ICPDAS ET-7000, ET-7200, PET-7000, PET-7200 User Manual

Industrial Computer Products

Data Acquisition Systems

ET-7X00/PET-7X00 Series

User Manual

Vers i o n 1 . 1.2, February 2014

ET-7000/ET-7200 Series

(Ethernet I/O)

PET-7000/PET-7200 Series

(PoE I/O)

ET-7X00/PET-7X00 User Manual, version 1.1.2 I

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, nor for any infringements of patents or other rights of third parties resulting from its use.

Copyright

Trademarks

Names are used for identification purpose only and may be registered trademarks of their respective companies.

Contact US

If you have any problems, please feel free to contact us.

You can count on us for a quick response.

Email: service@icpdas.com

ET-7X00/PET-7X00 User Manual, version 1.1.2 II

Table of Contents

1. Introduction ............................................................................................ 1

1.1. Features ............................................................................................................. 3

1.2. Overview ............................................................................................................ 6

1.3. Dimensions ...................................................................................................... 10

1.4. Companion CD ................................................................................................. 12

2. Getting Started ...................................................................................... 13

2.1. Mounting the ET-7X00/PET-7X00 .................................................................... 14

2.2. Configuring the Boot Mode ............................................................................. 16

2.3. ET-7X00/PET-7X00 Hardware Connections ..................................................... 17

2.4. Installing the MiniOS7 Utility ........................................................................... 19

2.5. Using the MiniOS7 Utility to Assign an IP Address .......................................... 20

2.6. Enabling the Adobe Flash Player in Your Browser ........................................... 24

2.7. Configuring the I/O Functions ......................................................................... 25

3. Web Applications .................................................................................. 28

3.1. Overview .......................................................................................................... 31

3.2. Configuration ................................................................................................... 33

3.2.1. Network Settings ....................................................................................... 34

3.2.2. Basic Settings ............................................................................................ 37

3.2.3. Module I/O Settings .................................................................................. 48

3.3. Authentication ................................................................................................. 57

3.3.1. Account Management ............................................................................... 58

3.3.2. Accessible IP Settings ................................................................................ 61

3.4. Web HMI .......................................................................................................... 65

3.4.1. Web HMI ................................................................................................... 66

3.4.2. Web Edit .................................................................................................... 67

3.5. I/O Pair Connection ......................................................................................... 76

ET-7X00/PET-7X00 User Manual, version 1.1.2 III

3.5.1. Example 1: Pair Connection - AO to AI ...................................................... 78

3.5.2. Example 2: Pair Connection - DO to DI ..................................................... 83

3.6. More Information ............................................................................................ 86

4. Modbus and Modbus TCP/IP ................................................................. 88

4.1. Modbus TCP/IP Interface ................................................................................. 89

4.2. Protocol Description ........................................................................................ 90

4.3. Data Encoding .................................................................................................. 93

4.3.1. Binary ........................................................................................................ 93

4.3.2. 16-bits Word.............................................................................................. 93

4.4. Data Model ...................................................................................................... 94

4.5. Modbus Functions and Registers .................................................................... 95

4.5.1. 01 (0x01) Read Coils .................................................................................. 95

4.5.2. 02 (0x02) Read Discrete Inputs ................................................................. 96

4.5.3. 03 (0x03) Read Holding Registers ............................................................. 97

4.5.4. 04 (0x04) Read Inputs Registers ................................................................ 98

4.5.5. 05 (0x05) Write Single Coil ........................................................................ 99

4.5.6. 06 (0x06) Write Single Register ............................................................... 100

4.5.7. 15 (0x0F) Write Multiple Coils ................................................................ 101

4.5.8. 16 (0x10) Write Multiple Registers ......................................................... 102

4.6. Modbus Master Simulators ........................................................................... 103

4.6.1. Modbus/TCP Client ................................................................................. 103

4.6.2. Modbus Master Tool ............................................................................... 105

4.7. Modbus Demo Programs ............................................................................... 108

5. Calibration .......................................................................................... 109

5.1. Voltage and Current Calibration .................................................................... 109

5.2. Thermocouple Calibration ............................................................................. 114

5.3. RTD Calibration .............................................................................................. 115

5.4. Recover Calibration to Factory Setting .......................................................... 117

6. MiniOS7 Utility Tools ........................................................................... 118

ET-7X00/PET-7X00 User Manual, version 1.1.2 IV

6.1. Establishing a Connection.............................................................................. 118

6.2. Exchanging the Protocol (TCP/IP to UDP) ...................................................... 121

6.3. Updating the ET-7X00/PET-7X00 OS .............................................................. 123

6.4. Updating the ET-7X00/PET-7X00 Firmware ................................................... 127

7. External Tools and Tasks ...................................................................... 132

7.1. LabVIEW ......................................................................................................... 132

