The bacnet loop no longer works correctly after upgrading to 4.500064 firmware
The action property of the loop object was reversed in prior versions. This has now been corrected in firmware version 4.500064. Direct is now Reverse and Reverse is now Direct.
If the loop was being used in prior versions you will need to correct your configuration to use this version.
An accumulating error will now get cleared when the loop object is put "out of service"