Bộ dữ liệu tập trung Modbus 4xRS-232 + 1xRS-485 + 1xEthernet ICP DAS MDC-741 CR

Thương hiệu: ICP DAS | Tình trạng: Còn hàng
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Modbus Data Concentrator with 1 x Ethernet and 4 x RS-232, 1 x RS-485

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Bộ dữ liệu tập trung Modbus 4xRS-232 + 1xRS-485 + 1xEthernet ICP DAS MDC-741 CR


  • Supports Modbus master/slave on the serial port and Modbus TCP slave on the Ethernet interface
  • Supports up to 8 simultaneous Modbus TCP connections at one time
  • Data pool for up to 9600 registers
  • Modbus polling commands for up to 250 definitions
  • Easy configuration with a simple CSV file for quick start-up
  • HTML5 Web-based user interface


MDC-700 series is a Modbus Data Concentrator that has ability to perform up to 250 Modbus/RTU commands to read/write from/to Modbus slave devices via RS-232/485 and allows up to 8 Modbus/TCP masters to get the polled data via the Ethernet. MDC-700 series provide a built-in web server to ease the configuring and provide clear information for the performed results of each Modbus/RTU command on the RS-232/485.

Modbus Data Concentrator
The MDC performs the pre-defined Modbus/RTU commands to read/write data from/to the Modbus/ RTU slave devices via the RS-232/485. It mirrors the data of the slave devices to its own shared memory. And it accepts up to 8 Modbus/TCP masters to directly read/write data form/to the shared memory instead of polling each Modbus/RTU slave device one by one. This way not only makes the data on the RS-232/485 sharable to multiple Modbus/TCP master but also shorten the time to read/write data from/to multiple Modbus/RTU slave devices.

Great Capability of Shared Memory
The MDC can perform up to 250 polling definitions. And the internal shared memory has four tables to store the polled AI, AO, DI and DO data. Each table can store up to 9600 registers.

Config.CSV to Ease Hard Work of Editing a lot of Definition
The Modbus polling definition is defined in a Config.CSV file. Editing/checking a lot of polling definitions is a hard work and may have chance to make a mistake. A CSV format file can ease the work by using Excel. Furthermore, the built-in web server allows users import/export the Config.CSV via a simple mouse-click action.

Web Sever to Ease the Operating and Show Clear Information
The IP address, configuration file, Config.CSV can be simply configured via the Web server. And the performed results of all Modbus polling definition are shown on the web page. It is very easy to debug which Modbus/RTU device has communication problem. And the MDC firmware will skip the abnormal Modbus polling definition for a while to smoothly perform the whole polling without distribution.



Type 5 x Digit 7 Segment LED Display
LED Indicators
Status 1 x System, to display heart beat
COM Ports
Ports 4 x 5-wire RS-232
1 x 2-wire RS-485
Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data Format N81, E81, O81
Protocol Modbus RTU Master/Modbus RTU Slave
Polling Definition 250 definitions for all RS-232/485 ports
Shared Memory 9600 registers for each of AI, AO, DI and DO data
Ports x1, 10/100 Base-TX
Protocol Modbus/TCP Slave
Input Range +10 VDC ~ +30 VDC (non-regulated)
Consumption 2.5 W
Casing Metal
Dimensions (mm) 102 mm x 125 mm x 28 mm (W x H x D)
Installation Wall Mounting
Operating Temperature -25 ~ +75 °C
Storage Temperature -30 ~ +80 °C
Humidity 10 ~ 90% RH, non-condensing




Ordering Information

MDC-741     CR  Modbus Data Concentrator with 1 x Ethernet and 4 x RS-232, 1 x RS-485 (RoHS)

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