ICP DAS MDC-211-WF User manual

Download

MDC-211-WF

User Manual

Warranty

All products manufactured by ICP DAS are under warranty regarding

defective materials for a period of one year, beginning from the date of

delivery to the original purchaser.

Warning

ICP DAS assumes no liability for any damage resulting from the use of

this product. ICP DAS reserves the right to change this manual at any

time without notice. The information furnished by ICP DAS is believed to

be accurate and reliable. However, no responsibility is assumed by ICP

DAS for its use, or for any infringements of patents or other rights of

third parties resulting from its use.

Trademarks

Names are used for identification purposes only and may be registered

trademarks of their respective companies.

Technical Support

If you have any problems, feel free to contact us via email at

service@icpdas.com.

ICP DAS, MDC-211-WF user manual , v1.1 Page 1

Table of Contents

1. Introduction ............................................ 3

1.1. Introduction to MDC-211-WF ................................................................................. 3

1.2. Product Features ....................................................................................................... 4

1.3. Specifications ............................................................................................................ 7

1.4. Size (Unit : mm) ........................................................................................................ 8

1.5. Configuration Instructions ...................................................................................... 9

2. Getting Started With MDC-211-WF ...................... 10

2.1. Preparation .............................................................................................................. 11

2.2. Login MDC-211-WF Web Interface ...................................................................... 14

2.3. Set Port Information .............................................................................................. 15

2.4. Set MDC-211-WF as Modbus Master ................................................................... 18

2.5. Set MDC-211-WF as Modbus Slave ...................................................................... 20

2.6. Check Modbus RTU Device Communication Status ........................................... 21

2.6.1. Check polling status of Modbus command ...................................................... 21

2.6.2. Inquire Corresponding Modbus Register Address .......................................... 23

2.6.3. Testing I/O Channel Status of Modbus RTU Device ........................................ 24

3. Export and Import the System Settings .................. 25

3.1. Export and Import the Configurations ................................................................ 25

3.2. Format Descriptions for the Configuration File (*.csv) ...................................... 27

4. Parameter Descriptions ................................. 34

4.1. Communication Interface Parameter Descriptions ............................................ 34

4.1.1. Wi-Fi Communication Interface ........................................................................... 34

4.1.2. Serial Port Communication Interface ................................................................. 35

4.2. Modbus Protocol Parameter Descriptions .......................................................... 36

4.2.1. Modbus Master Setting Parameters ................................................................... 36

4.2.2. Modbus Slave Setting Parameters ...................................................................... 37

ICP DAS, MDC-211-WF user manual , v1.1 Page 2

5. FAQ ................................................... 38

Q1 - What are the maximum numbers of polling definition and Internal Register in a

MDC-211-WF? .................................................................................................................... 38

Q2 - What is the maximum number of data can be accessed in one command from a

Modbus Master device? .................................................................................................... 38

Q3 - How are the Internal Registers corresponding to the polled data in a MDC-211WF? 38

Q4 - How to read each MDC-211-WF command status via the Modbus communication? 38

Q5 - How to update the firmware? .................................................................................. 40

6. Appendix .............................................. 43

6.1. LED Indicator State Descriptions .......................................................................... 43

ICP DAS, MDC-211-WF user manual , v1.1 Page 3

1. Introduction

This section describes the functions, features, software, and hardware specifications of the

MDC-211-WF Modbus data concentrator.

1.1. Introduction to MDC-211-WF

◆ Functions

MDC-211-WF Modbus data concentrator developed by ICP DAS, with Ethernet, Wi-Fi

Wireless, RS-232 and RS-485 communication interfaces, can link the Modbus RTU devices to

the Ethernet network. MDC-211-WF can read the data of Modbus RTU device according to

the user-defined command table, and integrate the data of different Modbus RTU devices

into the format of the continuous address so that the remote monitor host can connect to

MDC-211-WF from Ethernet to access the data of multiple Modbus RTU devices at once.

Through MDC-211-WF's Modbus data centralized management function, as well as the

Ethernet network convenient link and the communication ability, can quickly establish the

stable remote monitoring system, let the user be able to easily simplify the data acquisition

difficulty, and reduces the Ethernet network traffic load, enhances the system efficiency.

◆ Advantages

The advantages of MDC-211-WF Modbus data concentrator, not only to help users

manage the Modbus RTU devices near the RS-232 and RS-485, even in the distance tough

cabling environment, can through the Wi-Fi wireless communication advantages, easy to link

the Modbus RTU devices.

In particular, in the widely used Supervisory Control and Data Acquisition (SCADA), with

simple settings, MDC-211-WF Modbus data concentrator can link the distributed Modbus

RTU devices to the Ethernet network, which is the best solution for the user to establish the

remote monitoring control system quickly.

ICP DAS, MDC-211-WF user manual , v1.1 Page 4

1.2. Product Features

◆ Support Modbus RTU Master

The Wi-Fi, RS-485, or RS-232 on the MDC-211-WF can be set as Modbus Master. MDC-

211-WF can read the data of the Modbus RTU device according to the user-defined command

table, and integrate the data of different Modbus RTU devices into the format of the

continuous address for centralized management.

