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MODBUS COMMUNICATIONS
HeatNet Control V3
Page 108
Figure 64
MODBUS Input Variables (Read Only)
Address
Name
Raw Data
Type
Scale
Description
Valid Values/Range
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
Figure 65 MODBUS
— BoilerStatus Flags
Bit
Description
Valid Values/Range
0
Pilot Valve
0 = closed, 1 = open
1
Blower Running
0 = off, 1 = running
2
Ignition Alarm
0 = ok, 1 = alarm
3
Valve Alarm
0 = ok, 1 = alarm
4
High Limit
0 = ok, 1 = tripped
5
Air Prove Switch
0 = open, 1 = closed
6
RESERVED (FACTORY)
7
Software Operator
0 = off, 1 = on
8
Header Sensor not Detected
0 = detected, 1 = not detected
9
Supply Sensor not Detected
0 = detected, 1 = not detected
10
Return Sensor not Detected
0 = detected, 1 = not detected
11
Outside Sensor not Detected
0 = detected, 1 = not detected
Summary of Contents for FUTERA XLF Series
Page 27: ...CONTROL METHODS HeatNet Control V3 Page 27 Figure 25 Base loading relay...
Page 67: ...WIRING CONNECTIONS HeatNet Control V3 Page 67 Figure 49 Jumper Dip Switch Locations...
Page 73: ...WIRING CONNECTIONS HeatNet Control V3 Page 73 Figure 57 Temperature sensors...