MODBUS COMMUNICATIONS HeatNet Control V3
Page 126
MODBUS — BoilerStatus1 Flags
Header Sensor not Detected
0 = detected, 1 = not detected
Supply Sensor not Detected
0 = detected, 1 = not detected
Return Sensor not Detected
0 = detected, 1 = not detected
Outside Sensor not Detected
0 = detected, 1 = not detected
Combustion Air Damper
Obsolete –Available only on v1.x controls
Boiler Detected (at this address)
0 = not detected, 1 = detected
MODBUS — BoilerStatus2 Flags
Disabled – boiler is offline
For instance: Minimum off Time, Flow, Local Override, Calibrate etc.
0 = enabled, 1 = disabled
0 = no demand, 1 = demand (1)
Alarm
An alarm or warning condition has occurred. An attempt(s) will automatically
be made to recover and resume normal operation.
Failed
A condition has occurred under which the boiler can no longer run.
Member Error
An “Alarm” or “Failed” condition has occurred on one (or more) of the
member boilers.
Boiler Running
Main Valve is open and Modulation Delay time has expired
LWCO Interlock (Low Water Cut Off)
VFD Interlock (Variable Frequency Drive)