E6581315

2. Data transmission specifications

Items

Specifications

 

 

 

 

Transmission scheme

Half-duplex

*: Standard

Synchronization scheme

Start-stop synchronization

default setting

Communication baud rate

9600/19200*/38400 bps (selectable using a parameter) *1

 

Communication protocol

TOSHIBA Inverter Protocol * / MODBUS-RTU (selectable using a parameter) *1

Character transmission

<ASCII mode> JIS X 0201 8-bit (ASCII)

 

 

<Binary mode, MODBUS-RTU> Binary codes fixed to 8 bits

 

Stop bit length

Received by inverter: 1 bit, Sent by inverter: 2 bits *3

 

Error detecting scheme

Parity *2: Even */Odd/Non parity (selectable using a parameter) *1,

 

 

checksum(Toshiba inverter protocol), CRC(MODBUS-RTU)

 

Character transmission

11-bit characters *1 (Stop bit=1, with parity)

 

format

 

 

Order of bit transmission

Low-order bits transmitted first

 

Frame length

Variable (to a maximum of 17 bytes)

 

*1: Changes to setting do not take effect until the inverter is turned back on or reset.

*2: JIS-X-0201 (ANSI)-compliant 8-bit codes are used for all messages transmitted in ASCII mode and vertical (even) parity bits specified by JIS-X-5001 are added to them. These even parity bits can be changed to odd parity bits by changing the parameter setting (a change to the parameter setting does not take effect until the inverter has been reset.)

*3: Here are the default character transmission format.

Characters received: 11 bits (1 start bit + 8 bits + 1 parity bit + 1 stop bit)

START BIT

BIT0 BIT1 BIT2 BIT3 BIT4 BIT5 BIT6

PARITY STOP

BIT7 BIT BIT

The inverter receives one stop bit.

(The computer can be set so as to send 1, 1.5 or 2 stop bits.)

Characters sent: 12 bits (1 start bit + 8 bits + 1 parity bit + 2 stop bits)

START

BIT

BIT0 BIT1

BIT2

BIT3 BIT4 BIT5 BIT6 BIT7

PARITY STOP STOP

BIT BIT BIT

The inverter sends two stop bits.

(The computer can be set so as to receive 1, 1.5 or 2 stop bits.)

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Toshiba VF-AS1 Series, RS485 instruction manual Data transmission specifications, BIT2

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.