Toshiba VF-AS1 Series, RS485 instruction manual Norn, 2FH Byte 4EH6EH Bytes

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E6581315

2) Error Processing (Binary mode)

In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type num- ber is returned to the computer in addition to the checksum. At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed.

Omissible

 

(3.5bytes

“/”

 

INV-NO

 

Norn

DATA

 

SUM

(3.5bytes

 

 

Blank)

(2FH)

 

1 byte

 

(4EH)(6EH)

2 bytes

 

1 byte

Blank)

 

 

 

 

 

 

 

Checksum area

 

Not omissible

 

 

 

 

 

 

Norn (1 byte)

: Communication error command ... This command is also used for a check when the in-

 

 

verter is tripped.

 

 

 

 

 

 

 

 

 

“4EH (N)” is returned under normal conditions, while “6EH (n)” is returned when the in-

 

 

verter is tripped.

 

 

 

 

 

 

 

Data (2 bytes)

: Error code (0000~0004)

 

 

 

 

 

 

 

 

0000

... Impossible to execute (Although communication is established normally, the com-

 

 

 

 

mand cannot be executed because it is to write data into a parameter whose set-

 

 

 

 

ting cannot be changed during operation (e.g., maximum frequency) or the

 

 

 

 

EEPROM is faulty.)

 

 

 

 

 

 

 

 

0001

... Data error (The data is outside the specified range or it is composed of too many

 

 

 

 

digits.)

 

 

 

 

 

 

 

 

 

0002

... Communication number error (There is no communication number that matches.)

 

 

0004

... Checksum error (The checksum result differs.)

 

 

No code returned ...Command error, format error (failure to receive the specified number of bytes within 0.5 seconds, or an parity, overrun or framing error) or the inverter number does not match or an inverter in broadcast communi- cation in the binary mode except for the inverter for data returning (the inverter numbered 00H).

„Examples:

2FH, 4EH, 00H, 00H, 7DH ... Impossible to execute (e.g., a change of maximum frequency data during operation)

2FH, 4EH, 00H, 01H, 7EH ... Data setting error (The data specified falls outside the specified range.)

2FH, 4EH, 00H, 02H, 7FH ... No communication number (There is no communication number that matches.)

2FH, 4EH, 00H, 04H, 81H ... Checksum error (The checksum result differs.)

