Easy BACnet- Home
- BACnet points lists
- RHOSS
- Idrowall fan coil via KGTW-BAC BACnet gateway
Fan coil controller (via BACnet gateway) · BACnet points list
RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway BACnet points list
Updated 12 November 2026
KGTW-BAC is a DIN-rail Modbus RTU to BACnet gateway for RHOSS terminal units. With the Idrowall profile each Idrowall fan coil appears as its own BACnet device with 12 objects: water and room temperatures, fan RPM, valve state, setpoint, on/off, panel lock, louver, UV lamp, fan speed and mode. BACnet IP and BACnet MS/TP are both available.
This page lists 12 BACnet objects for the RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway — 7 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from RHOSS’s own free documentation, linked below.
- Manufacturer
- RHOSS
- Model
- Idrowall fan coil via KGTW-BAC BACnet gateway
- Equipment
- Fan coil controller (via BACnet gateway)
- Equipment type
- VAV boxes & fan coils
- BACnet objects
- 12 (7 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- Also known as
- KGTW-BAC, Idrowall, Idrowall_IP, KWPI, H58029
Reference only, provided as-is: verify against RHOSS’s current documentation and the live device before use. Not official RHOSS information. Terms of use.
BMS integration notes: RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway
Switch each Idrowall with IP_FC01_OnOff (BV 1), set mode (MV 2), fan speed (MV 1) and setpoint (AV 1), and read room temperature, valve state and the bus status. The table has no alarm object.
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.
| Object | Name | Why | Access |
|---|---|---|---|
| BV 1 | IP_FC01_OnOff | Fan coil on/off (1 = Unit ON) | Write |
| MV 2 | IP_FC01_Mode | Mode command (2 = Heating, 8 = Cool) | Write |
| MV 1 | IP_FC01_Fan | Fan speed command (8 = Auto) | Write |
| AV 1 | IP_FC01_Set | Room temperature setpoint | Write |
| AI 2 | IP_FC01_ProbeS2 | Room temperature | Read |
| BI 1 | IP_FC01_Valve | Water valve state (1 = Open) | Read |
| BI 2 | IP_FC01_Status | Gateway link to the fan coil (1 = Online) | Read |
Network setup
- Gateway default IP 192.168.1.24 / 255.255.255.0; it is set up from a web browser (no password at first).
- Each fan coil is added as a profile (model, Modbus address, BACnet description) and appears as its own BACnet device; its device instance is the base Instance_nr plus the Modbus address.
- The RHOSS side is Modbus RTU on RS485; BACnet MS/TP uses the second RS485 port (station address 1-254 as printed, Max Master 1-127, Info Frames settable).
- EDE files can be downloaded from http://<gateway IP>/ede.zip.
Watch out for
- All fan coils on one Modbus line must share baud rate, parity, data and stop bits; ask RHOSS before putting more than 32 devices on a line.
RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | IP_FC01_ProbeS1 | Probe S1, water temperature | Read | ||
| AImin | 2 | IP_FC01_ProbeS2 | Probe S2, room temperature | Read | ||
| AI | 3 | IP_FC01_RPM | Fan speed (RPM) | Read | ||
| BImin | 1 | IP_FC01_Valve | Valve | Read | 0=Closed, 1=Open | |
| AVmin | 1 | IP_FC01_Set | Setpoint | Write | ||
| BVmin | 1 | IP_FC01_OnOff | Unit on/off | Write | 0=Unit OFF, 1=Unit ON | |
| BV | 2 | IP_FC01_Lock | Local panel locked/unlocked | Write | 0=Unlocked, 1=Locked | |
| BV | 3 | IP_FC01_Louver | Louver status | Write | 0=Fixed, 1=Swing | |
| BV | 4 | IP_FC01_UV | UV lamp / ionizer | Write | 0=Off, 1=On | |
| MVmin | 1 | IP_FC01_Fan | Fan speed | Write | 1=Minimum speed, 2=Medium speed, 4=Maximum speed, 8=Auto | |
| MVmin | 2 | IP_FC01_Mode | Mode | Write | 1=Dry, 2=Heating, 4=Fan, 8=Cool, 16=Automatic | |
| BImin | 2 | IP_FC01_Status | Bus status | Read | 0=Offline, 1=Online |
No points match these filters.
Object ID lookup: RHOSS Idrowall fan coil via KGTW-BAC point IDs by name
Integration notes
- The guide's table is headed Idrowall_IPita but lists English names and descriptions.
- Fan speed and mode states use the bit values printed in the guide (1, 2, 4, 8, 16), not 1-2-3.
- Object names start with IP_FC01_ in the guide's example; the prefix follows the profile and unit set up in the gateway.
- Idrowall units connect directly to the RS485 line (DIP switch 4 OFF); the Modbus address (1-63) is set from the KWPI wired panel. The line runs at 9600 baud, odd parity, 8 data bits, 1 stop bit.
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 Idrowall fan coil via KGTW-BAC BACnet gateway 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 RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway
How many BACnet points does the RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway have?
This list has 12 BACnet objects: 3 analog inputs, 1 analog value, 2 binary inputs, 4 binary values, 2 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway BACnet points are writable?
7 of the 12 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.
Where is the official RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway BACnet documentation?
The source is KGTW-BAC Bacnet Gateway - Istruzioni per l'uso / Instructions for use (H58029), published free by RHOSS at https://www.rhoss.it/wp-content/uploads/2022/07/H58029-KGTW-BAC-Modbus-RTU-Bacnet-IP-gateway-manual-IT-EN.pdf.
What are the minimum BACnet points to integrate the RHOSS Idrowall fan coil via KGTW-BAC BACnet gateway?
Start with BV 1 IP_FC01_OnOff (Fan coil on/off (1 = Unit ON)); MV 2 IP_FC01_Mode (Mode command (2 = Heating, 8 = Cool)); MV 1 IP_FC01_Fan (Fan speed command (8 = Auto)); AV 1 IP_FC01_Set (Room temperature setpoint); AI 2 IP_FC01_ProbeS2 (Room temperature); BI 1 IP_FC01_Valve (Water valve state (1 = Open)); BI 2 IP_FC01_Status (Gateway link to the fan coil (1 = Online)).
How do I check these points on the real Idrowall fan coil via KGTW-BAC BACnet gateway?
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 RHOSS BACnet points lists
- Fan coil controller (via BACnet gateway)
RHOSS KCMS fan coil controller via KGTW-BAC BACnet gateway
RHOSS fan coils and cassettes with the KCMS controller, linked over Modbus RTU to the KGTW-BAC gateway.
Also known as: KGTW-BAC, KCMS, KCMS_IP, KCMS_MSTP, KRS485, H58029 - Chiller / heat pump plant sequencer
RHOSS KMTM Multi Thermal Manager (MTM) sequencer
RHOSS chiller, heat pump and multipurpose unit plants run by the KMTM sequencer (KMTM/SI standard or KMTM/TI touch interface), up to 10 units.
Also known as: MTM, KMTM, KMTM/SI, KMTM/TI, Multi Thermal Manager, KBM, KBE, KWEBU1, H58767
Source: KGTW-BAC Bacnet Gateway - Istruzioni per l'uso / Instructions for use · H58029. Object names, instances and units are reproduced as published; descriptions are our own.