This is a bit of a royal PITA.... I am using Workplace Tech 5.72 (WPT) and Visio 2007. Job is BACNet, 12 MNB-1000's, about 55 VAVs, and a few other TAC BACNet devices. I have been connecting to the lead MNB-1000 through Ethernet (one per building is enabled for Ethernet use). I use Workplace Commissioning Tool to control the VAV's, and WPT to adjust each AHU. Throughout the entire job, the program has worked flawlessly (or as flawlessly as WPT can be).
I moved to another building, and was able to finalize one AHU (calibrating O/A, driving VAV's to max flow, etc etc.) I went to lunch. When I came back, I went to open the next AHU program (after saving and closing the first one). I added a monitor point to keep tabs on the O/A in FPM. All of a sudden, the program stopped responding. The program was acting like it was running on an EXTREMELY slow computer. Except, everything else on the computer works fine and shows no signs of slowing the computer. If you look at task manager, the VISIO.EXE process is using about 104MB of memory, but no CPU (or maybe 1% occasionally).
My harddrive was dying, or I needed a really good excuse to buy a larger drive. I reinstalled everything onto a new drive, with a fresh install of XP Pro SP3, Visio 2007 and all service packs. Go back to the job after a few days, and still the problem...
If I open the application for the AHU and connect to see live data, the program works fine. If I open Workplace Commissioning, then Visio will ground to a halt. Likewise if I open Commissioning tool, it will show all the devices on the network no problem. Open an application for a AHU, and it will bring WPT to its knees.
The control guy came out today to look at the situation, and had the same issue with his computer.
Thing is, the MNB is connected to the school's network, so you can see the entire school from from point. The only weird thing about this building is there is a computer lab that has its own network switch.
Anyone have any ideas?