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Modbus Box Quick Guide
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 -10ºC to +70ºC.
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
1
V.1.1
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Summary of Contents for FSP Technology Modbus Box
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Page 1: Product Overview
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 -10ºC to +70ºC. -
Page 2: Installation And Operation
Modbus Box Quick Guide V.1.1 3. Installation and Operation Follow below steps to install and use this modbus box: Remove top case by removing screws. See below chart. Configure Modbus ID (Refer to section 4.1 for the details). Configure communication format (Refer to section 4.2 for the details). - Page 3 Modbus Box Quick Guide V.1.1 4. Configuration 4.1 Machine ID Configuration There are eight bits to present ID of each card. Use SW1 to set machine ID. From left to right, it’s 8 to 1. As shown, when the switch is pushed down, the bit is set to “one”.
- Page 4 Modbus Box Quick Guide V.1.1 4.3 RS-485 Resistance Configuration Function Bit # Setting Meaning Push up Enable (Default) resistance Disable Push down Enable (Default) resistance Disable Terminate Enable (Default) resistance Disable 4.4 Interface Configuration RS-485 Pin Configuration Function RS-485 - B...
- Page 5 Modbus Box Quick Guide V.1.1 4.5 Connection First, please use one RS485 to RS 232 converter or RS-485 to Modbus/TCP converter as media converter between Modbus card and computer. Please follow below chart for wiring connection between RJ45 and media converter: Wiring connection between RJ45 and media converter APPENDIX: Machine ID Configuration Table (SW1) √=ON ×=OFF...
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