7.2. OPC Server ..................................................................................................... 133

7.3. SCADA ............................................................................................................ 134

7.3.1. InduSoft ................................................................................................... 135

7.3.2. Citect ....................................................................................................... 136

7.3.3. iFix ........................................................................................................... 137

Appendix A. Node Information Area......................................................... 138

Appendix B. Thermocouple ...................................................................... 139

Appendix C. Modbus Application Notes ................................................... 140

C.1. Dual Watchdog ............................................................................................. 140

C.2. Power-on Value ............................................................................................ 141

C.3. Safe Value ..................................................................................................... 143

C.4. AI High/Low Alarm ....................................................................................... 145

C.5. AI High/Low Latch ........................................................................................ 150

Appendix D. Analog Input Type and Data Format Table ............................ 151

Appendix E. Analog Output Type and Data Format Table ......................... 156

Appendix F. Network Address Translation ................................................ 157

Appendix G. Troubleshooting ................................................................... 159

Appendix H. Revision History ................................................................... 160

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 1

1. Introduction

The ET-7X00/PET-7X00, a web-based Ethernet I/O module, features a Built-in web server which allows configuration, I/O monitoring and I/O control by simply using a regular web browser. Remote control is as easy as surfing the Internet.

Besides Web HMI function, no more programming or HTML skills are required; creating dynamic and attractive web pages for I/O monitoring and I/O control would be fun to engineers ever after. The ET-7X00/PET-7X00 offers easy and safe access for users from anytime and anywhere! In addition, the ET-7X00/PET-7X00 also supports Modbus TCP protocol that makes perfect integration to SCADA software.

Furthermore, PET-7X00 features “PoE” that not only Ethernet but also power is carried through an Ethernet cable. This feature makes installation of PET-7X00 a piece of cake. Imagine that no more unnecessary wires, only an Ethernet cable takes care of everything in the field.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 2

Comparison between ET-7X00 and PET-7X00

The PET-7X00 has some unique features that different from the ET-7X00

 PET-7X00 = Power over Ethernet + ET-7X00

The PET-7X00 includes integrated Power over Ethernet (PoE) technology that allows both power and data to be carried over a single Ethernet cable, meaning that a device can operate solely from the power it receives through the data cable. This innovation allows greater flexibility in office design, higher efficiency in systems design, and faster turnaround time in installation and implementation. The PET-7X00 features true IEEE

802.3af-compliant (classification, Class 1) PoE using both Ethernet pairs (Category 5 Ethernet cable). The PET-7X00 can also receive power from auxiliary power sources such as DC adapters and external battery packs, in addition to the PoE-enabled network. This is a desirable feature when the total system power requirements exceed the PoE's load capacity. Furthermore, with the benefit of the auxiliary power option, the PET-7X00 can be easily integrated into a standard Ethernet (non-PoE) system.

 Industrial PoE Solution

The PoE switch is the ideal power source when using the PET-7X00 module. The PoE switch automatically detects whether the connected devices are PoE-enabled or not, which ensures that the PoE switch will function in conjunction with both PoE and non-PoE devices simultaneously.

 More information about the PET-7X00 series

There are two ways for PET-7X00 series devices to obtain power. The first is through the Ethernet via a PoE switch; the second one is the usual method through wiring from an external power source. External power source should range from +12 VDC to 48 VDC. The reason that the second method has been retained is because it might still prove useful for different applications in a variety of scenarios. The PET-7X00 is also equipped with an LED to indicate whether or not the power is being supplied via a PoE Switch.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 3

1.1. Features

The ET-7X00/PET-7X00 module offers the most comprehensive configuration focused on meeting specific application requirements. The following details the features designed to simplify installation, configuration and application.

Power over Ethernet (PoE)

The PET-7X00/PET-7X00 series module can be powered by an IEEE802.3af compliant

PoE switch. Both Ethernet and power can be carried by an Ethernet cable eliminating

the need for additional wiring and power supply.

