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CFW100 (BACnet MS/TP)

Variable frequency drive · BACnet points list

WEG CFW100 (BACnet MS/TP) BACnet points list

Updated 4 November 2026

Short answer

The CFW100 runs BACnet MS/TP on its RS-485 port and maps drive parameters to fixed objects: AVs for speed, current, voltage, frequency, torque, heatsink temperature, alarm/fault numbers, ramps and the network speed reference; BVs for the status word (P680) and control word (P682); plus digital inputs DI1-DI4. A mailbox (AV 100/101, BV 100/101) reads or writes any parameter by number.

This page lists 45 BACnet objects for the WEG CFW100 (BACnet MS/TP) — 15 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from WEG’s own free documentation, linked below.

Manufacturer: WEG
Model: CFW100 (BACnet MS/TP)
Equipment: Variable frequency drive
Equipment type: VFDs & pumps
BACnet objects: 45 (15 writable)
Transport: BACnet MS/TP
Firmware: Not stated
Default device instance: 359000 + serial address (P308) when P760 and P761 are 0
Also known as: CFW100, WEG CFW100, CFW100 BACnet, 10007481001
Source document: BACnet CFW100 User's Manual · 10007481001 / 00 · rev. 2020-03

Download CSV 45 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 WEG’s current documentation and the live device before use. Not official WEG information. Terms of use.

BMS integration notes: WEG CFW100 (BACnet MS/TP)

Integration in brief

Set P312 = 3 (BACnet MS/TP), the address in P308 and the baud rate in P310, then set P220-P228 so run/stop, direction and reference come from the serial port. Write BV 16 ramp enable (run/stop) with BV 17 general enable and the speed reference to AV 12 (8192 = rated frequency). Read BV 8, AV 3, AV 1 and BV 15, and reset faults with BV 23.

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 16	Ramp Enable	Start/stop from the BMS (1 = run)	Command
BV 17	General Enable	General enable; must be on to run	Command
BV 20	Remote	Remote mode when P220 selects serial	Command
AV 12	Serial/USB Speed Ref.	Speed reference, 8192 = rated frequency	Command
BV 23	Fault Reset	Reset a tripped drive	Command
BV 8	Running	Running status	Read
AV 3	Motor Frequency	Output frequency in Hz	Read
AV 1	Motor Current	Motor amps	Read
BV 15	Fault	Any active drive fault	Read
AV 8	Present Fault	Active fault number	Read

Enable & remote start

The drive only obeys the network when P220-P228 select the serial option for local/remote, reference, direction and run/stop. It needs both BV 17 General Enable and BV 16 Ramp Enable; BV 20 Remote switches to remote when P220 takes local/remote from the serial control word.

Heartbeat & communication loss

P314 Serial Watchdog (0.0-999.0 s, 0 = off, factory 0.0): if no valid telegram arrives within that time the drive shows alarm A128 (or fault F228) and runs the P313 action: 0 none, 1 ramp stop (factory), 2 general disable, 3 go to local, 4 local keeping commands, 5 fault. Timing starts at the first valid telegram after power-up.

Network setup

P312 = 3 (BACnet MS/TP); P308 sets the MS/TP address (MS/TP allows 0-254; 128-254 are slave-only).
P310 baud 9600, 19200, 38400, 57600 or 76800; P311 must be 0 (8 bits, no parity, 1 stop).
Device instance: P760 x 10000 + P761; with both at 0 the drive uses 359000 + P308 (WEG vendor ID 359).
P762 max master (factory 127), P763 max info frames, P764 I-Am at power-up (factory) or continuously.

Watch out for

Speed reference AV 12 is a 13-bit value, not Hz or %: 8192 = motor rated frequency; negative values reverse.
Ramp times AV 9/10 and the mailbox write change drive parameters; don't write them cyclically.
P313 = 0 keeps the drive running at the last command after a comm loss.
P311 factory value is 1 (even parity); BACnet needs 0.