◆ Support Modbus TCP/RTU Slave

The Wi-Fi, RS-485, RS-232 or Ethernet on the MDC-211-WF can be set as Modbus Slave,

so the control host can access multiple Modbus RTU devices via MDC-211-WF at once.

By establishing the function of Modbus Master and Modbus Slave, the Modbus data

monitoring control system will be more efficient, stable and flexible to meet the diverse

application sites.

◆ Support Web-based UI Operations

MDC-211-WF provides a simple, friendly Web interface (UI), users can login the MDC-

211-WF Web page via a Web Browser to set up and real-time detect the MDC-211-WF for

the communication status and update frequency of each Modbus RTU command.

ICP DAS, MDC-211-WF user manual , v1.1 Page 5

◆ Support Parameter Setting via CSV File

CSV (Comma-Separated Values) is a text file format that can be edited in spreadsheet

software or plain text files and has the advantage of being easy to use, read and maintain.

MDC-211-WF parameter setting includes the Modbus TCP communication ID and port

number, the Serial port communication parameters and the Modbus RTU commands that

settings can also be edited in a *.csv file and import into the MDC-211-WF from the Web UI,

and then start to monitor the data of the remote Modbus RTU devices.

◆ Support Wi-Fi Communication Protocol

The MDC-211-WF support Wi-Fi standard (IEEE 802.11 a/b/g/n). User can access the data

of Modbus/RTU by Wi-Fi. User can reduce the wire because of wireless communication.

Otherwise, the MDC-211-WF also support 5 GHz. The 5 GHz can avoid the other interferences

from 2.4 GHz.

MDC-211-WF supports two Wi-Fi modes. One is Wi-Fi AP(Limit-AP). The other is AP Client

(Infrastructure) mode. The following figure has shown the application of each mode.

ICP DAS, MDC-211-WF user manual , v1.1 Page 6

1. Limit-AP Mode

The MDC-211-WF is a Modbus/RTU to Modbus/TCP gateway in Limit-AP mode. The

device can connect to MDC-211-WF by Wi-Fi. The device can connect to the WF-2572M

when it didn’t have Wi-Fi function. The device can send Modbus/TCP command to acquire

data from Modbus/RTU device.

2. Infrastructure mode

The MDC-211-WF is a Wi-Fi AP client in the Wi-Fi infrastructure mode. The MDC-211-

WF can connect to other Wi-Fi AP. The SCADA/HMI and control center can connect

together by Ethernet switch. The device can send Modbus/TCP command to acquire data

from Modbus/RTU device.

RS-485

M-7000 tM

DL-100 PM-3000

PAC

RS-232

MDC-211-WF

(Limit APMode)

SCADA/HMI

Ethernet

WF-2572M

Control Center

Wi-Fi

2.4/5 GHz

RS-485

M-7000 tM

DL-100 PM-3000

PAC

RS-232

MDC-211-WF

(Infrastructure Mode)

APW77BAM

(Wi-Fi AP)

Switch

SCADA/HMI

Ethernet

Control Center

Wi-Fi

2.4/5 GHz

ICP DAS, MDC-211-WF user manual , v1.1 Page 7

1.3. Specifications

MDC-211-WF

Radio Standard

Standard

IEEE 802.11 a/b/g/n

Band

2.4 GHz: CH1~11; 5 GHz: CH36、40、44、48

Mode

Limit-AP/Infrasturcture

Encryption

Open/WEP/WPA/WPA2

Antenna

Omni-Directional; 3 dBi @ 2.4 GHz; 5.5 dBi @ 5 GHz

Transmit Range (LOS)

50 m (LOS)

Protocol

Modbus TCP slave

Ethernet Network

Port

x1, 10/100 Base-TX

Protocol

Modbus TCP Slave

Serial port (COM)

RS-232

x1, (TxD, RxD and GND)

RS-485

x1, (D+, D-)

Baud Rate

1200 ~ 115200 (bps)

Data Format

N81, N82, O71, O81, E71, E81, S71, S81, M71, M81

Protocol

Modbus RTU Master/Slave

Polling Definition

Up to 240 Modbus command definitions for all Wi-Fi/RS232/ RS-485 ports

Shared Memory

9600 registers for each of AI, AO, DI and DO data

Institutions

Casing

Metal

Dimensions (L x W x H)

120 mm x 33 mm x 116 mm

Installation

DIN-Rail

Power

Required Supply Voltage

+10 VDC ~ +30 VDC

Power Consumption

5 W @ 24 VDC

Environment

Operating Temperature

-25°C ~ +75°C

Storage Temperature

-30°C ~ +80°C

Humidity

10~90% RH, Non-condensing

ICP DAS, MDC-211-WF user manual , v1.1 Page 8

1.4. Size (Unit : mm)

Top view

Right view

Front view

Bottom view

Post view

Left view

ICP DAS, MDC-211-WF user manual , v1.1 Page 9

1.5. Configuration Instructions

Antenna

LED Indicator

MicroSD Card

Ethernet Port Terminal Block

The MDC-211-WF is equipped with a RJ45 port for

Ethernet LAN connection. When 100BASE‐TX is

operating, the 10/100M LED is lit orange. When

10BASE‐T is operating or the machine is not connected

to the network, it is turned off. When an Ethernet link is

detected and an Ethernet packet is received, the Link/Act

LED is lit green.

