E6581315

4.4. Broadcast communication function

Broadcast communication function can transmit the command (write the data) to multiple inverters by one communication. Only the write (W, P) command is valid and the read (R, G) command is in- valid. The inverters subject to the broadcast communication are the same to the independent com- munication; 0 to 99 (00H - 63H) in the ASCII mode, and 0 to 63 (00H - 3FH) in the binary mode. To avoid data deforming, the inverters to return data will be limited.

„“Overall” broadcast communication (ASCII mode / Binary mode)

- ASCII Mode

If you enter two asterisks (**) in the inverter number position of the data transmission format, the computer will send the data simultaneously to all inverters (with an inverter number between 0 and 99 (00 to 63H)) on the network.

- Binary Mode

To put "FF" to the specified place of the inverter number in the communication format validates the broadcast communication and the command is transmitted to all the applicable inverters in the net- work (inverter numbers from 0 to 63 (00 to 3FH)).

<Inverter that returns data to the computer>

Data is returned from the inverter bearing the inverter number 00 only.

If you do not want inverters to return data, do not assign the number 00 to any inverter on the net- work.

„“Group” broadcast communication (ASCII mode only)

If you put “*?” In the inverter number position of the data transmission format, data will be sent simultaneously to all inverters bearing a number whose digit in the one’s place in decimal notation is”?”

If you put ”?*” In the inverter number position of the data transmission format, the data will be sent simultaneously to all inverters bearing a number whose digit in the ten’s place in decimal notation is”?”.

(“?”: Any number between 0 and 9.)

<Inverter that returns data to the computer>

Data is returned only from the inverter bearing the smallest number in the same group of inverters (i.e., inverter whose number in the position of ”*” is 0).

If you do not want inverters to return data to the computer, do not assign a number having a 0 in the position of “*” to any inverter on the network.)

„Examples of broadcast communication

Ex: Set the frequency setting for communication to 60Hz.

1Host computer → Multiple inverters: broadcast communication (ASCII Mode)

Example of transmission of data from host computer to inverter: (**PFA011770)CR

Example of data returned from inverter to host computer: (00PFA011770)CR

Data is returned from the inverter numbered 00 only, while commands are issued to all inverters connected to the network.

2Host computer → A specific group of inverters: group communication (ASCII Mode)

Example of transmission of data from host computer to inverters: (*9PFA011770)CR

Example of data returned from inverter to host computer: (09PFA011770)CR

Data is returned only the inverter numbered 09 only, while commands are issued to a maximum of 10 inverters bearing the number 09, 19, 29, 39, ... or 99.

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Toshiba RS485, VF-AS1 Series instruction manual Broadcast communication function
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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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