Modbus Memory Map Primary Data Tables; Memory Map - Lochinvar Knight 81 Instructions Manual

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ModBus Memory Map
Primary Data Tables
Table
Discrete Inputs
Coils
Input Registers
Holding Registers

Memory Map

Address
00001 Room Thermostat 1
00002 Room Thermostat 2
00003 Room Thermostat 3
00005 Tank Thermostat
10002 Flow Switch
10003 Gas Pressure Switch
10004 Louver Proving Switch
10005 Air Pressure Switch
10006 Blocked Drain Switch
10007 Auto Reset High Limit
10008 Flame
10009 Room Thermostat 1
10010 Tank Thermostat
10024 Room Thermostat 2
10033 Run-time Contacts
10034 Alarm Contacts
10035 CH Pump
10036 DHW Pump
10037 Louver Relay
10038 Gas Valve
10039 System Pump
10044 DHW Recirculation Pump
Data Type
Single Bit
Single Bit
16-Bit Word
16 Bit Word
Description
Discrete Inputs
ModBus and BACnet Communication Instructions
Read Only
Read / Write
Read Only
Read / Write
Coils
Default Unit
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
0 1=ON / 0=OFF
Read / Write
Min. Max. Resolution
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
0 1 1
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