Modbus Card

Currently the centralized monitoring system of the large power computer room not only includes the main equipments, but also integrates power and environmental monitoring in one. In order to be compatible with more devices, such monitoring system adopts the popular Modbus communication protocol. But the common UPS only provides one RS232 interface, since it cannot connect to multiple devices and the communication protocol generally can’t satisfy multi-device trunk mode to be communicated according to IP address, thus such integrated monitoring device cannot be achieved. And then Modbus protocol conversion equipment is needed. Modbus card is intelligent protocol converter equipment, developed while adapting to the current market demand for power centralized monitoring applications.

Modbus Card
Modbus Card
Use Modbus protocol to communicate with protocol conversion equipment through RS485;
Accomplish the conversion between UPS EA protocol and Modbus/RS485/TCPIP;
Use the conversion card to connect the UPS to the RS485 trunk to accomplish the integrated management of different devices;
Working condition indicator directly shows the power, communication and fault information of the Modbus conversion device;
With internal and external types for different demands;
Customizable for certain device and change the conversion device into Modbus protocol;
Serial communication interface (SCI) has 3 types of outputs (RS485+RS232 or CAN+RS232 or RS232), can do expansion;
Device parameter and firmware program can be updated through Ethernet;





Plug Card

External Card


RS232 to RS485+RJ45

RS232 to RS485+ RJ45 

Network Interface

10/100Mbps High-speed Ethernet adaptive 

Serial Interface


Network protocol


LED Indicator

Power, Status, Fault, LAN 10/100M Link/Active

Input power(DC)


Power consumption


Operating Environment

Temperature: 0°C ~ 50°C,Humanity: 10 ~ 80%

Other device

Real-time system clock

Software upgrade

FTP remote network upgrade


Modbus Card Datasheet - PDF

Online Support