Operating Instructions

Communication via RS485
5.5 Communication via BACnet MS/TP - only CU230P-2 HVAC / BT
Fieldbuses
152 Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
The inverter can simultaneously process up to 32 SubscribeCOV services. These can all
refer to the same object instances - or different object instances.
SubscribeCOV monitors the property changes of the following objects:
● Analog Input (AIxx),
● Analog Output (AOxx),
● Analog Value (AVxx),
● Binary Value (BVxx) and
● Multi-state Input (MSIxx)
Note
SubscribeCOV services are not retentive; i.e., when restarting the CU the master must
reinitiate SubscribeCOV
services.
Code numbers of the object types supported in BACnet
Object type
Code number for BACnet
object type
Object type
Code number for BACnet
object type
Device Object
8
Analog Output Object
1
Binary Input Object
3
Analog Value Object
2
Binary Output Object
4
Multi-State Input Object
13
Binary Value Object
5
Octet String Values
47
Analog Input Object
0
Object properties of the "Device" object type
• Object_Identifier • Application_Software_Version • APDU_Timeout
• Object_Name • Protocol_Version • Number_Of_APDU_Retries
• Object_Type • Protocol_Revision • Max Master
• System_Status • Protocol_Services_Supported • Max Info Frames
• Vendor_Name • Protocol_Object_Types_Supported • Device Address Binding
• Vendor_Identifier • Object_List • Database Revision
• Model_Name • Max_APDU_Length_Accepted
1)
• Firmware_Revision • Segmentation_Supported
2)
1)
Length = 480,
2)
not supported