next »

[miked]

Has anyone had experience putting Viconics stats on a Delta network? How did it go?

[Zinc22]

Yes we have Miked 

At the office we have a Delta Orca station that we often use for testing purposes and it works very well. However, we do use a 3rd party company IP/MS-TP router.

Also, we did an session with Delta software and hardware at the last BTL plug-fest and it went very well.

The only issue is that the MS-TP trunk performs much better at 38.4 kbps than 76.8 kbps.

There seems to be a small difference in MS-TP speed optimization between Delta and Viconics at 76.8 kbps.

Other than that there is nothing out of the usual to report.

Any Delta folks out there care to comment ??

[Qwerty]

Hi miked,

I would also add to Zinc22's comments the following:

If there are any Viconics' objects controlled from a Delta Controller's program, make sure that
the command line is included in a DoEvery loop or a IfOnce loop, otherwise data will be written to Viconics' devices based on the Delta controller's program scan rate - which may be twice a second. That would mean that the Viconics' object would be written to every 0.5 sec. Your MSTP network will be over-flooded with datas and you will eventually lose communication with your Viconics' devices.

For example, if the the Delta controller controls the Occupancy, you may want to change Viconics' Occupancy object value ONLY IF the Delta's schedule object has changed:

IfOnce Delta_Schedule = On Then
  Viconics_Occupancy = 2 (2 being the Occupied MultiState Index Value for Viconics' Occupancy object)
Endif
IfOnce Delta_Schedule = Off Then
  Viconics_Occupancy = 3 (3 being the Unoccupied MultiState Index Value for Viconics' Occupancy object)
Endif

Or you may want to transfer this value or any other value on a DoEvery loop basis:

DoEvery 60s
  Viconics_Occ_Cool_Spt = 75
  Viconics_OCc_Heat_Spt = 72
End Do

Which controller are you connected to ? Which user-interface are you using on site ?

Hope this will help.
Let me know if you have any questions.

Q