RS-232

FW (Update)

RS-485

INIT

Power

2. Getting Started With MDC-211-WF

This chapter mainly describes the operation process of the MDC-211-WF, such as, how

to use the MDC-211-WF Web interface via browser, and set up the Modbus Master and

Modbus Slave function for the Modbus data concentrator.

◆ MDC-211-WF Setting Flowchart

Preparation

•Hardware wiring

•Set the MDC-211-WF and PC to the same local area network. (The default IP address of

MDC-211-WF is 192.168.255.1)

Web Login

•Launch the browser and enter the IP address of MDC-211-WF

•login MDC-211-WF (Both the default account and password are "Admin")

•Change a new account/password for higher security

Port

Settings

•Configure communication port settings according to the user needs.

Modbus

Master

•Set the communication interface to Modbus Master according to the actual requirements, and adjust the related setting parameter values.

•Add Modbus RTU commands to specific communication port for Modbus data

acquisition.

Modbus

Slave

•Set the communication interface to Modbus Slave according to the actual requirements, and set its Modbus Slave ID.

System

Backup

•Export: Export the MDC-211-WF setting parameters to a. csv file for backup.

•Import: Import the configurations into the MDC-211-WF via a .csv file.

Check

Polling State

•Check the polling state of each Modbus commands.

•Get the address mapping table between the remote Modbus RTU devices and Internal

Registers of MDC-211-WF.

2.1. Preparation

Before setting up the MDC-211-WF, please complete the necessary preparation,

including hardware wiring, IP address settings, and so on, this section describes each.

◆ Hardware Wiring

Please follow Figure 2.1 wiring diagram, to wire the following items:

1. Power Supply : +10 VDC ~ +30 VDC

2. RS-485：D+ & D-

3. RS-232：TxD / RxD / GND

4. Ethernet：Connect the MDC-211-WF and computer into the same LAN through cable or

Ethernet Switch/Hub.

Figure 2.1 MDC-211-WF Wiring Diagram

RS-485

F.G.

P.GND

PWR

INIT

D-

D+

GND

RxD

TxD

RS-232

Power

Supply

Link/Act

10/100M

◆ Modifying IP address

Before connecting the MDC-211-WF, please set the MDC-211-WF to be the same LAN

as the PC. Tables 2.1 shows the default network setting of MDC-211-WF. If it is in the different

network area, please adjust network settings by the following software.

(1) eSearch Utility

http://ftp.icpdas.com/pub/cd/tinymodules/napdos/software/esearch/windows/

Table 2.1 Factory default network settings of MDC-211-WF

192.168.255.1

Mask

255.255.0.0

Gateway

192.168.0.1

The following steps show how to modify the MDC-211-WF network settings through

eSearch Utility:

Steps 1 Click “Search Server” button to search for MDC-211-WF module

Steps 2 Select “MDC-211-WF”, and click “Configuration (UDP)” button, as shown in Figure 2.2

Fiagram 2.2 eSearch Utility operator interfaces

Step 3 Configure the network parameters in the pop-up settings window, and click "OK"

button to modify the network settings, as shown in Figure 2.3.

Figure. 2.3 Network parameter setting interface

Step 4 Finally, click "Search Server" button again to find the MDC-211-WF module, to confirm

that the network settings has been modified successfully.

2.2. Login MDC-211-WF Web Interface

This section describes how to login the MDC-211-WF Web interface.

Step1 Once the PC and MDC-211-WF are in the same LAN, user can login the MDC-211-WF

by entering the IP address on Web browser (IE11/Chrome/Firefox, resolution 800 x 600

or more is recommended), the login screen is shown as Figure 2.4:

Figure 2.4 Product Login Page

Step2 Enter the account and password for the MDC-211-WF Web page (case-insensitive)

and click the "Login" button.

- Default Account : Admin

- Default Password : Admin

Step3 Click "System Information" → "Account Management" to modify account and

password for higher security, as shown in Figure 2.5

Figure 2.5 Account Management

2.3. Set Port Information

MDC-211-WF provides one port Wi-Fi, one port Ethernet, one port RS-232 and one port

RS-485 communication interface, this section introduces the configuration procedure for

these communication interface.

◆ Wi-Fi Port Setting

Click "Module Setting" → "Wi-Fi", to read the current Wi-Fi setting parameters, if user

want to adjust the Wi-Fi settings, click the "Modify" button to switch to the configuration

page, as shown in Figure 2.6.

