1
Modbus Box Quick Guide
V.1.1
Thank you for purchasing Modbus box. This manual contains instructions and warnings that
should be followed during the installation, operating and storage of the card. Please keep this
manual for further reference.
Special Precautions
If the Modbus box must be stored prior to installation; storage must be in a dry place
The admissible storage temperature range is from -10
º
C to +70
º
C.
1. Product Overview
RS-232 port
RS-485 port
5V DC input
RS232 TXD LED
RS232 RXD LED
Power indicator
2. Product Introduction
The Modbus box provides inverter with the functionality of communication with PCs through
MODBUS protocol:
Implements MODBUS RTU protocol
Provides MODBUS functions including read Holding Registers and write Registers.
Provides RS485 interface
Provides surge protection