WEG CFW100 (BACnet MS/TP) 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.

45 of 45 shown

Type

Analog

Access

Units

Show

WEG CFW100 (BACnet MS/TP) BACnet Points List
			Description			States
AV	0	Motor Speed	Motor speed (P002)	rpm	Read
AVmin	1	Motor Current	Motor current (P003)	A	Read
AV	2	DC Link Voltage (Ud)	DC bus voltage (P004)	V	Read
AVmin	3	Motor Frequency	Output frequency (P005)	Hz	Read
AV	4	Motor Voltage	Output voltage (P007)	V	Read
AV	5	Motor Torque	Motor torque (P009)	%	Read
AV	6	Heatsink Temperature	Heatsink temperature (P030)	°C	Read
AV	7	Present Alarm	Active alarm number (P048)		Read
AVmin	8	Present Fault	Active fault number (P049)		Read
AV	9	Acceleration Time	Acceleration ramp time (P100)	s	Command
AV	10	Deceleration Time	Deceleration ramp time (P101)	s	Command
AV	11	Speed in 13 bits	Motor speed in 13-bit scale (P681)		Read
AVmin	12	Serial/USB Speed Ref.	Speed reference from the network, 13-bit (P683)		Command
AV	100	Mailbox: param. number	Mailbox parameter number		Write
AV	101	Mailbox: param. value	Mailbox parameter value		Write
BI	0	DI1	Digital input 1 (P012 bit 0)		Read	0=Off, 1=On
BI	1	DI2	Digital input 2 (P012 bit 1)		Read	0=Off, 1=On
BI	2	DI3	Digital input 3 (P012 bit 2)		Read	0=Off, 1=On
BI	3	DI4	Digital input 4 (P012 bit 3)		Read	0=Off, 1=On
BV	0	Reserved	Reserved		Read
BV	1	Run Command	Status word: Run Command (P680 bit 1)		Read	0=Off, 1=On
BV	2	Fire mode	Status word: Fire mode (P680 bit 2)		Read	0=Off, 1=On
BV	3	Reserved	Reserved		Read
BV	4	Reserved	Reserved		Read
BV	5	2nd Ramp	Status word: 2nd Ramp (P680 bit 5)		Read	0=Off, 1=On
BV	6	Config. Mode	Status word: Config. Mode (P680 bit 6)		Read	0=Normal, 1=Config
BV	7	Alarm	Status word: Alarm (P680 bit 7)		Read	0=No Alarm, 1=Alarm
BVmin	8	Running	Status word: Running (P680 bit 8)		Read	0=Stopped, 1=Running
BV	9	Enabled	Status word: Enabled (P680 bit 9)		Read	0=Disabled, 1=Enabled
BV	10	Forward	Status word: Forward (P680 bit 10)		Read	0=Reverse, 1=Forward
BV	11	JOG	Status word: JOG (P680 bit 11)		Read	0=Off, 1=On
BV	12	Remote	Status word: Remote (P680 bit 12)		Read	0=Local, 1=Remote
BV	13	Subvoltage	Status word: Subvoltage (P680 bit 13)		Read	0=No, 1=Subvoltage
BV	14	Reservado	Reserved		Read
BVmin	15	Fault	Status word: Fault (P680 bit 15)		Read	0=No Fault, 1=Fault
BVmin	16	Ramp Enable	Control word: Ramp Enable (P682 bit 0)		Command	0=Stop, 1=Run
BVmin	17	General Enable	Control word: General Enable (P682 bit 1)		Command	0=Disable, 1=Enable
BV	18	Run Forward	Control word: Run Forward (P682 bit 2)		Command	0=Reverse, 1=Forward
BV	19	JOG Enable	Control word: JOG Enable (P682 bit 3)		Command	0=Off, 1=On
BVmin	20	Remote	Control word: Remote (P682 bit 4)		Command	0=Local, 1=Remote
BV	21	2nd Ramp	Control word: 2nd Ramp (P682 bit 5)		Command	0=Off, 1=On
BV	22	Quick Stop	Control word: Quick Stop (P682 bit 6)		Command	0=Off, 1=On
BVmin	23	Fault Reset	Control word: Fault Reset (P682 bit 7)		Command	0=Off, 1=Reset
BV	100	Mailbox: exec. read	Mailbox read trigger		Write	0=Off, 1=On
BV	101	Mailbox: exec. write	Mailbox write trigger		Write	0=Off, 1=On