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Contents E6581315② Tosvert VF-AS1 Series RS485 Communication FunctionE6581315 Read first Safety precautionsContents BIT15 BIT8BIT7 BIT0 General outlines of the communication functionBit Word BIT2 Data transmission specificationsAbout the handling of received frames Communication protocolMOUBUS-RTU Toshiba Inverter Protocol Binary mode 2FHData transmission format Data transmission format used in Ascii modeINV-NO CMD Data28H Bytes Checksum area 5bytes BlankData SUM INV-NOData transmission format used in binary mode Returned for the 57H W and 50H P commands Command receivedByte Bytes Sum 1 bytes Checksum not omissible 00H to FFH2FH Byte 4EH6EH Bytes NornTransmission format of Block Communication Page Bytes Blank Start Code INV-NO Dummy data is required for this command CommandsReads the data with the specified communication number Block communication Computer InverterRFE03077BCR RFE03CRPage Format error Data transmission format does not match Transmission errorsCommunication There is no communication number that matches Broadcast communication function VF-AS1 Ascii mode Computer → Inverter Inverter → Computer Examples of the use of communication commandsFrom the computer H = 24d  trip status RFC90CRExamples of Communication programs Next =LENS$ For I=1 to LInput #1,B$ GotoIf Count 0 then T=TIMER 160 T=TIMER COUNT=TIMER-TPrint #1,B$ Page MSComm1.Output = Text2.Text & Chr13 End Sub End IfText2.Text = Text1.Text = End Sub Inverter number  MODBUS-RTU protocolMODBUS-RTU transmission format Read commandCRC Blank Command 1 byte Write command5bytes Blank Command 1 byte Text size is 8 bytes fixed InverterCRC Generation Error codesBit counter = End Return CRCInter-drive communication Never use pin-7 P11 QWiring 4-wire RS485 communication） E6581315 QWiring 2-wire RS485 communicationPage Parameters relating to the slave side example =0.01% Proportional control of speed90.00Hz 45.00Hz Slave 100.00Hz 00%Slave 100.00Hz1 00% 80.00Hz 40.00HzINV-NO 1 byte Inverter number Transmission format for inter-drive communication0OFF Communication parametersMODBUS-RTU Inverter number Baud rate,  , Parity PC → INV „ Timer Time-out period Computer linkMaster INV To Slave INV INV → PC PC → INVFree notes Send waiting time , Use this function for the following case Communication commands commands from the computer Commands and monitoring from the computerPI OFF OFFForcibly braked Preliminary excitation Electric Power quantityBrake release B Braking answer BAWire RS485 communication FA32 „ FM analog output FA51 „ Terminal board output data FA50„ AM analog output FA52 Output terminal no Specified data outputRFD00CR Monitoring from the computerUnit 0.01% N·m RES „ Input terminal board status FD06, FE06Input terminal function selection 9 f119 BIT15„ Output terminal board status FD07, FE07 ST=ON ST=OFF „ Inverter operating status 1 FD01, FE01„ Inverter operating status 3 FD49, FE49 „ Inverter operating status 2 FD42, FE42„ Inverter operating frequency mode status FD46, FE46 „ Inverter operating command mode status FD45, FE45Preset speed operation „ Cumulative operation time alarm monitor FE79 „ Alarm information monitor FC91Bit Specifications Remarks E6581315 Model Data „ Inverter model capacity code FB05Parameter Name Range Setting LED setting by communicationUtilizing panel LEDs and keys by communication „ Block Communication Function for LED Display Blank Ascii LED display data code 00H-1FH are blankFA10=0 Key utilization by communicationFA10=1 Parameter data ROM EEPPage FE02 Frequency command value 01Hz Alarm codeFE19 Torque command FE29 Input powerE6581315 FD50 Light-load high-speed torque 01% Tion FE80 Cumulative power on timeFE84 Binary input value option Can Appendix 1 Table of data codesSUB ESCResponse time „ Data transmission time Appendix 2 Response timeVF-A7 Appendix 3 Compatibility with the communication functionAppendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication RXB RXATXA TXB

RS485, VF-AS1 Series specifications

The Toshiba VF-AS1 Series represents a significant advancement in the realm of variable frequency drives (VFDs), designed for various industrial applications that demand precision, efficiency, and reliability. With support for RS485 communication, the VF-AS1 Series fosters seamless integration into complex automation systems, making it the perfect choice for modern manufacturing environments.

One of the standout features of the Toshiba VF-AS1 Series is its versatile communication capabilities. The built-in RS485 port allows for easy connectivity with a range of devices, including PLCs (Programmable Logic Controllers) and HMIs (Human-Machine Interfaces). This ensures real-time monitoring and control of motor functions, enhancing operational efficiency and data analysis.

The VF-AS1 Series is engineered with advanced control technologies that provide exceptional motor performance. It incorporates vector control algorithms that optimize torque and speed regulation for both standard and permanent magnet motors. This results in precise motor control across a wide range of speeds and load conditions, ensuring optimum performance and energy savings.

Another noteworthy characteristic is its user-friendly interface. The VF-AS1 features a clear LCD display that allows for easy navigation and configuration. This intuitive design minimizes the learning curve for operators and technicians, facilitating quick setup and adjustments. Additionally, the series supports various programming options, catering to both novice users and experienced professionals.

Energy efficiency is a key priority in the design of the VF-AS1 Series. The drives are equipped with energy-saving features that help reduce overall power consumption and operational costs. With built-in sleep modes and dynamic energy feedback, these drives optimize energy usage based on demand, making them suitable for both constant and variable load applications.

In terms of safety and protection, the VF-AS1 Series incorporates various built-in safeguards, including overvoltage, undervoltage, and overcurrent protection. This comprehensive approach to safety not only protects the drive itself but also ensures the longevity of connected equipment.

Overall, the Toshiba VF-AS1 Series, with its robust feature set, advanced technologies, and focus on energy efficiency, proves to be a reliable choice for a wide range of industrial applications. Its integration of RS485 communication allows for enhanced connectivity and control, making it an excellent solution for modern automation needs.
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