Lochinvar 1.5 - Manual (Page 7)

7
Primary Data Tables
Table Data Type Read / Write
Discrete Inputs Single Bit Read Only
Coils Single Bit Read / Write
Input Registers 16-Bit Word Read Only
Holding Registers 16 Bit Word Read / Write
Crest Boiler Memory Map
Coils
Address Description Default Unit Min. Max. Resolution
00001 Boiler Enable 0 1=ON / 0=OFF 0 1 1
00005 Tank Thermostat 0 1=ON / 0=OFF 0 1 1
Discrete Inputs
10001 Manual Reset High Limit 0 1=ON / 0=OFF 0 1 1
10002 Flow Switch 0 1=ON / 0=OFF 0 1 1
10003 Gas Pressure Switch 0 1=ON / 0=OFF 0 1 1
10004 Louver Proving Switch 0 1=ON / 0=OFF 0 1 1
10005 Blower Proving Switch 1 0 1=ON / 0=OFF 0 1 1
10006 Blocked Drain Switch 0 1=ON / 0=OFF 0 1 1
10008 Flame 1 0 1=ON / 0=OFF 0 1 1
10009 Enable 0 1=ON / 0=OFF 0 1 1
10010 Tank Thermostat 0 1=ON / 0=OFF 0 1 1
10011 Blocked Flue 0 1=ON / 0=OFF 0 1 1
10013 Blower Proving Switch 2 0 1=ON / 0=OFF 0 1 1
10021 Flue Damper Proving Switch 0 1=ON / 0=OFF 0 1 1
10023 Flame 2 0 1=ON / 0=OFF 0 1 1
10033 Run-time Contacts 0 1=ON / 0=OFF 0 1 1
10034 Alarm Contacts 0 1=ON / 0=OFF 0 1 1
10035 SH Pump 0 1=ON / 0=OFF 0 1 1
10036 DHW Pump 0 1=ON / 0=OFF 0 1 1
10038 Gas Valve 1 0 1=ON / 0=OFF 0 1 1
10039 System Pump 0 1=ON / 0=OFF 0 1 1
10044 Vent Damper Relay 0 1=ON / 0=OFF 0 1 1
10046 Gas Valve 2 0 1=ON / 0=OFF 0 1 1
10049 Blower #1 Power 0 1=ON / 0=OFF 0 1 1
10050 Blower #2 Power 0 1=ON / 0=OFF 0 1 1
10051 Spark Igniter 0 1=ON / 0=OFF 0 1 1
3
Memory Map
ModBus Instructions