if, for example, in the system logic there were also alarm pages that overlap the current one, the operator could use C4 which would change the value of the selector of a really hidden page. My question is: - Is it possible to use another mode other than the cursor keys (C4) to change the value of the selector in the LOGO! display so that it becomes independent from the page currently activated? Clearly, always maintaining the retentivity of the selectors. Thanks and Best Regards Attachment_Test Bit Ritentivo.zip (154 Downloads) |
1/5/2021 9:38 AM | |
Joined: 12/18/2014 Last visit: 9/21/2024 Posts: 33807 Rating: (4200)
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You only want to know if is it possible to active the trigger of the pulse relays with another function instead of the cursorkey C4? You can use a softkey. This can be parameterized as a switch or button. Retentivity can also be activated. The softkey is operated via the LOGO! display. To do this, it must be called up in a message text. To operate: Select the corresponding message text with I1 or I2. Then press the ESC key until a black bar appears on the softkey in the message text. Then press the OK button. The black bar is now flashing. Use the cursor up (or down) to select the change in status, the text changes from OFF to ON. Press the OK key again, the softkey emits a pulse and the status display shows OFF again. Press the ESC key again to exit the mode. See attachment ... Attachment_Test Bit Ritentivo_V2.zip (160 Downloads) |
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