ETC Unison Paradigm Central Control Server BACnet Interface Reference Guide - Manual (Page 32)

28 Unison Paradigm BACnet Interface Object Reference Guide
5 Timed Event Handling
The Timed Event object type is somewhat special, in that new object instances can be
created by the user. In addition, existing "Timed Event" instances may be controlled,
modified, or even deleted.
This section describes, in detail, the BACnet client's process of creating, controlling and/or
deleting Paradigm system Timed Events using BACnet.
5.1Creating a New Timed Event Instance
Step 1: Write the Timed Event "Name".
a: Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the BACnet standard property type:
"PROP_OBJECT_NAME" (decimal constant 77).
• This property is a character string data-type.
Step 2: Write the Timed Event "Override Name" or "Instance No".
a: Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the property type: "PROP_OVERRIDE_NAME".
• This property is a character string data-type
Step 3: Write the Timed Event "Space Name" or "Instance No".
a: Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the property type: "PROP_SPACE_NAME".
• This property is a character string data-type.
Step 4: Write the Timed Event "Begin Time".
a: Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the property type: "PROP_BEGIN_TIME_TYPE".
• This property is an integer data-type with an enumeration value: 0 = Real, 1
= Astronomical, 2 = Duration.
b: Select one of the following actions, depending upon the value of this property:
• If a Real Time Type:
• Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the property type: "PROP_BEGIN_TIME_HOUR". This is an
integer data-type with a value between 0 and 23.
• Then, perform a BACnet "Write Property" command on Instance Zero of the
Timed Event object, using the property type: "PROP_BEGIN_TIME_MINUTE".
This is an integer data-type with a value between 0 and 59.
• If an Astronomical Time Type:
• Perform a BACnet "Write Property" command on Instance Zero of the Timed
Event object, using the property type: "PROP_BEGIN_TIME_ASTRO". This is
an integer data-type with an enumeration value: 0 = Sunrise, 1 = Sunset.
• Then, perform a BACnet "Write Property" command on Instance Zero of the
N o t e : You may send either an Override Instance No., e.g. '321', or an Override Instance
Name.
N o t e : You may send either an existing Space Instance No., e.g. '321', or an existing
Space Instance Name.