Remote Communication
7.1 Introduction
The GX drive can be controlled and monitored by the sequence program of the PLC or
other master module.
Drives or other slave devices may be connected in a multi-drop fashion on the RS-485
network and may be monitored or controlled by a single PLC or PC. Parameter setting and
changes are available through PC. Note that if Modbus RTU RS-485 communications are
necessary an optional communication card is required. Contact Benshaw for more
information regarding Modbus RTU applications.
7.1.1 Features
The drive can be easily applied for Factory automation because Operation and monitoring
is available by User-program.
* Parameter change and monitoring is available via computer.
(Ex: Accel/Decel time, Freq. Command etc.)
* Interface type of RS485 reference:
1) Allows the drive to communicate with any other computers.
2) Allows connection of up to 31 drives with multi-drop link system.
3) Noise-resistant interface.
Users can use any kind of RS232-485 converters. The specifications of converters depend
on the manufacturers. Refer to the converter manual for detailed specifications.
7.1.2 Connection Guide for RS485 Communication with PC , PLC and RS232/485
7.1.3
Before Installation
Before installation and operation, this should be read thoroughly. If not, it can cause
personal injury or damage to other equipment.
130
7 - Remote Communication
PC
Inverter #1 Inverter #2 Inverter #n
RS232/485
Converter
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