Configuration - ICP DAS USA MDC-700 Series User Manual

2. Configuration
The necessary configuration for Modbus TCP communication, Modbus RTU communication and
polling definition is handled by a single file named "config.csv". Just follow the easy‐to‐use format
defined in the config.csv file and import the new config.csv file via a simple mouse‐click on the main
page of the MDC‐700, the data on those Modbus RTU slave devices can be accessed over an
Ethernet.
Only the Function code 01/02/03/04 can be used in the config.csv file:
01: Read Coil Status (Read DO)
02: Read Input Status (Read DI)
03: Read Holding Registers (Read AO)
04: Read Input Registers (Read AI)
If you would like to write data to a digital or analog output channel on a Modbus RTU slave device,
the output channel needs be mapped with a local register address in the MDC‐700 by editing the
polling definition with using corresponding read function code (01 or 03). Refer to Q4 in the 4. FAQ
section for more detailed information.
The following section will help you to set up your MDC‐700 module, and show you how to use the
web interface to obtain configuration and other information related to the MDC module and
associated slave devices.
Basic operating procedure
Step 1: Assign a valid IP address to the MDC‐700.
Step 2: Edit the config.csv file.
Note that before editing this file, you should confirm the parameter value for any
associated Slave devices.
Step 3: Upload the config.csv file to the MDC module.
Step 4: Verify the status of both the connection and the configuration by browsing the web.
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