WT-BAC-IP Gateway Installation Instructions
8
59
MS_Shoulder
Bit 10 – motion detector shoulder mode triggered by lack of motion
BI
Shoulder_On
Bit 7 – shoulder mode button pressed
BI
Override_On
Bit 6 – override mode button pressed
BI
Fan_On
Bit 2 – fan on (if applicable)
BI
Cool_On
Bit 1 – cool on (branch line pressure in cooling zone)
BI
Heat_On
Bit 0 – heat on (branch line pressure in heating zone)
BI
60
Current_Mode
The unit’s current mode:
1 – occupied; 2 – constrained float (unoccupied); 3 to 6 – reserved; 7 –
shoulder mode
AI
61
Master_SP
The master (system) setpoint specified by the energy management application;
default 70°F.
AV
62
User_SP
The user setpoint specified by pressing up/down buttons on the unit; default
70°F.
AI
69
SP_PSI
The target branch line pressure when the temperature is at setpoint value;
default 9.0 PSI; valid range 1.0 to 22.0 PSI.
AV
70
Action_Direction
Acting direction: 0 (default) – direct acting; 1 – reverse acting
AV
Gain
Gain (change in branch line pressure in response to temperature change);
default 2.0 PSI for each 1°F change; valid range 1.0 to 5.0 PSI.
AV
71
Throttle_Range
Temperature range when pressure changes in response to temperature
change; default 6.0° F; valid range 0.0 to 10.0°F.
AV
72
Unocc_PSI
Branch line pressure when unit is in unoccupied mode and within temperature
constrained float limits, in PSI.
AV
73
Low_PSI_Value
In the case where
Error Reporting Register
indicates insufficient pressure,
this register holds the maximum branch line pressure of the system at that time,
in PSI.
AI
79
Temp_Unit
The unit of temperature; 0 represents °F, and 1 represents °C. The default is
°F. Any change to this value reboots the device.
AV
MS_Grace
The grace period (number of minutes) that the unit waits for motion detection
before it goes into shoulder mode. The default is 30 minutes, and the range is
10 to 100 minutes.
If the unit detects motion while it is in shoulder mode, it comes out of shoulder
mode within 5 minutes.
Motion detection is disabled if this register is set to less than 10 minutes or if
supply pressure is zero.
AV
201
Hop_Count
The number of hops through which the device’s data is routed to reach the
MeshGate; value 65535 indicates that the device is offline.
AI
202
1st_Hop_ID_H
High byte of device ID of the first hop node
AI
1st_Hop_ID_L
Low byte of device ID of the first hop node
AI
204
RSSI
Radio received signal strength (RSSI); signed 8 bit for Modbus register;
BACnet object shows actual value.
AI
Batt_Voltage
Battery voltage level in VDC
AI
224
RF_Channel
The radio channel number used by the device
AV
510
Dev_Type
This register holds an integer value that identifies the device type in the
wireless network. This is for use by the MeshGate, not for customer
applications.
AI
Table 1: BACnet Objects of the WT-BAC-IP Gateway (Part 2 of 2)
Register
Number
Point Name
Description
BACnet
Object
Type
