LSIS 6731001500, Руководство пользователя

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401
RS-485 Communication Features
value as possible, and to set the continuous value for MACID. If the values are set as explained above,
efficient Token Passing Configuration is possible because each Master tries to give Token to Device set
as its own (MACD+1).
7.4.4 Protocol Implementation
The following table sums the information required to implement a BACnet system. Refer to each
section of the table to implement a BACnet system properly.
Category Items Remarks
BACnet Services
I-Am (Answer to Who-Is, when
broadcast or reset after power-up)
I-Have (Answer to Who-Has)
Read Property
Write Property
Device Communication Control
Ignores Password in Device
Communication Control
Reinitialize Device
Warm/Cold Starts (Supports Password)
Start Backup, End Backup, Start Restore,
End Restore, or Abort Restore services
are NOT available.
Data Link Layer
BACnet communication card
supports an MS/TP Master Data Link
Layer Supported Standards: MS/TP Available
speed: 9600, 19200, 38400, and 76800
bps
MAC ID/Device
Object Instance
configuration Set at COM-01 Int485 ST ID (MAC ID).
The Device Object Instances are set
at COM-21 and COM-22.
MAX Master
Property Set at COM-20
(MAX Master Value).
7.4.5 Object Map