Figure 2.6 Steps to switch to the Wi-Fi configuration page

For the description of the Wi-Fi settings, please refer to section “4.1.1 Wi-Fi

Communication Interface”. After modifying the setting parameters, please remember to click

"Save" button to save the changes, or click the "Cancel" button to discard the configuration

and return to the previous page.

NOTE - The new Wi-Fi settings will take effect immediately after configuration without

restarting the power of the MDC-211-WF.

◆ Ethernet Port Setting

Click "Module Setting" → "Ethernet", to read the current Ethernet setting parameters, if

user want to adjust the Ethernet settings, click the "Modify" button to switch to the

configuration page, as shown in Figure 2.7.

Figure 2.7 Steps to switch to the Ethernet configuration page

After modifying the setting parameters, please remember to click "Save" button to save

the changes, or click the "Cancel" button to discard the configuration and return to the

previous page.

NOTE - The new Ethernet settings only take effect after restarting the power of the MDC-

211-WF.

◆ Serial Port Setting

Click "Module Setting" → "Serial Port", to read the current RS-232 and RS-485 setting

parameters, if user want to adjust the configurations of Serial Port, click the "Modify" button

to switch to the configuration page, as shown in Figure 2.8.

Figure 2.8 Steps to switch to the Serial Port configuration page

For the description of the Serial Port settings, please refer to section “4.1.2 Serial Port

Communication Interface". After modifying the setting parameters, please remember to click

"Save" button to save the changes, or click the "Cancel" button to discard the configuration

and return to the previous page.

NOTE - The new Serial Port settings will take effect immediately after configuration without

restarting the power of the MDC-211-WF.

2.4. Set MDC-211-WF as Modbus Master

Each Wi-Fi/RS-232/RS-485 communication interface on MDC-211-WF can be either set

as Modbus Master or Modbus Slave. This section describes how to set the communication

interface as the Modbus Master, and add the Modbus RTU devices to be monitored.

◆ Read current Modbus protocol setting values

Click "Module Setting" → "Modbus RTU/TCP", to read the current setting parameters of

the Modbus RTU/TCP protocol for each communication interface, if user want to modify these

configurations, click the "Modify" button to switch to the configuration page, as shown in

Figure 2.9.

Figure 2.9 Steps to switch to the Modbus protocol configuration page

◆ Set the specified communication interface as Modbus Master

Click the "Module Setting" → "Modbus RTU/TCP" → "Wi-Fi/RS-232/RS-485", to select

the to “Modbus Master” in the "Modbus Mode" configuration field. For the description of the

Modbus Communication Interface settings, please refer to section “4.2 Modbus Protocol

Parameter Descriptions".

◆ Add the Modbus RTU devices that want to control

Step1 After setting the protocol to Modbus Master (refer to Figure 2.9), click the icon " "

at the bottom of "Modbus Device" to add a Modbus RTU Slave device and give the

module name (up to 12 ASCII characters) and Modbus address (the Slave station

number (1~255) of the Modbus RTU).

Step2 Following the Figure 2.10, click the icon " " at the bottom of Modbus RTU Slave

module to add a Modbus RTU Register, and set the Modbus Function Code, Start

address, Length and Range of the Register.

Figure 2.10 Add Modbus RTU Slave Module/Register window

Step3 After settings, click "OK" for saving the changes. If you want to discard the changes

please click "Cancel" go back to the previous page. If you want to remove the Modbus

2.5. Set MDC-211-WF as Modbus Slave

One of the MDC-211-WF Wi-Fi/RS-232/RS-485 ports can be set as Modbus Master or

Modbus Slave (Ethernet port can only be used as Modbus Slave). This section describes how

to set the communication interface as Modbus Slave.

◆ Set communication interface to Modbus Slave

Click "Module Setting" → "Modbus RTU/TCP" → click "Modify" → Select the one of

the " Wi-Fi / RS-232 / RS-485" and set "Modbus Status" as Modbus Slave. Finally, set the

station number (1~255) of MDC-211-WF as the Modbus Slave.

Figure 2.11 Modbus RTU/TCP Protocol parameter setting page

◆ Modbus Internal Register Address of MDC-211-WF

When MDC-211-WF as Modbus Slave, the external controller can indirectly read the data

of the Modbus RTU devices, for its corresponding Modbus Register information, refer to "2.6.2

Inquire Modbus Inner- register address of the corresponding relationship".

2.6. Check Modbus RTU Device Communication Status

The user can view and monitor the status of each Modbus command directly on the

MDC-211-WF Web interface. This section describes how to check the Modbus command

status, real-time monitor the I/O channel status of Modbus RTU device, and inquire the

relationship for the Modbus RTU device I/O and the MDC-211-WF Internal Register address.

2.6.1. Check polling status of Modbus command

Click "I/O Information" → "Internal Register", the browser will load the Modbus

command real-time information as Figure 2.12, the descriptions please see Table 2.2.

