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** Note: 1. Changing these values needs to unlock modification for communication parameters in advance. Please refer to the
parameter LOC(Lock, AV17) for details.
2. Device instance number = “devH” *1000 + “devL” = 0~4194302. ex. If “devH” is 100 and devL” is 001then the Device
instance number = 100001.
Lock Function Setup and Examples
The 16-bit binary encoded decimal register accessed through
Lock
[AV17] BACnet
object and LOC engineering menu item is used to enable/disable features in the
thermostat. The first 10 bits are used (bit 0 ~ bit 9), bits 10~15 are reserved/unused.
Bits are represented by their decimal values and are added or subtracted to toggle
from “0” to “1”. Add a bit’s decimal value to toggle to “1” or subtract a bit’s decimal
value to toggle to “0”. See table below.
4.4
BACnet Objects and Network Configuration
Transmission types
•
Physical layer: EIA-485
•
Protocol: BACnet MS/TP
•
Baud rate: 38400 bps (default). MAC address: 1 (default)
•
Device Instance: 700001 (default)
Initial Configuration
All configuration parameters are settable through use of the buttons on thermostat by entering the
Engineer Menu
,
or once installed on the BACnet network, configuration can also be altered using BACnet commands. Network
command-based configuration can also be accomplished using a Wi-Fi enabled laptop/computer/tablet/smart
phone and Contemporary Controls’ free
BACnet Object Table BAST-421C-B2
Object name
Type & Instance
Object Property
(Readable/Writable)
Range
BACnet Thermostat
Device 700001
Model Name (R)
788C
Application Software Version (R)
Aug 6 2021
Object Identifier (R)
Object Name (R/W)
32 characters (max.)