AutomationDirect WEG CFW100 AC Quick Start Guide

WEG CFW100 AC DrivEs sEriAl
CommuniCAtions QuiCk-stArt GuiDE

NOTE: This Quick-Start guide is intended for the sole purpose of establishing
communications connections between WEG CFW100 AC Drives and AutomationDirect
programmable controllers, or between the CFW100 and the USB port of a personal
computer. Please refer to WEG CFW100 documents for specifications and instructions
for using the WEG CFW100 AC Drives.

T

able of ConTenTs

Communications Parameters Summary � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5–2

Summary – Serial Communication Parameters � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5–2

Explanation of Scaling/Count Frequency Command/Feedback � � � � � � � � � � � � � � � � � � �5–5

Connecting PC to CFW100 Using AutomationDirect Cable USB-485M� � � � � � � � � � � � � � �5–5

Connecting Communication Cables to CFW100 AC Drives � � � � � � � � � � � � � � � � � � � � �5–6

AutomationDirect PLCs as Modbus Master � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �5–7

Communication Cable Connections � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5–7
RS-232C to RS-485 Conversion� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5–8
AutomationDirect PLC Cable Connections � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5–9
AutomationDirect PLC Example Programs for WEG CFW100 AC Drive � � � � � � � � � � � � � � � � � � 5–12
CLICK PLC Example Program for WEG CFW100 AC Drive � � � � � � � � � � � � � � � � � � � � � � � � �5–12

Page 5–1CFW100 AC Drives Serial Communications Quick-Start Guide – 1st Edition-10 25 2019 prelim

WEG CFW100 AC Drives Serial Communications Quick-Start Guide

CommuniCations Parameters summary

A summary of the WEG CFW100 AC drives Communications Parameters is listed below.

NOTE: Refer to the WEG CFW100 Frequency Inverter Micro Mini Drives Programming Manual and the Modbus
RTU User’s Manual for a complete listing of all CFW100 AC drives parameters, including details and Modbus
addresses.

Summary – Serial CommuniCation ParameterS

WEG CFW100 Serial Communication Parameters Summary

Parameter

2

Range

1) To read parameters, use Function Code 3; To write parameters, use Function Code 6 or 16

2) ♦ indicates a parameter that can be changed only with a stopped motor

3) RO = Read Only

4) Modicon Modbus addressing for the CFW100 is 40000 + the Parameter Address;
Example: P222 Modicon Modbus address would be 40000 + 222 = 40222

5) Speed references and commands via Modbus RTU will always be Remote references; not Local

6) Baud rate in the PLC must match the baud rate in the AC drive (19200 bits/s)

General Parameters
P000
P001
P002
P003
P004
P005

♦P200

Access to Parameters 0 to 9999 1 0 40000
Speed Reference 0 to 9999 RO RO 1 40001
Output Speed (Motor) 0 to 9999 RO RO 2 40002
Motor Current 0�0 to 40�0 A RO RO 3 40003
DC Link Voltage (Ud) 0 to 524 V RO RO 4 40004
Output Frequency (Motor) 0�0 to 400�0 Hz RO RO 5 40005

0 = Inactive

Password

1 = Active
2 to 9999 = New Password

Parameters neccessary to communicate with the drive using module CFW-485

0 = Always Local
1 = Always Remote
2, 3 = not used
4 = DIx

♦P220

♦P222

LOC/REM Selection Source

REM Reference Selection

5)

5 = Serial/USB (LOC)
6 = Serial/USB (REM)
7, 8 = not used
9 = CO/DN/DP (LOC)
10 = CO/DN/DP (REM)
11 = SoftPLC

0 = HMI Keys
1 = AI1
2 = AI2
3 = not used
4 = FI
5 = AI1 + AI2 > 0
6 = AI1 + AI2
7 = E�P�
8 = Multispeed
9 = Serial/USB
10 = not used
11 = CO/DN/DP
12 = SoftPLC
13 = not used
14 = AI1 > 0
15 = AI2 > 0
16 = not used
17 = FI > 0

(table continued next page)

Setting Modbus Address
Comm Default

1 0 DC 40220

9 1 DE 40222

1

3

Hex Modicon

0 C8 40200

4

Page 5–2 CFW100 AC Drives Serial Communications Quick-Start Guide – 1st Edition

WEG CFW100 AC Drives Serial Communications Quick-Start Guide

WEG CFW100 Serial Communication Parameters Summary1 – (continued)

Parameter

2

Range

1) To read parameters, use Function Code 3; To write parameters, use Function Code 6 or 16

2) ♦ indicates a parameter that can be changed only with a stopped motor

3) RO = Read Only

4) Modicon Modbus addressing for the CFW100 is 40000 + the Parameter Address;
Example: P222 Modicon Modbus address would be 40000 + 222 = 40222

5) Speed references and commands via Modbus RTU will always be Remote references; not Local

6) Baud rate in the PLC must match the baud rate in the AC drive (19200 bits/s)

0 = Forward
1 = Reverse
2, 3 = not used
4 = DIx
5 = Serial/USB (FWD)