Figure 2.12 Modbus Command Communication real-time Status page

Table 2.2 I/O information real-time display description

Item

Description

Modbus RTU Slave Module Station number

Number

MDC-211-WF Modbus Command Polling order and corresponding Internal Register order

Remote

Modbus RTU Slave Module Register address

MDC-211-WF

MDC-211-WF Internal Register address

Status

Modbus Command Polling status

If want to inquire the Modbus command communication status between MDC-211-WF

and Modbus RTU devices, please refer to the “Status" item:

(1) If the "Status" item displays GOOD, means the command is connected and reading data

currently.

(2) If the "Status" item displays DISABLED, means the command was disabled by the user. (3) If the "Status" item displays TIMEOUT, means the command was timeout and the device

did not respond, please check the module wiring, and the following Modbus RTU device

settings those need to be consistent with the settings in MDC-211-WF.

- Baud Rate

- Data Format (Data Bit / Parity / Stop Bit)

- Station number (ID) of the Modbus RTU Slave device

(4) If the "Status" item displays ILLEGAL DATA FUNCTION, represents Modbus Exception

code 01, which means the command connection was established, but the Modbus RTU

device of the communication target does not support the function code, please recheck

the Modbus command parameters.

(5) If the "Status" item displays ILLEGAL DATA ADDRESS, represents Modbus Exception

Code 02, which means the command connection was established, but the Modbus RTU

device of the communication target does not support the Starting Register address, or

exceeds the legal Register range (Starting + Length) , please recheck the Modbus

command parameters.

(6) If the "Status" item displays ILLEGAL DATA VALUE, represents Modbus Exception Code

03, means the command connection was established, but the Quantity of the command

access Register is not valid, please recheck the Modbus command parameters.

(7) If the "Status" item displays CRC ERROR, means the Modbus CRC code error and the

communication may be disturbed abnormally.

2.6.2. Inquire Corresponding Modbus Register Address

When the users define a Modbus command, MDC-211-WF automatically generates the

corresponding Internal Register address according to the order of the Modbus command.

The users only need to select "I/O Information" → "Internal Register", the browser will

automatically load the Modbus Register mapping table.

Table 2.3 Modbus Command Definition Example

ModbusDevice

# PortNo.

ModbusSlaveID

ModuleName

FunctionCode

RegStartAddr

RegCount * 0 1 M-7060 1 0

4 * 0 1 M-7060 2 0

6 * 0 2 M-7060 1 0

4 * 0 2 M-7060 2 0

6 #

For example of the table 2.3 above, the browser will load the Modbus Register mapping

table as Figure 2.13. The "Remote" item in the mapping table represents the Register address

of the Modbus RTU device; the "MDC-211-WF" item represents the corresponding Internal

via the Modbus protocol to control the entity Modbus RTU device.

Figure 2.13 Modbus Register Mapping Table in Web Interface

2.6.3. Testing I/O Channel Status of Modbus RTU Device

MDC-211-WF can real-time control the I/O channel of Modbus RTU devices via the

standard Modbus protocol, and also provide Web UI to real-time control the Modbus I/O

channel status. As Figure 2.14, users only need to click "I/O Information" and select the

Modbus RTU device want to control, the Web UI will display the pre-set Modbus command

and real-time display that Modbus device I/O channel status. The user can directly click I/O

channel to change the I/O channel status.

Figure 2.14 Modbus I/O information real-time displa page

3. Export and Import the System Settings

The user can set up MDC-211-WF via the Web UI, and also can export the configuration

to a *.csv file in the local computer for backup. More, the user can directly edit the setting

parameters in a *.csv file and import the *.csv file into the MDC-211-WF module to complete

the module setting.

This chapter introduces how to export and import the *.csv file, and describes the format

and setting code for the *.csv file, and some setting recommendations.

NOTE - *.csv file is a text file format that can be edited in spreadsheet software or plain text

files and has the advantage of being easy to use, read and maintain. It uses commas "," to

separate each column in a plain-text editor.

3.1. Export and Import the Configurations

This section describes the process to import and export the module configuration.

◆ Export

As Figure 3.1, select "Module Setting" → "Import/Export" → "Export" to export the

configurations of MDC-211-WF to a *.csv file.

Figure 3.1 Module Setting Export page

◆ Import

As Figure 3.2, click "Module Setting" → "Import/Export" → "Choose file" → "Import",

then the *.csv file can be uploaded into MDC-211-WF and set up immediately.

Figure 3.2 Module Setting Import page

3.2. Format Descriptions for the Configuration File (*.csv)

If the user wants to set up MDC-211-WF through the *.csv configuration file, the user can

export a *.csv file from the Web Interface as the configuration template. For the detail steps,

please refer to "3.1 Export and Import the Configurations ".

The MDC-211-WF configuration file includes all setting parameters. The label name and

order must be the same as the example in Figure 3.3. Below will introduce the settings of Wi-

Fi, Serial port and Ethernet, and the settings for Modbus Master and Modbus Slave.

