adccommunitymod (AutomationDirect) asked a question.
Unlatch a bit that is set by an HMI
Created Date: November 20,2013
Created By: Biederboat
**** This post has been imported from our legacy forum. Information in this post may be outdated and links contained in the post may no longer work.****
I am using an HMI (C-More) to presumably latch a bit (there's a "button " on the HMI that toggles C20 in the PLC). Can I put some logic in the PLC program that would execute a RST coil to unlatch the bit? Would it change the state of the button on the HMI (button says "Start " while it's unlatched and flashes "Stop " while it's latched. I know I could easily try it but I just have limited windows to jump in on this machine so that's why I'm asking. Thanks, BB
Created Date: November 20,2013
Created by: bcarlton
Yes, you can unlatch the bit using PLC logic and the control display on the CMore will follow that state once it has read it.
Created Date: November 21,2013
Created by: pkshaver
Yes, The HMI in toggle works like a SET. A RST in the plc will reset it.
Created Date: November 25,2013
Created by: Biederboat
Belated thanks here guys, still haven't had a chance to get in on the machine but it helps to know I can do this.
Thanks again and keep up the good work!
BB
Created Date: November 20,2013
Created by: Biederboat
I am using an HMI (C-More) to presumably latch a bit (there's a "button " on the HMI that toggles C20 in the PLC). Can I put some logic in the PLC program that would execute a RST coil to unlatch the bit? Would it change the state of the button on the HMI (button says "Start " while it's unlatched and flashes "Stop " while it's latched.
I know I could easily try it but I just have limited windows to jump in on this machine so that's why I'm asking.
Thanks,
BB