Laars OMNITHERM ONH1250 Assembly, Installation And Operation Instructions page 42

53 Read History - Minimum Boiler Outlet Temperatu
54 Read History - Boiler Average Firing Temperatur
55 Read History - Boiler Maximum Firing Time
56 Read History - Boiler Minimum Firing Time
Page 42
Modbus/BACnet Memory Map (continued)
64 Read Modulation Sensor
Modbus
Address R/W
65 Read Active Service
66 Read Lag 1 State
67 Read Lag 1 Firing Rate
68 Read Lag 2 State
36 Read Error Code
69 Read Lag 2 Firing Rate
70 Read Lag 3 State
38 Read History - DHW Demand Cycles
39 Read History - CH1 Demand Cycles
40 Read History - CH2 Demand Cycles
71 Read Lag 3 Firing Rate
43 Read History - Cascade Demand Cycles
44 Read History - Burner Stage 1 Cycles
48 Read History - Boiler Pump Cycles
72 Read Lag 4 State
49 Read History - DHW Pump Cycles
50 Read History - System Pump Cycles
Modbus
73 Read Lag 4 Firing Rate
Address 51 Read R/W History - Average Boiler Outlet Temperatur
52 Read History - Maximum Boiler Outlet Temperatu
53 Read History - Minimum Boiler Outlet Temperatu
74 Read Lag 5 State
54 Read History - Boiler Average Firing Temperatur
55 Read History - Boiler Maximum Firing Time
56 Read History - Boiler Minimum Firing Time
75 Read Lag 5 Firing Rate
76 Read Lag 6 State
64 Read Modulation Sensor
77 Read Lag 6 Firing Rate
65 Read Active Service
78 Read Lag 7 State
66 Read Lag 1 State
79 Read Lag 7 Firing Rate
67 Read Lag 1 Firing Rate
80 Read Lead 0 State
81 Read Lead 0 Firing Rate
68 Read Lag 2 State
82 Read Lead Firing Rate
69 83 Read Read Active CH Setpoint Lag 2 Firing Rate
70 Read Lag 3 State
71 Read Lag 3 Firing Rate
72 Read Lag 4 State
84 Read Burner Status 1
73 Read Lag 4 Firing Rate
(continued on next page)
86 Read CH Set Point Source
Map Descriptor Name
Map Descriptor Name
AI 53 Read
AI 54 Read
AI 55 Read
AI 56 Read
AI 64 Read
BACnet BACnet
Data Object Read/Write
AI 65 Read
AI 66 Read
AI 67 Read
AI 68 Read
AI 36 Read
AI 69 Read
AI 70 Read
AI 38 Read
AI 39 Read
AI 40 Read
AI 71 Read
AI 43 Read
AI 44 Read
AI 48 Read
AI 72 Read
AI 49 Read
AI 50 Read
BACnet BACnet
AI 73 Read
Data AI Object 51 Read/Write Read
AI 52 Read
AI 53 Read
AI 74 Read
AI 54 Read
AI 55 Read
AI 56 Read
AI 75 Read
AI 76 Read
AI 64 Read
AI 77 Read
AI 65 Read
AI 78 Read
AI 66 Read
AI 79 Read
AI 67 Read
AI 80 Read
AI 81 Read
AI 68 Read
AI 82 Read
AI AI 83 69 Read Read
AI 70 Read
AI 71 Read
AI 72 Read
AI 84 Read
AI 73 Read
AI 86 Read
°
F
°
F
Hours
LAARS Heating Systems
Hours
0 = None
1 = Outlet
2 = DHW
3 = System
4 = Inlet
5 = Flue
Notes
6 = System Return
GENERIC LOCKOUT = 17
%
BURNER1 MAX TRIALS ERROR = 22
0 = Not Present
BURNER1 MAX FLAME LOST ERROR = 24 1 = Not Available
2 = Available
BURNER1 FAN SPEED ERROR = 28
3 = Running
NO LOCKOUT = 255
4 = Locked Out
24VDC ERROR = 30
Current firing rate (0-100%)
24VAC ERROR = 31
0 = Not Present
DHW PROBE ERROR = 32
1 = Not Available
SYSTEM SUPPLY PROBE ERROR = 33
2 = Available
SYSTEM RETURN PROBE ERROR = 34
3 = Running
OUTDOOR PROBE ERROR = 35
4 = Locked Out
FLUE PROBE ERROR = 36
Current firing rate (0-100%)
HIGH LIMIT AUTO ERROR = 41
0 = Not Present
HIGH DELTA T ERROR = 42
1 = Not Available
FAN SPEED ERROR = 43
2 = Available
x 10
3 = Running
x 10
4 = Locked Out
x 10
Current firing rate (0-100%)
x 10
0 = Not Present
x 10
1 = Not Available
x 10
2 = Available
x 10
3 = Running
x 10 4 = Locked Out
Current firing rate (0-100%)
° Notes
F
° 0 = Not Present
F
1 = Not Available
°
F
2 = Available
°
F
3 = Running
Hours
4 = Locked Out
Hours
Ccrrent firing rate (0-100%)
0 = None
0 = Not Present
1 = Outlet
1 = Not Available
2 = DHW
2 = Available
3 = System 3 = Running
4 = Locked Out
4 = Inlet
Ccrrent firing rate (0-100%)
5 = Flue
0 = Not Present
6 = System Return
1 = Not Available
%
2 = Available
0 = Not Present
3 = Running
1 = Not Available
4 = Locked Out
2 = Available
Current firing rate (0-100%)
3 = Running
0 = Not Present
4 = Locked Out
1 = Not Available
Current firing rate (0-100%)
2 = Available
3 = Running
0 = Not Present
4 = Locked Out
1 = Not Available
Current firing rate (0-100%)
2 = Available
Current firing rate of the Cascade Lead (0-
3 = Running
100%)
4 = Locked Out
Current firing rate (0-100%)
0 = Not Present
0=None
1 = Not Available
5 = Start
2 = Available
24 = Error Block
3 = Running
160 = Standby
4 = Locked Out
165 = Check Safety Swtich
Current firing rate (0-100%)
166 = Run
0 = Not Present
177 = Prepurge Open
1 = Not Available
181 = Parameter Block
2 = Available
183 = Lockout
3 = Running
188 = Testmode
4 = Locked Out 194 = Prepurge Closed
195 = Wait for HIS Free
Current firing rate (0-100%)
196 = HIS Preheat/Prespark
200 = Verify Primary SF
217 = interpurge
241 = Postpurge
245 = Trial for Ignition
250 = Trial for Ignition Main
52=Post Purge
0 = no CH source
1 = CH1
2 = CH2
5 = External Demand