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UPS (uninterruptible power supply) · BACnet points list

Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX BACnet points list

Updated 12 November 2026

Short answer

Gateway profile for the Mitsubishi 9900A UPS over Modbus TCP: 55 objects (43 AI, 12 BI), all polled. It reads bypass, battery, input and output voltages, currents, frequencies and power, battery capacity and discharge count, module data, the breaker and contactor states, inverter and rectifier operation, battery discharging, UPS fault and ten alarm registers.

This page lists 55 BACnet objects for the Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Contemporary Controls’s own free documentation, linked below.

Manufacturer
Contemporary Controls
Model
Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX
Equipment
UPS (uninterruptible power supply)
Equipment type
Other equipment
BACnet objects
55 (0 writable)
Transport
BACnet IP
Firmware
Not stated
Also known as
9900A, 9900 UPS, Mitsubishi UPS Modbus TCP, MUCM 9900
Source document
BASgatewayLX Modbus device profile Mitsubishi_MUCM_9900_Modbus_TCP · Mitsubishi_MUCM_9900_Modbus_TCP_LX.csv
Download CSV 55 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Contemporary Controls’s current documentation and the live device before use. Not official Contemporary Controls information. Terms of use.

BMS integration notes: Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX

Integration in brief

Read inverter operation, battery discharging and UPS fault, battery capacity and output power %.

Minimum points to map

The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.

ObjectNameWhyAccess
BI 37UPS Inverter OperationInverter operatingRead
BI 44Battery DischargingBattery dischargingRead
AI 8Battery Capacity Remaining %Battery capacity remaining, %Read
AI 28Output Power %Output power, %Read
AI 27Output KWOutput kWRead
AI 19Output VoltageOutput voltageRead
AI 18Output FrequencyOutput frequencyRead
AI 11Input VoltageInput voltageRead
BI 45UPS FaultUPS faultRead
AI 29Total # of FaultsTotal number of faultsRead

Network setup

Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX BACnet objects

Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.

Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.

55 of 55 shown
Type
AnalogBinary
Show
Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX BACnet Points List
DescriptionStates
AI1Bypass FrequencyModbus 301106HzRead
AI2Bypass VoltageModbus 301107VRead
AI3Bypass Voltage ABModbus 301108VRead
AI4Bypass Voltage BCModbus 300109VRead
AI5Bypass Voltage CAModbus 301110VRead
AI6Battery VoltageModbus 301137VRead
AI7Battery CurrentModbus 301138ARead
AImin8Battery Capacity Remaining %Modbus 301139%Read
AI9Battery Operation CountModbus 301480Read
AI10Input FrequencyModbus 301111HzRead
AImin11Input VoltageModbus 301112VRead
AI12Input Voltage ABModbus 301113VRead
AI13Input Voltage BCModbus 301114VRead
AI14Input Voltage CAModbus 301115VRead
AI15Output Voltage ABModbus 301117VRead
AI16Output Voltage BCModbus 301118VRead
AI17Output Voltage CAModbus 301119VRead
AImin18Output FrequencyModbus 301123HzRead
AImin19Output VoltageModbus 301124VRead
AI20Power FactorModbus 301125PFRead
AI21Output Current AModbus 301126ARead
AI22Output Current BModbus 301127ARead
AI23Output Current CModbus 301128ARead
AI24Output Current %AModbus 301130%Read
AI25Output Current %BModbus 301131%Read
AI26Output Current %CModbus 301132%Read
AImin27Output KWModbus 301134kWRead
AImin28Output Power %Modbus 301135%Read
AImin29Total # of FaultsModbus 301145Read
AI30Module KVAModbus 301315kVARead
AI31Module Input VoltageModbus 301316VRead
AI32Module Output VoltageModbus 301317VRead
AI33Module ID #Modbus 301372Read
BI34UPS AC InputModbus 303000 bit 0Read
BI35UPS CB1 Input ContactorModbus 303000 bit 1Read
BI36CB2 Battery Circuit BreakerModbus 303000 bit 3Read
BImin37UPS Inverter OperationModbus 303000 bit 4Read
BI38UPS 52C AC Output ContactorModbus 303000 bit 5Read
BI39UPS Bypass InputModbus 303000 bit 6Read
BI40UPS 52S Bypass Output ContactorModbus 303000 bit 7Read
BI41UPS AC OutputModbus 303000 bit 8Read
BI42UPS MultiModule System SynchronizationModbus 303000 bit 9Read
BI43UPS Rectifier OperationModbus 303000 bit 12Read
BImin44Battery DischargingModbus 303000 bit 13Read
BImin45UPS FaultModbus 303000 bit 14Read
AI46Alarm register 1Modbus 302000Read
AI47Alarm register 2Modbus 302004Read
AI48Alarm register 3Modbus 302008Read
AI49Alarm register 4Modbus 302012Read
AI50Alarm register 5Modbus 302016Read
AI51Alarm register 6Modbus 302020Read
AI52Alarm register 7Modbus 302024Read
AI53Alarm register 8Modbus 302028Read
AI54Alarm register 9Modbus 302032Read
AI55Alarm register 10Modbus 302036Read
Object ID lookup: Contemporary Controls BASgatewayLX Mitsubishi 9900A UPS point IDs by name

Integration notes

Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.

Questions about the Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX

How many BACnet points does the Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX have?

This list has 55 BACnet objects: 43 analog inputs, 12 binary inputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX BACnet points are writable?

None of the listed objects are marked writable in the source documentation. The source has no read/write column, so this is inferred from object type.

Where is the official Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX BACnet documentation?

The source is BASgatewayLX Modbus device profile Mitsubishi_MUCM_9900_Modbus_TCP (Mitsubishi_MUCM_9900_Modbus_TCP_LX.csv), published free by Contemporary Controls at https://www.ccontrols.com/support/dp/Mitsubishi9900A.zip.

What are the minimum BACnet points to integrate the Contemporary Controls Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX?

Start with BI 37 UPS Inverter Operation (Inverter operating); BI 44 Battery Discharging (Battery discharging); AI 8 Battery Capacity Remaining % (Battery capacity remaining, %); AI 28 Output Power % (Output power, %); AI 27 Output KW (Output kW); AI 19 Output Voltage (Output voltage); AI 18 Output Frequency (Output frequency); AI 11 Input Voltage (Input voltage); BI 45 UPS Fault (UPS fault); AI 29 Total # of Faults (Total number of faults).

How do I check these points on the real Mitsubishi Electric 9900A UPS (Modbus TCP) via BASgatewayLX?

Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.

More Contemporary Controls BACnet points lists

Source: BASgatewayLX Modbus device profile Mitsubishi_MUCM_9900_Modbus_TCP · Mitsubishi_MUCM_9900_Modbus_TCP_LX.csv. Object names, instances and units are reproduced as published; descriptions are our own.