NOTE - *.csv template can be got via the MDC-211-WF Web Interface (refer to Section 3.1).

Figure 3.3 MDC-211-WF configuration file (*.csv)

◆ Wi-Fi Communication Settings

The first part is for Wi-Fi and IP settings. Wi-Fi parameter descriptions may refer to "4.1.1

Wi-Fi Communication Interface", the label name and setting descriptions see Table 3.1 and

Table 3.2 below.

Wi-Fi

Mode

SSID

Encryption

Password

Band

RF Channel

* 0 MDC-211-WF

1qaz2wsx 1 48

Table 3.1 Wi-Fi settings and descriptions

Item

Label Name

Valid Code & Range

Mode

0: Limit-AP

1: Infrastructure

Default value: Limit-AP

SSID

The maximum length of SSID is 32 words

Default value: MDC-211-WF

Encryption

Limit-AP mode

1: OPEN

2: WPA2

3: WPA/WPA2

4: WPA

5: WEP

Infrastructure mode

1: OPEN

2: WPA/WPA2

5: WEP

Password

The maximum length of password is 63 words

Default value: 1qaz2wsx

RF Band

0: 2.4 GHz

1: 5 GHz

RF Channel

2.4 GHz: CH1~11

5 GHz: 36、40、44、48

Wi-Fi IP

DHCP

Mask

Gateway * 0

192.168.255.2

255.255.255.0

192.168.255.254

Table 3.2 Wi-Fi IP settings and descriptions

Item

Label Name

Valid Code & Range

DHCP

DHCP of Wi-Fi

0: disable

1: Enable

Default value: ”0”

IP of Wi-Fi

Default value: 192.168.255.2

Mask

Mask of Wi-Fi

Default value: 255.255.255.0

Gateway

Gateway of Wi-Fi

Default value: 192.168.255.254

◆ Ethernet Communication Settings

The second part is for Ethernet settings. Ethernet label name and setting descriptions

please see table 3.3 below.

Ethernet

# DHCP

Mask

Gateway * 0

192.168.255.1

255.255.0.0

192.168.0.1 #

Table 3.3 Ethernet settings and descriptions

Item

Label Name

Valid Code & Range

DHCP

0 (Disable) / 1 (Enable)

NOTE – The IP, Mask and Gateway should be set up according to the local network.

◆ Serial Port Communication Settings

The third part is for Serial port settings. Serial port parameter descriptions may refer to

"4.1.2 Serial Port Communication Interface", the label name and setting descriptions please

see table 3.4 below.

SerialPort

# PortName

BaudRate

DataBit

Parity

StopBit

CharTime

RS-232

115200

8 0 1

3.5

RS-485

115200

8 0 1

3.5 #

Table 3.4 Serial port settings and descriptions

Item

Label Name

Note

Port Name

PortName

The name of the Serial port; the location and content

are unmodifiable.

Baud Rate

BaudRate

115200 / 57600 / 38400 / 19200 / 9600 / 4800 / 2400

/ 1200 (Unit: bps)

Data Format

DataBit

7 / 8

Parity

0 (None) / 1 (Odd) / 2 (Even) / 3 (Mark) / 4 (Space)

StopBit

0 / 1 / 2

Inter-character

Timeout

CharTime

1.5 ~ 10 (Unit: Character Time)

◆ Modbus Mode Settings

The fourth part is for Modbus mode settings. Modbus parameter descriptions may refer

to Section 4.2, the label name and setting descriptions please see Table 3.5 below.

Modbus

PortName

PortNo.

ModbusMode

ModbusID

Retry

Timeout

Interval

Wi-Fi

0 1 1

200

RS-232

1 0 1

150

RS-485

2 1 1

150

Ethernet

N/A

Table 3.5 Modbus protocol settings and descriptions

Item

Label Name

Note

Port Name

PortName

The name of the Modbus communication port;

the location and content are unmodifiable.

Port Number

PortNo.

The number of the Modbus communication port;

the location and content are unmodifiable.

Modbus Mode

ModbusMode

0 (Disable) / 1 (Modbus Master) / 2 (Modbus

Slave)

Ethernet fixed to Modbus Slave, no need to set

Modbus Retry

Retry

0 ~ 9

Modbus Timeout

Timeout

0 ~ 65535

Polling Interval

Interval

0 ~ 65535

◆ Modbus Command Settings

The fifth part is for Modbus command settings. The label name and setting descriptions

please see Table 3.6 below.

ModbusCommand

# PortNo.

ModbusSlaveID

ModuleName

FunctionCode

RegStartAddr

RegCount

2 1 M-7017 4 0

2 2 M-7024 3 0

4 #

Table 3.6 Modbus RTU device settings and descriptions

Item

Label Name

Note

Port Number

PortNo.

