RBI FUTERA XLF Series Control Manual
Also see for FUTERA III Series: User's information manualInstallation & operation manualInstallation and operating instructionsManual
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MODBUS COMMUNICATIONS HeatNet Control V3Page 101MODBUS CommunicationsThe Futera III/Fusion-Series control can be controlled using Modbus commands to Enable/Disable the boiler/system. Aconnection to the Console Modbus Port on the Communications board is required. The Master Boiler assumes the role ofMEMBER, RTU, 192Kb, 8 bits, Even Parity, 1 stop bit, when connected to a BMS (Building Management System).The Member Boilers should not be connected to a BMS system other than to view Read Only addresses. Refer tohttp://www.rbiwaterheaters.com/ website for greater detail on communicating with Modbus, BACnet, or LonWorks protocols.Boiler01 = The Modbus connected boiler (Master or Standalone)Boiler02 = Member 2Boiler03 = Member 3…Boiler16 = Member 16Figure 63 MODBUS Input/Output Variables (Read/Write)Address Name Raw Data Type Scale Description Valid Values/Range40001 HeatDemand 1 bit unsigned ---Heat Demand/Request. Setting the stateMember of this variable will put the boilerin heating mode.0 = no heat demand1 = heat demand40002 SetpointTimer 16 bit unsigned ---System Setpoint TimerThe system setpoint timer and systemsetpoint work in tandem to externallycontrol (i.e. a BMS - building managementsystem) the operating setpoint. Thesetpoint (countdown) timer should beloaded with a timeout value (in seconds)prior to writing the system setpoint. Whenthe timer reaches zero, the control assumesthat the BMS is no longer operating and thelocal setpoint (saved on the control) isreloaded. This is a failsafe feature used tohelp safeguard the system in case of BMSfailure. If the setpoint timer is not written,a default timeout value of 60 seconds isassumed.0 – 65535 seconds40003 Setpoint 8 bit unsigned 1.0 System Setpoint (see SetpointTimer) 40 - 220 °F40004 OAResetEnable 1 bit unsigned --- Enables/Disables outdoor air reset mode. 0 = disabled1 = enabled40005 OARSetpoint 8 bit unsigned 1.0 Outdoor air reset setpoint. Temperature atwhich boiler shuts down. 40 – 100 °F40006 OARHighWaterTemp 8 bit unsigned 1.0Boiler water temperature setpoint whenoutdoor air temperature is at the highoutdoor air temperature setpoint(OARHiAirTemp).60 – 190 °F40007 OARHighAirTemp 8 bit unsigned 1.0 High outdoor air temperature setpoint. 50 – 90 °F40008 OARLowWaterTemp 8 bit unsigned 1.0Header/Supply temperature setpoint whenoutdoor air temperature is at the lowoutdoor air temperature setpoint(OARLoAirTemp).70 – 220 °F40009 OARLowAirTemp 8 bit signed 1.0 Low outdoor air temperature setpoint. -35 – 40 °F40010 SetMonth 8 bit unsigned --- Set real time clock – month (see SetClock) 0 (January) - 11(December)40011 SetDay 8 bit unsigned --- Set real time clock – day (see SetClock) 1 – 31 |
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