Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.
Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
| point | address (0-based) | type | scale | unit |
|---|---|---|---|---|
| Chilled Water Setpoint | 9 | F32BE | 1 | Degrees Fahrenhe |
| Active Chilled Water Setpoint | 10 | F32BE | 1 | Degrees Fahrenhe |
| Demand Limit Setpoint | 11 | F32BE | 1 | Percent |
| Evaporator Entering Water Temperature | 12 | F32BE | 1 | Degrees Fahrenhe |
| Evaporator Leaving Water Temperature | 14 | F32BE | 1 | Degrees Fahrenhe |
| Calculated Chiller Capacity | 16 | F32BE | 1 | Tons of Refriger |
| Active Demand Limit Setpoint | 18 | F32BE | 1 | Percent |
| Unit Power Consumption | 20 | F32BE | 1 | Kilowatts |
| Outdoor Air Temperature | 24 | F32BE | 1 | Degrees Fahrenhe |
| Evaporator Refrigerant Pressure Circuit 1 | 26 | F32BE | 1 | Pound Force per |
| Condenser Refrigerant Pressure Circuit 1 | 28 | F32BE | 1 | Pound Force per |
| Differential Refrigerant Pressure Circuit 1 | 30 | F32BE | 1 | Pound Force per |
| Evaporator Saturated Refrigerant Temperature Circuit 1 | 32 | F32BE | 1 | Degrees Fahrenhe |
| Condenser Saturated Refrigerant Temperature Circuit 1 | 34 | F32BE | 1 | Degrees Fahrenhe |
| Evaporator Refrigerant Pressure Circuit 2 | 36 | F32BE | 1 | Pound Force per |
| Condenser Refrigerant Pressure Circuit 2 | 38 | F32BE | 1 | Pound Force per |
| Differential Refrigerant Pressure Circuit 2 | 40 | F32BE | 1 | Pound Force per |
| Evaporator Saturated Refrigerant Temperature Circuit 2 | 42 | F32BE | 1 | Degrees Fahrenhe |
| Condenser Saturated Refrigerant Temperature Circuit 2 | 44 | F32BE | 1 | Degrees Fahrenhe |
| Refrigerant Discharge Temperature - Compressor 1A | 46 | F32BE | 1 | Degrees Fahrenhe |
| Oil Pressure - Compressor 1A | 48 | F32BE | 1 | Pound Force per |
| Refrigerant Discharge Temperature - Compressor 2A | 50 | F32BE | 1 | Degrees Fahrenhe |
| Oil Pressure - Compressor 2A | 52 | F32BE | 1 | Pound Force per |
| Air Flow Percentage Circuit 1 | 54 | F32BE | 1 | Percent |
| Air Flow Percentage Circuit 2 | 56 | F32BE | 1 | Percent |
| Starts - Compressor 1A | 58 | F32BE | 1 | No Units |
| Run Time - Compressor 1A | 60 | F32BE | 1 | Hours |
| Compressor 1A Speed Status | 62 | F32BE | 1 | Percent |
| Motor Winding Temperature 1 Circuit 1 | 64 | F32BE | 1 | Degrees Fahrenhe |
| Motor Winding Temperature 2 Circuit 1 | 66 | F32BE | 1 | Degrees Fahrenhe |
| Drive Motor Current U RLA Compressor 1A | 68 | F32BE | 1 | Percent |
| Drive Motor Current V RLA Compressor 1A | 70 | F32BE | 1 | Percent |
| Drive Motor Current W RLA Compressor 1A | 72 | F32BE | 1 | Percent |
| Drive Motor Average Current RLA Compressor 1A | 74 | F32BE | 1 | Percent |
| Drive Motor Current U Compressor 1A | 76 | F32BE | 1 | Amps |
| Drive Motor Current V Compressor 1A | 78 | F32BE | 1 | Amps |
| Drive Motor Current W Compressor 1A | 80 | F32BE | 1 | Amps |
| Drive Motor Voltage UV Circuit 1 | 82 | F32BE | 1 | Volts |
| Drive Motor Voltage VW Circuit 1 | 84 | F32BE | 1 | Volts |
| Drive Motor Voltage WU Circuit 1 | 86 | F32BE | 1 | Volts |
| Drive Motor Average Voltage Circuit 1 | 88 | F32BE | 1 | Volts |
| Drive DC Bus Voltage Circuit 1 | 90 | F32BE | 1 | Volts |
| Drive Output Power Circuit 1 | 92 | F32BE | 1 | Kilowatts |
| Drive Input Power Circuit 1 | 94 | F32BE | 1 | Kilowatts |
| Drive Line Average Voltage Circuit 1 | 96 | F32BE | 1 | Volts |
| Drive Average Line Current Circuit 1 | 98 | F32BE | 1 | Amps |
| Drive Line Frequency Circuit 1 | 100 | F32BE | 1 | feet per second |
| AFD Frequency Circuit 1 | 102 | F32BE | 1 | feet per second |
| AFD Transistor Temperature Circuit 1 | 104 | F32BE | 1 | Degrees Fahrenhe |
| Drive Inverter Base Temperature Circuit 1 | 106 | F32BE | 1 | Degrees Fahrenhe |
| Drive Rectifier Base Temperature Circuit 1 | 108 | F32BE | 1 | Degrees Fahrenhe |
| Starts - Compressor 2A | 110 | F32BE | 1 | No Units |
| Run Time - Compressor 2A | 112 | F32BE | 1 | No Units |
| Compressor 2A Speed Status | 114 | F32BE | 1 | Percent |
| Motor Winding Temperature 1 Circuit 2 | 116 | F32BE | 1 | Degrees Fahrenhe |
| Motor Winding Temperature 2 Circuit 2 | 118 | F32BE | 1 | Degrees Fahrenhe |