♦P226

♦P227

♦P308

♦P310

♦P311

♦P312

P313

♦P314

P316

REM FWD/REV Selection

REM Run/Stop Selection

Serial Address 1 to 247 1 1 134 40308

Serial Baud Rate

Serial Interface Byte Configuration

Serial Protocol

Action for Comm Error

Serial Watchdog 0�0 to 999�0 0�0 0�0 13A 40314

Serial Interface Status

6)

6 = Serial/USB (REV)
7, 8 = not used
9 = CO/DN/DP (FWD)
10 = CO/DN/DP (REV)
11 = not used
12 = SoftPLC

0 = HMI Keys
1 = DIx
2 = Serial/USB
3 = not used
4 = CO/DN/DP
5 = SoftPLC

0 = 9600 bits/s
1 = 19200 bits/s
2 = 38400 bits/s

0 = 8 bits, np, 1 stop bit
1 = 8 bits, even, 1 stop bit
2 = 8 bits, odd, 1 stop bit
3 = 8 bits, np, 2 stop bits
4 = 8 bits, even, 2 stop bits
5 = 8 bits, odd, 2 stop bits

0, 1 = reserved
2 = Slave Modbus RTU
3, 4 = reserved
5 = Master Modbus RTU

0 = Inactive
1 = Ramp Stop
2 = General Disable
3 = Go to LOC
4 = LOC Keep Enable
5 = Cause Fault

0 = Inactive
1 = Active
2 = Watchdog Error

(table continued next page)

Setting Modbus Address
Comm Default

2 1 E3 40227

1 1 136 40310

1 1 137 40311

2 2 138 40312

1 1 139 40313

RO RO 13C 40316

3

Hex Modicon

4 E2 40226

4

Page 5–3 CFW100 AC Drives Serial Communications Quick-Start Guide – 1st Edition

WEG CFW100 AC Drives Serial Communications Quick-Start Guide

WEG CFW100 Serial Communication Parameters Summary1 – (continued)

Parameter

2

Range

1) To read parameters, use Function Code 3; To write parameters, use Function Code 6 or 16

2) ♦ indicates a parameter that can be changed only with a stopped motor

3) RO = Read Only

4) Modicon Modbus addressing for the CFW100 is 40000 + the Parameter Address;
Example: P222 Modicon Modbus address would be 40000 + 222 = 40222

5) Speed references and commands via Modbus RTU will always be Remote references; not Local

6) Baud rate in the PLC must match the baud rate in the AC drive (19200 bits/s)

0 to FFFF (hex)
Bit 0 = reserved
Bit 1 = Run Command
Bit 2 = Fire Mode
Bits 3 and 4 = reserved
Bit 5 = 2nd Ramp
Bit 6 = Config� Status

P680

P681

P682

P683

Logical Status

Motor Speed in 13 bits 0 to FFFF (hex) RO RO 2A9 40681

Serial//USB Control

Serial/USB Speed Reference 0 to FFFF (hex) RO RO 2AB 40683

Bit 7 = Alarm
Bit 8 = Running
Bit 9 = Enabled
Bit 10 = Forward
Bit 11 = JOG
Bit 12 = Remote
Bit 13 = Undervoltage
Bit 14 = reserved
Bit 15 = Fault

0 to FFFF (hex)
Bit 0 = Ramp Enable
Bit 1 = General Enable
Bit 2 = Run Forward
Bit 3 = JOG Enable
Bit 4 = Remote
Bit 5 = 2nd Ramp
Bit 6 = reserved
Bit 7 = Fault Reset
Bit 8 to 15 = reserved

Setting Modbus Address
Comm Default

RO RO 2A8 40680

RO RO 2AA 40682

3

Hex Modicon

4

Page 5–4 CFW100 AC Drives Serial Communications Quick-Start Guide – 1st Edition

WEG CFW100 AC Drives Serial Communications Quick-Start Guide

exPlanation of sCaling/Count frequenCy Command/feedbaCk

•

When using WEG CFW100 drives, speed/frequency is shown in counts� In order to convert to Hz/
rpm, it is needed to know that the Base Frequency (P403) is equivalent to 8192 (2^13)� Also, the
Motor Rated speed (P402) can be scaled using the same method�

•

Actual Frequency (P681) and Command Frequency (P683) can be calculated using that ratio�

•

For instance: P681 = 2048(dec)�

•

Freq = 2048*60�00/8192 = 15�00 Hz

•

RPM = 2048*1740/8192 = 435�00 rpm

ConneCting PC to CfW100 using automationdireCt Cable usb-485m

An AutomationDirect cable, part number USB-485M, provides a quick and easy method of
communicating to a WEG CFW100 AC Drive from a PC which has WEG CFW-WPS software installed.

NOTE: Refer to the WEG WPS Software User Manual for information and instructions regarding using the WPS
software to configure CFW100 AC Drives.

AutomationDirect USB-485M

Connector

6 RS485 = A (-)
7 RS485 = B (+)
8 GND
9 Shield

10 GND

To
RS-485
Port

Page 5–5 CFW100 AC Drives Serial Communications Quick-Start Guide – 1st Edition