ProtoNode FPC-N34 & FPC-N35 User Manual
APPENDIX B: EQUIPMENT MONITOR AND CONTROL POINT DEFINITIONS
OMM-0150_B
• 5/20/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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Appendix B-5 Table 3:
AM
Dependent Boiler Parameters
Holding
Register
Access
Parameter Name
Automatic
Conversion
Range
R
W
117 0075
X
-
Firing Rate
V
0..100%
118 0076
X
-
Min Firing Rate
0..100%
119 0077
X
-
Flame current
V
0..x uA
120 0078
X
-
Water pressure
V
Depending on units 0..x bar/psi
121 0079
X
-
Analog in
V
0..10,0V
122 007A
X
-
Analog out
V
0..10,0V
123 007B
X
-
Information:
(optionally implemented)
-
Bit0: On/Off - Flame Signal
Bit1: Ok/Nok - Water level
Bit2: Ok/Nok - Low gas pressure
Bit3: Ok/Nok - High gas
pressure
Bit4: On/Off - Air pressure
Bit5: Ok/Nok - Blocked flue
Bit6: On/Off - Air damper Bit7:
124 007C
X
-
CH pump
V
0/100 or 0..100%
125 007D
X
-
DHW pump
V
0/100 or 0..100%
126 007E
X
-
Ignition count OK
-
0..65536, resolution 16
127 007F
X
-
Ignition count Failed
-
0..65536, resolution 1
128 0080
X
-
Flame count Failed
-
0..65536, resolution 1
129 0081
X
-
Burner High hours / CH
hours
-
0..65536 hours
130 0082
X
-
Burner Med hours / DHW
hours
-
0..65536 hours
131 0083
X
-
Burner Low hours
-
0..65536 hours
199 00C7
-
-
reserved
-
-
NOTES
:
1. Writing to a “write-able” point of an AM Series boiler or heater is a two-step process. First the
“Control Register” must be written with a 1 (bit 0 = 1), and then the desired register can be
written.
2. A controller may also be reset after a lock out error by setting bit 14 of the Control Register.
3. When no Modbus communication (reading or writing) is sensed for more than 4.0 seconds,
the Control Register bits will be reset. The bits will also be reset when undefined bits (i.e. other
than bits 0 and 14) are set.
CAUTION!
Writing of parameters (registers) with a different value is limited to 10,000 times. All
(CH, DHW) setpoints and parameters are for preset only. They can be changed with
an average of two changes per day, but are NOT to be used for dynamic
temperature control.