| Drive Motor Current U RLA Compressor 2A | 120 | F32BE | 1 | Percent |
| Drive Motor Current V RLA Compressor 2A | 122 | F32BE | 1 | Percent |
| Drive Motor Current W RLA Compressor 2A | 124 | F32BE | 1 | Percent |
| Drive Motor Average Current RLA Compressor 2A | 126 | F32BE | 1 | Percent |
| Drive Motor Current U Compressor 2A | 128 | F32BE | 1 | Amps |
| Drive Motor Current V Compressor 2A | 130 | F32BE | 1 | Amps |
| Drive Motor Current W Compressor 2A | 132 | F32BE | 1 | Amps |
| Drive Motor Voltage UV Circuit 2 | 134 | F32BE | 1 | Volts |
| Drive Motor Voltage VW Circuit 2 | 136 | F32BE | 1 | Volts |
| Drive Motor Voltage WU Circuit 2 | 138 | F32BE | 1 | Volts |
| Drive Motor Average Voltage Circuit 2 | 140 | F32BE | 1 | Volts |
| Drive DC Bus Voltage Circuit 2 | 142 | F32BE | 1 | Volts |
| Drive Output Power Circuit 2 | 144 | F32BE | 1 | Kilowatts |
| Drive Input Power Circuit 2 | 146 | F32BE | 1 | Kilowatts |
| Drive Line Average Voltage Circuit 2 | 148 | F32BE | 1 | Volts |
| Drive Average Line Current Circuit 2 | 150 | F32BE | 1 | Amps |
| Drive Line Frequency Circuit 2 | 152 | F32BE | 1 | feet per second |
| AFD Frequency Circuit 2 | 154 | F32BE | 1 | feet per second |
| AFD Transistor Temperature Circuit 2 | 156 | F32BE | 1 | Degrees Fahrenhe |
| Drive Inverter Base Temperature Circuit 2 | 158 | F32BE | 1 | Degrees Fahrenhe |
| Drive Rectifier Base Temperature Circuit 2 | 160 | F32BE | 1 | Degrees Fahrenhe |
| Number Of Circuits | 162 | F32BE | 1 | No Units |
| Number Of Compressors Circuit 1 | 164 | F32BE | 1 | No Units |
| Number Of Compressors Circuit 2 | 166 | F32BE | 1 | No Units |
| Free Cooling Capacity | 168 | F32BE | 1 | Percent |
| Free Cooling Entering Water Temperature | 170 | F32BE | 1 | Degrees Fahrenhe |
| Energy Consumption Lifetime | 172 | F32BE | 1 | Kilowatts hour |
| Energy Consumption | 174 | F32BE | 1 | Kilowatts hour |
| Unit Source ID | 176 | F32BE | 1 | No Units |
| Chiller Design Capacity | 178 | F32BE | 1 | Tons of Refriger |
| Active Cool/Heat Setpoint Temperature | 180 | F32BE | 1 | Degrees Fahrenhe |
| Actual Running Capacity | 182 | F32BE | 1 | Percent |
| Running Mode | 2009 | U16 | 1 | |
| Operating Mode | 2010 | U16 | 1 | |
| Chiller Setpoint Source | 2011 | U16 | 1 | |
| Refrigerant Type | 2012 | U16 | 1 | |
| Cooling Type | 2013 | U16 | 1 | |
| Manufacture Location | 2014 | U16 | 1 | |
| Model Information [GEN2] | 2015 | U16 | 1 | |
| Run Enable | 3009 | I16 | 1 | |
| Local Setpoint Control | 3010 | I16 | 1 | |
| Limit Mode Relay Status | 3011 | I16 | 1 | |
| Chiller Running State | 3012 | I16 | 1 | |
| Maximum Capacity Relay | 3013 | I16 | 1 | |
| Evaporator Water Pump Command | 3014 | I16 | 1 | |
| Evaporator Water Flow Status | 3015 | I16 | 1 | |
| Manual Override Exists | 3016 | I16 | 1 | |
| Emergency Stop | 3017 | I16 | 1 | |
| Diagnostic Present | 3018 | I16 | 1 | |
| Diagnostic Shutdown Present | 3019 | I16 | 1 | |
| Diagnostic: Manual Reset Required | 3020 | I16 | 1 | |
| Diagnostic: Local Manual Reset Required | 3021 | I16 | 1 | |
| Diagnostic Present: Information | 3022 | I16 | 1 | |
| Diagnostic Present: Warning | 3023 | I16 | 1 | |
| Diagnostic Present: Critical | 3024 | I16 | 1 | |
| Diagnostic Present: Service Required | 3025 | I16 | 1 | |
| Running Status Cprsr1A | 3026 | I16 | 1 | |
| Running Status Cprsr2A | 3027 | I16 | 1 | |
| Free Cooling Active | 3028 | I16 | 1 | |
| External Auto Stop | 3029 | I16 | 1 | |
| Front Panel Auto/Stop | 3030 | I16 | 1 | |
| Noise Reduction Request Active | 3031 | I16 | 1 |
| terminals | P1 Link (+ and - terminals) |
| A/B polarity | Observe wire polarity when connecting to the + and - terminals. The + terminals and the - terminals are internally connected. |
| connector | RJ-45 for Modbus TCP on Ethernet port 1 |
| wiring notes | P1 Link is used for RS-485 daisy chain. |
| protocol notes | The Symbio 800 controller does not support the optional Wi-Fi module with Modbus TCP communications. |
| power | Power for the controller is provided and connected from within the chiller control panel. |
| doc revision | BAS-SVP045B-EN |
Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.
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