06-13-2019 03:44 AM
Dear friends of LabView,
i am trying to control 2 MFCs with a MKS PR4000 using the driver provided by MKS. Setting a setpoint works fine, however when i try to read out the actual flow i get the command as a response (?AV1<CR> -> ?AV1). Does anyone have an idea what is going on?
Regards,
Phillip
Solved! Go to Solution.
06-13-2019 05:12 AM
That should be in the manual, specifically in the communication chapter.
Some devices echo the command if it's incorrect (again, better check the spec). If a working command doesn't echo, that might be what's happening.
I'd have a look, but the manufacturer makes me register (*sigh*).
06-13-2019 05:17 AM
Here is the manual. In case of an error it is supposed to give an error code not echo the command as far as i see it.
06-13-2019 06:50 AM
Can you look in the driver VI?
Who made the driver? They should know...
06-14-2019 06:04 AM
Te Driver is from the 90s and very simple. When i send the command via 232analyzer i get the same result. So never mind its a device issue. Thanks for everyones help tho.
06-14-2019 07:48 AM
+1 for keeping us informed and posting\accepting a solution.
06-17-2019 03:35 AM
Thanks mate.
06-22-2020 02:17 PM
I would drop the question mark (AV1[cr] )but would use it as shown when asking value of setpt.