LabJack: UE9 with Profilab 4.0
Verfasst: Donnerstag 21. Januar 2010, 22:58
Hello Everybody,
I am working on a system that uses UE9. The system has been programmed using Profilab Expert. The source file for this project is not available. We are running the system using the .exe file given to us. This set-up was done a long time ago and now we are ready to make changes due to the break throughs in our research. As the source code is not available, I resorted to going back and coding everything from the scratch.
All i am trying to do in STEP 1 is to just read out the values of the Analog inputs (AIN0-AIN13). So i shut down the running system and unhooked the other software from the system. I connected my laptop containing my new Profilab .exe file to only read out the Analog inputs. There are about 6 pumps connected to this system. For some unknown reason, all the pumps start when i run this program. I debugged the program completely and made sure that all the digital i-os are disabled and still some value is being fed to the pumps and they start up.
As i am trying to reverse engineer this already built system, I am terribly confused about what could cause the pumps to start by themselves. This is a very unsafe operating condition and I plan not to test on this anymore as more than twice it cut off the communication and caused the system to shut down.
Does the Labjack possess default HIGH state for the digital ios? I tried adding an inverter and shutting all the pumps on start up. Yet, the pumps started up.
Please advise!
Thanks!
I am working on a system that uses UE9. The system has been programmed using Profilab Expert. The source file for this project is not available. We are running the system using the .exe file given to us. This set-up was done a long time ago and now we are ready to make changes due to the break throughs in our research. As the source code is not available, I resorted to going back and coding everything from the scratch.
All i am trying to do in STEP 1 is to just read out the values of the Analog inputs (AIN0-AIN13). So i shut down the running system and unhooked the other software from the system. I connected my laptop containing my new Profilab .exe file to only read out the Analog inputs. There are about 6 pumps connected to this system. For some unknown reason, all the pumps start when i run this program. I debugged the program completely and made sure that all the digital i-os are disabled and still some value is being fed to the pumps and they start up.
As i am trying to reverse engineer this already built system, I am terribly confused about what could cause the pumps to start by themselves. This is a very unsafe operating condition and I plan not to test on this anymore as more than twice it cut off the communication and caused the system to shut down.
Does the Labjack possess default HIGH state for the digital ios? I tried adding an inverter and shutting all the pumps on start up. Yet, the pumps started up.
Please advise!
Thanks!