VF-FS1 Industrial Inverter - Toshiba
VF-FS1 Industrial Inverter - Toshiba
VF-FS1 Industrial Inverter - Toshiba
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6.21.2 Using the RS485<br />
Setting the communication functions<br />
F-85<br />
E6581381<br />
Setting commands and frequencies by communications has priority over sending commands from the<br />
operation panel or the terminal board. Command/frequency setting by communications can therefore be<br />
enabled, irrespective of the setting in the command mode () or the frequency setting mode ().<br />
When inverters are connected to each others, however, in order for slave inverters to recognize frequency<br />
signals from the master inverter as frequency commands, the frequency setting mode selection 1 parameter<br />
() provided for each slave inverter needs to be set to 4 (serial communications). Refer to the<br />
COMMUNICATIONS EQUIPMENT USER'S MANUAL for details.<br />
However, when the input terminal function selection parameter is set to 48: SC/LC (Serial/Local selection),<br />
the inverter can be operated with the settings of the command mode () or the frequency setting mode<br />
() by external input.<br />
Transmission specifications<br />
Item Specifications<br />
Transmission scheme 2-wire, Half-duplex<br />
Connection scheme Centralized control<br />
Synchronization scheme Asynchronous<br />
Transmission rate Default: 19200 baud (parameter setting)<br />
Option: Either 9600 or 19200 baud<br />
Character transmission ASCII code: JIS X 0201 8, 8-bit (fixed)<br />
Binary code: Binary, 8-bit (fixed)<br />
Stop bit length <strong>Inverter</strong> receiving: 1 bit, <strong>Inverter</strong> sending: 2 bits<br />
Error detection Parity: Even, Odd, or None selectable by parameter setting;<br />
check sum method<br />
Character transmission format Receiving: 11-bit, Sending: 12-bit<br />
Order of bit transmission Least significant bit first<br />
Frame length Variable to a maximum of 17 bytes<br />
Example of connection for RS485-communication<br />
<br />
Host computer<br />
<strong>VF</strong>-<strong>FS1</strong> <strong>VF</strong>-<strong>FS1</strong> <strong>VF</strong>-<strong>FS1</strong> <strong>VF</strong>-<strong>FS1</strong><br />
Option<br />
6