Introduction - ICP DAS USA MDC-714i User Manual

1. Introduction

The MDC-700 series module is a Modbus Data Concentrator which can concentrate data from
several Modbus RTU slave devices with RS232/RS-485 interface and allows Modbus TCP masters to
read/write data via Ethernet/LAN. The Modbus master can use one Modbus command to get all data
on those Modbus RTU slave devices via the MDC-700 concentrator. In other words, through the help
of a MDC-700 module, the Modbus RTU slave devices can be accessed over Ethernet with better
read and write performance.
The MDC-700 series module has the ability to perform up to 250 Modbus RTU commands to
read/write data from/to Modbus RTU slave devices and allows up to 8 Modbus TCP masters to get
the polled data. The support for Modbus TCP protocol makes the MDC-700 well integrated into
PC-based applications such as SCADA (Supervisor Control and Data Acquisition) and HMI (Human
Machine Interface) programs.
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