Toshiba TOSVERT VF-AS3 Instruction Manual page 426

<F827: RS485 (2) protocol>
<F828: RS485 (2) time-out detection>
<F829: RS485 (2) wiring type>
<F830: MODBUS continuous address>
<F856: Motor pole number for communication>
<F870: Block write data 1>
<F871: Block write data 2>
<F875: Block read data 1>
<F876: Block read data 2>
<F877: Block read data 3>
<F878: Block read data 4>
<F879: Block read data 5>
<F899: Communication option reset>
■ Function
4
RS485 communication is built-in as standard.
It can be connected to the host to create a network for transmitting data between multiple inverters.
4
An inverter-to-inverter communication function is also available.
Communication function
6
1) Computer-linking functions
The following functions are enabled by data communication between the computer and
inverter.
• Monitoring inverter status (such as the output frequency, current, and voltage)
• Sending Run/Stop and other control commands to the inverter
• Reading, editing and writing inverter parameter settings
9
2) Inverter-to-inverter communication function
This function allows you to set up a network that makes it possible to carry out proportional
operation of multiple inverters. A host computer is not required.
One inverter serves as a leader and sends data selected with the parameter to other inverters
that are followers in the same network. By using this function, you can configure a network for
easy synchronized operation and proportional operation (setting of point frequency).
Time-out
This is a function to detect cable disconnection during communication.
When data is not sent even once to the inverter during a user-defined period of time, an
inverter trip ("Err5" is displayed on the panel) or an alarm("t" is blinking) is output.
Broadcast communication
This is a function used to send a command (data write) to multiple inverters with single
communication.
Communication protocol
Toshiba inverter protocol and a part of Modbus RTU protocol are supported.
6. [Advanced] How to use parameters
F807 : RS485(1) Protocol
0: TOSHIBA
1: MODBUS (Continuous address)
2: 002
6-184
E6582062
STOP 0.0Hz
13:34