02-05-2019 03:03 PM
Can Lookout 6.7.1 display the time that an RTU was last polled in a system? Thank you in advance for your help.
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02-05-2019 04:25 PM
Yes, by using the update data member. The update member goes low when Lookout sends a request and goes (and remains) high when it receives a reply. Lots of ways to accomplish this, one example is:
text(now(Modbus1.update), "yyyy-mm-dd hh:mm")
02-05-2019 05:19 PM
Thank you. I will look into this. If I have any issues, I may be back to ask more questions if that is okay.
02-05-2019 06:12 PM
so do I just create an expression using the example you gave me? Also, is there an easy way to manually poll a site? Thank you so much for your help.
02-06-2019 02:21 PM
Yes, an expression object would work. That would be good if you display it more than one place. I work mostly with Modbus objects but I think most if not all PLC objects behave the same. There are two polling writable data members (yellow fields) - pollrate and poll. pollrate is a time interval and poll is a discrete. A pushbutton (or any true condition) could be used to poll the device.
02-06-2019 03:00 PM
Thank you so much. you have been a real big help. You rock.
02-06-2019 03:36 PM
I hate to ask dumb questions, but by using the Poll data members, is this confirming actual radio communications to an RTU?