Laars OMNITHERM ONH1250, Assembly, Installation And Operation Instructions

Page: 42 / 136

Page 42
Modbus
Address R/W Notes Map Descriptor Name
BACnet
Data
BACnet
Object Read/Write
74 Read Lag 5 State AI 74 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
75 Read Lag 5 Firing Rate AI 75 Read Ccrrent firing rate (0-100%)
76 Read Lag 6 State AI 76 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
77 Read Lag 6 Firing Rate AI 77 Read Ccrrent firing rate (0-100%)
78 Read Lag 7 State AI 78 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
79 Read Lag 7 Firing Rate AI 79 Read
Current firing rate (0-100%)
80 Read Lead 0 State AI 80 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
81 Read Lead 0 Firing Rate AI 81 Read Current firing rate (0-100%)
82 Read Lead Firing Rate AI 82 Read
Current firing rate of the Cascade Lead (0-
100%)
83 Read Active CH Setpoint AI 83 Read
0=None
5 = Start
24 = Error Block
160 = Standby
165 = Check Safety Swtich
166 = Run
177 = Prepurge Open
181 = Parameter Block
183 = Lockout
188 = Testmode
194 = Prepurge Closed
195 = Wait for HIS Free
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
89 Read Boiler Pump Status AI 89 Read
90 Read Cascade Master Heat Demand AI 90 Read
91 Read Burner 1 Run Time AI 91 Read
i
128 Read/Write CH1 Enable/Disable AV 0 Read/Write 0 = Disable; 1 = Enable;
129 Read/Write CH1 Set Point AV 1 Read/Write
130 Read/Write CH1 P AV 2 Read/Write
131 Read/Write CH1 I AV 3 Read/Write
132 Read/Write CH1 D AV 4 Read/Write
133 Read/Write CH2 Enable/Disable AV 5 Read/Write 0 = Disable; 1 = Enable;
Read 86
Read 84
CH Set Point Source
Burner Status 1 AI 84 Read
AI 86 Read
Modbus/BACnet Memory Map (continued)
Modbus
Address R/W Notes Map Descriptor Name
BACnet
Data
BACnet
Object Read/Write
GENERIC LOCKOUT = 17
BURNER1 MAX TRIALS ERROR = 22
BURNER1 MAX FLAME LOST ERROR = 24
BURNER1 FAN SPEED ERROR = 28
NO LOCKOUT = 255
24VDC ERROR = 30
24VAC ERROR = 31
DHW PROBE ERROR = 32
SYSTEM SUPPLY PROBE ERROR = 33
SYSTEM RETURN PROBE ERROR = 34
OUTDOOR PROBE ERROR = 35
FLUE PROBE ERROR = 36
HIGH LIMIT AUTO ERROR = 41
HIGH DELTA T ERROR = 42
FAN SPEED ERROR = 43
38 Read History - DHW Demand Cycles AI 38 Read x 10
39 Read History - CH1 Demand Cycles AI 39 Read x 10
40 Read History - CH2 Demand Cycles AI 40 Read x 10
43 Read History - Cascade Demand Cycles AI 43 Read x 10
44 Read History - Burner Stage 1 Cycles AI 44 Read
x 10
48 Read History - Boiler Pump Cycles AI 48 Read x 10
49 Read History - DHW Pump Cycles AI 49 Read x 10
50 Read History - System Pump Cycles AI 50 Read x 10
51 Read History - Average Boiler Outlet Temperatur AI 51 Read °
F
52 Read History - Maximum Boiler Outlet Temperatu AI 52 Read °
F
53 Read History - Minimum Boiler Outlet Temperatu AI 53 Read
°
F
54 Read History - Boiler Average Firing Temperatur AI 54 Read
°
F
55 Read History - Boiler Maximum Firing Time AI 55 Read Hours
56 Read History - Boiler Minimum Firing Time AI 56 Read Hours
64 Read Modulation Sensor AI 64 Read
0 = None
1 = Outlet
2 = DHW
3 = System
4 = Inlet
5 = Flue
6 = System Return
65 Read Active Service AI 65 Read %
66 Read Lag 1 State AI 66 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
67 Read Lag 1 Firing Rate AI 67 Read Current firing rate (0-100%)
68 Read Lag 2 State AI 68 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
69 Read Lag 2 Firing Rate AI 69 Read Current firing rate (0-100%)
70 Read Lag 3 State AI 70 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
71 Read Lag 3 Firing Rate AI 71 Read Current firing rate (0-100%)
72 Read Lag 4 State AI 72 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
73 Read Lag 4 Firing Rate AI 73 Read Current firing rate (0-100%)
36 Read Error Code AI 36 Read
Modbus
Address R/W Notes Map Descriptor Name
BACnet
Data
BACnet
Object Read/Write
GENERIC LOCKOUT = 17
BURNER1 MAX TRIALS ERROR = 22
BURNER1 MAX FLAME LOST ERROR = 24
BURNER1 FAN SPEED ERROR = 28
NO LOCKOUT = 255
24VDC ERROR = 30
24VAC ERROR = 31
DHW PROBE ERROR = 32
SYSTEM SUPPLY PROBE ERROR = 33
SYSTEM RETURN PROBE ERROR = 34
OUTDOOR PROBE ERROR = 35
FLUE PROBE ERROR = 36
HIGH LIMIT AUTO ERROR = 41
HIGH DELTA T ERROR = 42
FAN SPEED ERROR = 43
38 Read History - DHW Demand Cycles AI 38 Read x 10
39 Read History - CH1 Demand Cycles AI 39 Read
x 10
40 Read History - CH2 Demand Cycles AI 40 Read x 10
43 Read History - Cascade Demand Cycles AI 43 Read x 10
44 Read History - Burner Stage 1 Cycles AI 44 Read x 10
48 Read History - Boiler Pump Cycles AI 48 Read x 10
49 Read History - DHW Pump Cycles AI 49 Read x 10
50 Read History - System Pump Cycles AI 50 Read
x 10
51 Read History - Average Boiler Outlet Temperatur AI 51 Read
°
F
52 Read History - Maximum Boiler Outlet Temperatu AI 52 Read °
F
53 Read History - Minimum Boiler Outlet Temperatu AI 53 Read °
F
54 Read History - Boiler Average Firing Temperatur AI 54 Read °
F
55 Read History - Boiler Maximum Firing Time AI 55 Read Hours
56 Read History - Boiler Minimum Firing Time AI 56 Read Hours
64 Read Modulation Sensor AI 64 Read
0 = None
1 = Outlet
2 = DHW
3 = System
4 = Inlet
5 = Flue
6 = System Return
65 Read Active Service AI 65 Read %
66 Read Lag 1 State AI 66 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
67 Read Lag 1 Firing Rate AI 67 Read Current firing rate (0-100%)
68 Read Lag 2 State AI 68 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
69 Read Lag 2 Firing Rate AI 69 Read
Current firing rate (0-100%)
70 Read Lag 3 State AI 70 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
71 Read Lag 3 Firing Rate AI 71 Read
Current firing rate (0-100%)
72 Read Lag 4 State AI 72 Read
0 = Not Present
1 = Not Available
2 = Available
3 = Running
4 = Locked Out
73 Read Lag 4 Firing Rate AI 73 Read Current firing rate (0-100%)
36 Read Error Code AI 36 Read
(continued on next page)
LAARS Heating Systems