MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com

REV 1.1
FIII SERIES CONTROL
Modbus Input (Read Only) Registers
Address Data Type Description Valid Values/Range
0 Unsigned Boilers Running 0 – 16
1 Modulation (% BTU Load) 0 – 100
2 Header / System Temperature 32 – 250 °F
3 Supply Temperature 32 – 250 °F
4 Return Temperature 32 – 250 °F
5 Outside Air Temperature -40 – 250 °F
6 Signed Spare Input 1 -32768 to 32767
7 Signed Spare Input 2 -32768 to 32767
8 Unsigned Clock – Month 0 – 11
9 Unsigned Clock – Day 1 – 31
10 Unsigned Clock – Year 0 – 99
11 Unsigned Clock – Hours 0 – 23
12 Unsigned Clock – Minutes 0 – 59
13 Unsigned Clock – Seconds 0 – 59
14 Unsigned Clock – Day of Week 1 – Monday
7 – Sunday
15 – 46 Unsigned Boilers 1 – 16 status flag (32-bit) registers. The upper
16-bits of each 32-bit register is stored at odd
numbered addresses 15 – 45. The lower 16-bits of each
32-bit register is stored at even numbered addresses 16
– 46.
See the Boiler Status
Flags Table Below
47 – 78 Unsigned Boilers 1 – 16 runtime (32-bit) registers. The upper
16-bits of each 32-bit register is stored at odd
numbered addresses 47 – 77. The lower 16-bits of each
32-bit register is stored at even numbered addresses 48
– 78.
0 – 4294967295
seconds
When the upper and lower registers are combined they
form a 32-bit unsigned integer that is the number of
seconds that the boiler has been running. For instance:
(((Register 29) * 65536) + Register 30) = Boiler 1
runtime in seconds.
Boiler 1 is the master boiler. Boilers 2 – 16 are
member boilers.
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