Object ID lookup: WEG CFW100 point IDs by name

AV0Motor Speed
AV1Motor Current
AV2DC Link Voltage (Ud)
AV3Motor Frequency
AV4Motor Voltage
AV5Motor Torque
AV6Heatsink Temperature
AV7Present Alarm
AV8Present Fault
AV9Acceleration Time
AV10Deceleration Time
AV11Speed in 13 bits
AV12Serial/USB Speed Ref.
AV100Mailbox: param. number
AV101Mailbox: param. value
BI0DI1
BI1DI2
BI2DI3
BI3DI4
BV0Reserved
BV1Run Command
BV2Fire mode
BV3Reserved
BV4Reserved
BV52nd Ramp
BV6Config. Mode
BV7Alarm
BV8Running
BV9Enabled
BV10Forward
BV11JOG
BV12Remote
BV13Subvoltage
BV14Reservado
BV15Fault
BV16Ramp Enable
BV17General Enable
BV18Run Forward
BV19JOG Enable
BV20Remote
BV212nd Ramp
BV22Quick Stop
BV23Fault Reset
BV100Mailbox: exec. read
BV101Mailbox: exec. write

Integration notes

Reserved status-word bits are listed as printed (no state or access given).
The CFW100 list has no analog or digital output objects; BI 0-3 are DI1-DI4.
AV 11 Speed in 13 bits and AV 12 Serial/USB Speed Ref. use a 13-bit scale: 8192 = motor rated frequency.
Mailbox: write the parameter number to AV 100, then 1 to BV 100 to read it into AV 101, or set AV 101 and write 1 to BV 101.

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 CFW100 (BACnet MS/TP) 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 WEG CFW100 (BACnet MS/TP)

How many BACnet points does the WEG CFW100 (BACnet MS/TP) have?

This list has 45 BACnet objects: 15 analog values, 4 binary inputs, 26 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which WEG CFW100 (BACnet MS/TP) BACnet points are writable?

15 of the 45 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 WEG CFW100 (BACnet MS/TP) BACnet documentation?

The source is BACnet CFW100 User's Manual (10007481001 / 00), revision 2020-03, published free by WEG at https://static.weg.net/medias/downloadcenter/hfc/h9b/WEG-CFW100-bacnet-users-manual-10007481001-en.pdf.

What are the minimum BACnet points to integrate the WEG CFW100 (BACnet MS/TP)?

Start with BV 16 Ramp Enable (Start/stop from the BMS (1 = run)); BV 17 General Enable (General enable; must be on to run); BV 20 Remote (Remote mode when P220 selects serial); AV 12 Serial/USB Speed Ref. (Speed reference, 8192 = rated frequency); BV 23 Fault Reset (Reset a tripped drive); BV 8 Running (Running status); AV 3 Motor Frequency (Output frequency in Hz); AV 1 Motor Current (Motor amps); BV 15 Fault (Any active drive fault); AV 8 Present Fault (Active fault number).

How do I enable BMS control of the WEG CFW100 (BACnet MS/TP)?

Does the WEG CFW100 (BACnet MS/TP) need a BACnet heartbeat or have a communication timeout?

How do I check these points on the real CFW100 (BACnet MS/TP)?

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 WEG BACnet points lists

Source: BACnet CFW100 User's Manual · 10007481001 / 00 · rev. 2020-03. Object names, instances and units are reproduced as published; descriptions are our own.