1 (RS-232) / 2 (RS-485)

Modbus Slave ID

ModbusSlaveID

1 ~ 255

Module Name

ModuleName

Up to 12 ASCII characters

Function Code

FunctionCode

1 (Read/Write DO) / 2 (Read DI) / 3 (Read/Write AO)

/ 4 (Read AI)

Starting Address

RegStartAddr

0 ~ 65535

Quantity of

RegCount

1 ~ 64

[Note] The first column of the *.csv file has different meanings. It marks as:

"#": means the system-defined label; do not change the name and location (order).

"*": means the data that the user enabled.

"-": means the data that the user does not enable.

4. Parameter Descriptions

This chapter introduces a variety of setting parameters and examples for the users to

follow and set up the modules.

4.1. Communication Interface Parameter Descriptions

4.1.1. Wi-Fi Communication Interface

◆ Parameter descriptions

Table 4.1 shows the descriptions for the Wi-Fi parameters, setting range and notes.

Table 4.1 Wi-Fi related parameter descriptions

Item

Description

Mode

Note

Mode

Wi-Fi

Operation mode

Limit-AP

Wi-Fi AP mode: It can connect by AP client.

Infrastructure

Wi-Fi AP Client mode: It can connect to Wi-Fi AP.

SSID

Wi-Fi SSID

Limit-AP

SSID of Wi-Fi AP

Infrastructure

The AP client will connect to AP with same SSID.

Encryption

Limit-AP

Encryption of Wi-Fi AP

Infrastructure

The AP client will connect to AP with same

encryption.

Password

Limit-AP

Password of Wi-Fi AP

Infrastructure

The AP client will connect to AP with same

password.

Band

Wireless Band

Limit-AP

The band of Wi-Fi AP (2.4 or 5 GHz)

RFChannel

Wireless Channel

Limit-AP

The channel of Wi-Fi AP

The application of Wi-Fi AP and Infrastructure mode can refer to page 6.

4.1.2. Serial Port Communication Interface

◆ Parameter description

Table 4.3 below is the descriptions for the Serial port parameters and setting notes.

Table 4.3 Serial port related parameter descriptions

Project

Description

Note

Baud Rate

Communication

Baud rate

Support eight kinds of communication baud rate 115200 / 57600 / 38400 / 19200 / 9600 / 4800 / 2400 / 1200 bps

Please set the same as the Modbus RTU device

Data Format

Communication

Data format

Support five kinds of parity check codes - None / Odd / Even / Mark / Space Supports 7/8 data bit Support 0/1/2 stop bit

Set the same with the connected Modbus RTU device

Inter-character

Timeout

Timeout for

ending

command

reception

Valid range is 1.5 to 10 character-time

The default is the standard Modbus communication protocol 3.5 character time, the user can adjust according to the requirement

◆ Set Example

Table 4.4 shows a setting example to set the RS-485 of MDC-211-WF as a Modbus

Master, and the recommend parameter values for the Serial port.

Table 4.4 MDC-211-WF and M-7000/PLC setting example

Project

MDC-211-WF

M-7017

M-7060

PLC

Baud Rate

115200

Data Format

N,8,1

Inter-character Timeout

3.5

N/A

4.2. Modbus Protocol Parameter Descriptions

MDC-211-WF is a Modbus data concentrator with Wi-Fi / RS-232 / RS-485 / Ethernet

interfaces. The users need to set a communication interface to Modbus Master / Modbus

Slave (The interface not used can be set to “Disabled”). The following sections describe the

parameters for setting to Modbus Master and Modbus Slave.

4.2.1. Modbus Master Setting Parameters

◆ Parameter Description

Table 4.5 shows the descriptions for the Modbus Master setting parameters and the

setting notes.

Table 4.5 Modbus Master related parameter descriptions

Item

Description

Note

Modbus

Timeout

Polling

Timeout

It is the maximum time for waiting the response from Modbus RTU device. If there is no response after the time expires, it is considered as timeout and execute the next command.

Users can change the value as needed.

Modbus

Retry

Number of

polling

Retries

When the number of command timeouts exceeds the number of retries, the MDC-211-WF regards the Modbus RTU device as offline and performs the following two operations:

a. Suspend this polling command for 10 seconds until the device

is back online again

b. The status of the Modbus command can be read via the

Internal Register of MDC-211-WF, where the Register value of 0xFFFF is represented the timeout. (For more information can see Chapter 5. FAQ-Q5)

The default of Modbus Retry is 3 times, users can change the value as needed

Polling

Interval

Polling

Interval

The interval time for command polling to avoid

communication signal collisions.

Users can change the value as needed

◆ Example

Table 4.6 below is a setting example to set MDC-211-WF to Modbus Master, and the

recommend parameters.

Table 4.6 MDC-211-WF and M-7000 or PLC communication setting example

Project

Wi-Fi

RS-485

RS-232

Modbus Timeout

200

150

Modbus Retry

3 3 3

Polling Interval

4.2.2. Modbus Slave Setting Parameters

◆ Parameter description

Table 4.7 below is the descriptions for Modbus Slave setting parameters and the setting

notes.

