Baldor VS1MD instruction manual Introduction, Features, Before Installation

APPENDIX C

RS485 Protocol

C.1 Introduction

The drive can be controlled and monitored by the program of aPLC 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. Parameters can be set and changed through the PLC or PC.

C.1.1 Features

The VS1MD can easily be utilized for factory automation applications because operation and monitoring are available by the user’s program.

•Parameter change and monitoring is available via computer. (Ex: Accel/Decel time, Freq. Command etc.)

•RS484 Interface:

1.Allows the drive to communicate with any other computers or PLC’s.

2.Allows connection of up to 31 drives with multi-drop link network.

3.Inherent noise immune design.

Users can use readily available RS232-485 converters. The specifications of converters depend on the manufacturers.

C.1.2 Before Installation

ATTENTION: Before installation and operation, this manual should be read thoroughly. Failure to observe this precaution could result in

!personal injury or damage to the equipment.

RS485 Protocol C-1