ATH HEATNET KN Series, Operation Instructions Manual, Page: 132 / 144

MODBUS COMMUNICATIONS HeatNet Control REV 3.47-1
Page 132
Figure 61 MODBUS Input Variables (Read Only)
Address Name
Raw Data
Type
Scale Description Valid Values/Range
mode.
3) A calculated setpoint if running in
Outdoor Air Reset Mode
4) The 4-20mA (0-10V) setpoint.
30241 AvailableBoilers
16 bit signed
---
The maximum number of boilers available
to fire.
0 - 16
30242
BTUHigh16
32 bit unsigned
30243 BTULow16
30247 SystemReturnTemp 16 bit signed ---
The system return temperature (if
available). See BoilerStatus4 to determine
if the sensor is present.
32
– 250 °
F
30265
SystemFlowHigh16
32 bit unsigned 0.01
Boiler SystemFlow High (Upper) and Low
(Lower) 16-bit registers. To get Boiler
SystemFlow High (Upper) and Low (Lower)
16-bit registers. To get the actual
SystemFlow, the high and low 16-bit
registers must be combined (concatenated)
into a single 32-bit counter as:
SystemFlowHigh16: SystemFlowLow16
Example
SystemFlow = ((SystemFlowHigh16 *
65536) + SystemFlowLow16) * 0.01
This value is either the system flow meter
reading or the value written to the
BMSFlowRateGPM register by the BMS.
0-1500 GPM
30266 SystemFlowLow16
30269
HeatingBoilersOn 8 bit unsigned ---
The number of boilers currently running for
heating.
0
– 16
30270 DHWBoilersOn 8 bit unsigned ---
The number of boilers currently running for
DHW.
0
– 16
30271
ManualBoilersOn 8 bit unsigned ---
The number of boilers currently running
due to a local override, T1, T2, AA/High
Fire, etc.
0
– 16
30369 Boiler 1 Local Flow 16 Bit Signed .1 Boiler (1
–16)
0-3,276
30370 Boiler 2 Local Flow 16 Bit Signed .1 Boiler 01 = Master 0-3,276
30371 Boiler 3 Local Flow 16 Bit Signed .1
or “Connected Boiler”
0-3,276
30372 Boiler 4 Local Flow 16 Bit Signed .1 Local Flow Rate for Each Boiler 0-3,276
30373 Boiler 5 Local Flow 16 Bit Signed .1 0-3,276
30374 Boiler 6 Local Flow 16 Bit Signed .1 0-3,276
30375 Boiler 7 Local Flow 16 Bit Signed .1 0-3,276
30376 Boiler 8 Local Flow 16 Bit Signed .1 0-3,276
30377 Boiler 9 Local Flow 16 Bit Signed .1 0-3,276
30378 Boiler 10 Local Flow 16 Bit Signed .1 0-3,276
30379 Boiler 11 Local Flow 16 Bit Signed .1 0-3,276
30380 Boiler 12 Local Flow 16 Bit Signed .1 0-3,276
30381 Boiler 13 Local Flow 16 Bit Signed .1 0-3,276
30382 Boiler 14 Local Flow 16 Bit Signed .1 0-3,276
30383 Boiler 15 Local Flow 16 Bit Signed .1 0-3,276
30384 Boiler 16 Local Flow 16 Bit Signed .1 0-3,276