Johnson Controls P2000 User Manual

24-10515-13 Rev. – A-1
Appendix
A
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2010 Johnson Controls, Inc.
NAMESPACE DEFINITIONS A
This chapter contains information about the DVR namespace definitions.
FLAGS
The following flags are used in the namespace tag tables.
Flags Meaning
A If set to autorepeat AND flags are WZ, Z is ignored
C Configured Value (persistence required)
D Decrements/Increments towards 0 until value becomes 0
R Readable
U The value is periodically scanned from device and value updated to reflect
valu
e in device. If the DVR vendor protocol does not allow the scanning of this
information, then the DVR vendor module updates the value after transmitting
the command to the AV Switch.
If updated by the vendor module the OPC st
atus information for the data item
should return UNCERTAIN rather than GOOD.
W Writable
Z Server resets this value to 0 as soon as it pr
ocesses the value written to it by
a client.
When a value in the namespace of the DVR Runtime Server changes, the class representing
the folder object checks its validity. Assuming that the new value is correct, the class
subsequently issues the required command to the appropriate vendor protocol via the vendor
neutral interface defined by DVR Vendor X Implementation class. The vendor protocol then
performs the required action and informs the initiating class when the action has been
completed. The subsequent sections list the valid values, action required and any action to be
taken by the class on command completion for each class together with other associated data.

Johnson Controls P2000 Specifications

General

Brand	Johnson Controls
Model	P2000
Category	Security System
Language	English