Re: [Bacnet-developers] BACNet WriteProperty: Passing Boolean for ON/OFF?

[Steve K. <st...@ka...>]

Hi Andrew,

> OFF Command: C:\bacnettools\bacwp xxxx 4 1537 85 16 -1 1 0 (and it works
> fine)
> ON Command:   C:\bacnettools\bacwp xxxx 4 1537 85 16 -1 1 1 (no luck. I've
> tried using real, integer, and character string with 1 and "ACTIVE")
>
> Any thoughts or recommendations?

4=Binary Output
85=Present_Value
16= priority 16

The datatype for Binary Output present-value property is Enumerated
(9), not Boolean (1), so your WriteProperty request should have failed
with an error message.  The correct WriteProperty request at priority
16 should look like:

OFF Command: C:\bacnettools\bacwp xxxx 4 1537 85 16 -1 9 0
ON Command:   C:\bacnettools\bacwp xxxx 4 1537 85 16 -1 9 1

You can relinquish your control of priority 16 by the following:
ON Command:   C:\bacnettools\bacwp xxxx 4 1537 85 16 -1 0 0

Note that priority 16 may or may not control the thermostat, if other
network devices control the thermostat at a higher priority (i.e. 1 is
the highest priority).  You can read the priority-array property by
the following:
C:\bacnettools\bacrp xxxx 4 1537 87

Best Regards,

Steve