Toshiba VF-AS1 Series, RS485 instruction manual Data transmission format used in binary mode

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E6581315

4.1.2. Data transmission format used in binary mode

A communication number is used to specify a data item, data is written in hexadecimal form, and data in transmission characters are represented by binary codes (HEX codes).

„Computer → Inverter (binary mode)

Omissible in one-to-one communication

No data for the 52H (R) command

 

 

 

 

 

 

(3.5bytes

Blank)

“/”

(2FH)

INV-NO

1 byte

CMD

1 byte

Communication No.

2 bytes

DATA

2 bytes

SUM 1 byte

(3.5bytes

Blank)

Checksum area

Not omissible

1. 2FH (“/”) (1 byte) : Start code in binary mode

2. INV-NO (2 bytes) : Inverter number (Omissible in one-to-one communication) ... 00H to 3FH ,FFH

 

In case the inverter number is other than FFH (broadcast communication), command is ex-

 

ecuted only when the inverter number coincides with the one designated with the panel. If

 

the inverter number is not matched, it will be judged invalid and the data is not returned.

3. CMD (1 byte)

: Command (For details, see the table below.)

 

52H (R) command: The size of the data following CMD is fixed to 3 bytes. (Communication

 

number: 2 bytes, checksum: 1 byte)

 

57H (W), 50H (P) and 47H (G) commands: The size of the data following CMD is fixed to 5

 

bytes.

 

(Communication number: 2 bytes, data: 2 byte, checksum: 1 byte)

 

Any command other than the above is rejected and no error code is returned.

4.Communication No.(2 bytes)

:Communication number (See 11, “Parameter data.”)

5. Data (2 bytes)

: 0000H to FFFFH

 

57H

(W) and 50H (P) commands: Write data (An area check is performed.)

 

47H

(G) command: Dummy data (e.g., 0000) is needed.

 

52H

(R) command: Any data is judged invalid. (No data should be added.)

6. Sum (2 bytes)

: Checksum (not omissible) 00H to FFH

Value of the last two digits (1 byte) of the sum of a series of bits (codes) from the start code of the data returned to the data (or to the communication number for the 52H (R) com- mand)

Ex.: 2F 52 00 ?? ... 2FH+52H+00H+00H=81H

The last two digits (??) represent the checksum= 81

„Details of commands and data

CMD (1 byte)

Write data (2 bytes) Hexadecimal number

52H

(R): RAM read command

No data

57H

(W): RAM/EEPROM write command

Write data (0000H to FFFFH)

50H

(P): RAM write command

Write data (0000H to FFFFH)

47H

(G): RAM read command (for two-wire networks)

Dummy data (0000H to FFFFH)

10

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Contents E6581315② Tosvert VF-AS1 Series RS485 Communication FunctionE6581315 Read first Safety precautionsContents Bit Word General outlines of the communication functionBIT15 BIT8BIT7 BIT0 BIT2 Data transmission specificationsMOUBUS-RTU Communication protocolAbout the handling of received frames Toshiba Inverter Protocol Binary mode 2FHData Data transmission format used in Ascii modeData transmission format INV-NO CMD28H Bytes Checksum area 5bytes BlankData SUM INV-NOData transmission format used in binary mode Sum 1 bytes Checksum not omissible 00H to FFH Command receivedReturned for the 57H W and 50H P commands Byte Bytes2FH Byte 4EH6EH Bytes NornTransmission format of Block Communication Page Bytes Blank Start Code INV-NO Block communication Computer Inverter CommandsDummy data is required for this command Reads the data with the specified communication numberRFE03077BCR RFE03CRPage Communication There is no communication number that matches Transmission errorsFormat error Data transmission format does not match Broadcast communication function VF-AS1 RFC90CR Examples of the use of communication commandsAscii mode Computer → Inverter Inverter → Computer From the computer H = 24d  trip statusExamples of Communication programs Goto =LENS$ For I=1 to LNext Input #1,B$Print #1,B$ 160 T=TIMER COUNT=TIMER-TIf Count 0 then T=TIMER Page Text2.Text = Text1.Text = End Sub End IfMSComm1.Output = Text2.Text & Chr13 End Sub Inverter number  MODBUS-RTU protocolCRC Read commandMODBUS-RTU transmission format Text size is 8 bytes fixed Inverter Write commandBlank Command 1 byte 5bytes Blank Command 1 byteEnd Return CRC Error codesCRC Generation Bit counter =Inter-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 speed80.00Hz 40.00Hz Slave 100.00Hz 00%90.00Hz 45.00Hz Slave 100.00Hz1 00%INV-NO 1 byte Inverter number Transmission format for inter-drive communication0OFF Communication parametersMODBUS-RTU Inverter number Baud rate,  , Parity INV INV → PC PC → INV „ Timer Time-out period Computer linkPC → INV Master INV To SlaveUse this function for the following case Send waiting time , Free notes OFF Commands and monitoring from the computerCommunication commands commands from the computer PI OFFBraking answer BA Electric Power quantityForcibly braked Preliminary excitation Brake release BWire RS485 communication FA32 Output terminal no Specified data output „ Terminal board output data FA50„ FM analog output FA51 „ AM analog output FA52Unit 0.01% N·m Monitoring from the computerRFD00CR BIT15 „ Input terminal board status FD06, FE06RES Input terminal function selection 9 f119„ 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, FE42Preset speed operation „ Inverter operating command mode status FD45, FE45„ Inverter operating frequency mode status FD46, FE46 Bit Specifications Remarks „ Alarm information monitor FC91„ Cumulative operation time alarm monitor FE79 E6581315 Model Data „ Inverter model capacity code FB05Utilizing panel LEDs and keys by communication LED setting by communicationParameter Name Range Setting „ Block Communication Function for LED Display Blank Ascii LED display data code 00H-1FH are blankFA10=1 Key utilization by communicationFA10=0 Parameter data ROM EEPPage FE29 Input power Alarm codeFE02 Frequency command value 01Hz FE19 Torque commandFE84 Binary input value option Tion FE80 Cumulative power on timeE6581315 FD50 Light-load high-speed torque 01% ESC Appendix 1 Table of data codesCan SUBResponse time „ Data transmission time Appendix 2 Response timeVF-A7 Appendix 3 Compatibility with the communication functionAppendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication TXB RXARXB TXA

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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