Table 4.7 Modbus Master related parameter descriptions

Item

Description

Note

Modbus ID

Modbus

Station

Number

The station number for setting MDC-211-WF to Modbus

Slave

Users can change the value as needed (1~255)

5. FAQ

Q1 - What are the maximum numbers of polling definition and Internal

The maximum number of polling definition in a MDC-211-WF is 240 commands, each

definition can access up to 64 Internal Registers. Each of the four tables (DI/DO/AI/DO) can

store up to 9600 Internal Registers for polled data.

Q2 - What is the maximum number of data can be accessed in one

command from a Modbus Master device?

By the Modbus TCP protocol, the maximum amount of Internal Registers that one Modbus

command can access is 255 of function code 01 and 02, and 126 of function code 03 and 04.

Q3 - How are the Internal Registers corresponding to the polled data in a

MDC-211-WF?

Please refer to the "2.6.2 Inquire Corresponding Modbus Register Address" for the detail

information.

Q4 - How to read each MDC-211-WF command status via the Modbus

communication?

MDC-211-WF can view the real-time status of each Modbus command directly in a

Web UI, and also store the status in the Internal Register starting with the address 39600

(0x2580), that meaning the Modbus Master can use function code 04 to read the command

status. One command can read up to 126 Internal Register data.

Figure 5.2 Modbus command real-time status example

For example of Figure 5.2 above, Modbus Master uses the function code 04 to read the

connection status from 39600 as Table 5.1.

Table 5.1 The corresponding Internal Register address of the command status

Command No.

Addresses

State Code

Web Page Display

#001

39600

00 00

GOOD

#002

39601

83 02

ILLEGAL DATA ADDRESS

#003

39602

83 03

ILLEGAL DATA VALUE

#004

39603

FF 00

DISABLED

#005

39604

FF FF

TIMEOUT

The descriptions for the Read status:

- 0: Indicates that the connection is in normal status.

- 0xFFFF: Connection Timeout

- 0xFF00: Command not enabled (Disabled)

- 0x8XYY: Communication error. X-function code, YY– Error code, as Table 5.3 below

Table 5.3 Error code of the command status

Error Code

Name

Description

Illegal Function

This function code is not supported

Illegal Data Address

Illegal data address

Illegal Data Value

Illegal data value

Illegal Response

Length

The requested data length exceeds the allowable

length of the Modbus protocol.

CRC Error

CRC error for the command response

Q5 - How to update the firmware?

MDC-211-WF can update the firmware via a software tool (Windows) by the following steps:

(1) Download the latest version of the firmware program and update Tool (FW_Update_Tool)

on the MDC-211-WF product page and store it in a computer that you want to connect

to MDC-211-WF.

- Firmware: http://ftp.icpdas.com/pub/cd/usbcd/napdos/wifi/mdc-211-wf/firmware/

- Update Tool: http://ftp.icpdas.com/pub/cd/usbcd/napdos/wifi/mdc-211-wf/tools/

(2) Short the FW with P.GND of MDC-211-WF and turn on the power. When the six LEDs of

MDC-211-WF turn blinking alternately, the MDC-211-WF is successfully entered the

firmware updating mode.

(3) Execute “FW_Update_Tool.exe” with the administrator privileges ( ) and follow the steps

as Figure 5.3:

In "Download Interface", select a network port for connecting to MDC-211-WF.

In "Firmware Path", select the latest firmware update file (MDC211WF_xxxx.fw).

In "Firmware Update", click “Update” to start the firmware updating.

(4) When the update is completed, “Update OK” will be displayed in the “FW_Update_Tool”

window to indicate that the firmware updating is successful. Next, remove the short

connection between FW and P.GND, and reboot the power supply, then check the current

firmware version on the Web interface.

F.G.

P.GND

PWR

INIT

D-

GND

RxD

TxD

Link/Act

10/100M

D+

Figure 5.3 FW_Update_Tool firmware update steps

6. Appendix

6.1. LED Indicator State Descriptions

Figure6.1 LED Position Diagram

Table 6.1 LED Description

LED Indicator

State

Description

Signal LED

Wi-Fi Limit-AP Mode

AP at 2.4 GHz

AP at 5 GHz Wi-Fi Infrastructure Mode

Wi-Fi Signal strength High

Wi-Fi Signal strength Medium

Wi-Fi Signal strength Low

PWR

Steady Lit

Firmware loaded correctly

Steady Unlit

Firmware loaded failed

Err

Steady Unlit

No errors

Blinking (500 ms)

There are Modbus command polling errors

DATA

Steady Unlit

No errors

Blinking (500 ms)

Receive data from Wi-Fi

Signal-Green

Signal-Yellow

Signal-Red

PWR

Err

DATA

【Other】If the above six LEDs are blinking alternately, the module is into the firmware update

mode (bootloader), which can update the firmware with the "FW_Update_Tool". For more

information please refer to the FAQ - Q6.

ICP DAS MDC-211-WF User manual

Specifications and Main Features

Frequently Asked Questions

User Manual