Daisy-Chain Ethernet Cabling

The ET-7200/PET-7200 Series has a built-in two-port Ethernet switch to implement

daisy-chain topology. The cabling is much easier and total costs of cable and switch

are significantly reduced.

LAN Bypass

LAN Bypass feature guarantees the Ethernet communication. It will automatically

active to continue the network traffic when the ET-7200/PET-7200 looses its power.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 4

Communication Security

Account and password are needed when logging into the web server. An IP address

filter is also included, which can be used to allow or deny connections with specific IP

addresses.

Support for both Modbus TCP and Modbus UDP Protocols

The Modbus TCP, Modbus UDP slave function on the Ethernet port can be used to

provide data to remote SCADA software.

Built-in I/O

Various I/O components are mixed with multiple channels in a single I/O module,

which provides the most cost effective I/O usage and enhances performance of the

I/O operations.

Dual Watchdog

The Dual Watchdog is consists of a Module Watchdog and a Communication

Watchdog. The action of AO, DO are also associated to the Dual Watchdog.

Module Watchdog is a built-in hardware circuit to monitor the operation of the

module and will reset the CPU if a failure occurs in the hardware or the software.

Then the Power-on Value of AO, DO will be loaded.

Communication Watchdog is a software function to monitor the communication

between the host and the I/O module. The timeout of the communication Watchdog

is programmable, when the I/O doesn't receive commands from the host for a while,

the watchdog forces the AO, DO to pre-programmed Safe Value to prevent

unpredicatable damage of the connected devices.

Highly Reliable Under Harsh Environment

Wide Operating Temperature Range: -25 ~ +75°C

Storage Temperature: -30 ~ +80°C

Humidity 10 ~ 90% RH (Non-condensing)

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 5

I/O Pair Connection

This function is used to create a AI/DI to

AO/DO pair through the Ethernet. Once

the configuration is completed, the I/O

module can poll the status of remote

AI/DI devices and then use the Modbus

TCP protocol to continuously write to a

local AO/DO channels in the background.

Power-on Value and Safe Value

Besides setting by the set AO, DO commands, the AO, DO can be set under two other

conditions.

Power-on Value: The Power-on Value is loaded into the AO, DO under 3 conditions:

Power-on, reset by Module Watchdog, reset by reset command.

Safe Value: When the Communication Watchdog is enabled and a Communication

Watchdog timeout occurs, the “safe value” is loaded into the AO, DO.

LED indicators for DIO status

The LED indicators for DIO status are for ET-7200/PET-7200 series.

Reset button

The reset button is for ET-7200/PET-7200

series. It is used to clears all data and

restore all settings to be factory default

values. It is very useful especially when you

forget the ID, password to log into the web server,

or IP address to access the Ethernet I/O module.

Two pair of power input pins

For ET-7000/PET-7000 series, there are only two pins for power input. To ease the

wiring, the pins are increased to four pins as two pairs for ET-7200/PET-7200 series.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 6

1.2. Overview

The front panel of the ET-7X00/PET-7X00 module contains the Ethernet Port, connectors and LEDs.

Please refer to the data sheets for specific ET-7X00/PET-7X00 models for details of pin assignments, which can be found at:

http://ftp.icpdas.com/pub/cd/6000cd/napdos/et7000_et7200/document/data_sheet/

Model

Label

Status

Description

ET-7000/

PET-7000

L1

Flashing

The unit is turned on and is ready for use.

L2

On

A link has been established on the E1 port.

Off

No link is established on the E1 port.

Flashing

Data transmission or receiving activity is occurring on the E1 port.

L3 On

The E1 port is operating at 10 Mb/s.

Off

The E1 port is operating at 100 Mb/s.

ET-7200/

PET-7200

RUN

Flashing

The unit is turned on and is ready for use.

E1

On

A link has been established on the E1 port.

Off

No link is established on the E1 port.

Flashing

Data transmission or receiving activity is occurring on the E1 port.

E2

On

A link has been established on the E2 port.

Off

No link is established on the E2 port.

Flashing

Data transmission or receiving activity is occurring on the E2 port.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 7

The bottom panel of the ET-7X00/PET-7X00 module contains the Ethernet port and the reset button.

Reset button (for ET-7200/PET-7200 series modules only)

The reset button is used to restore the following settings to its factory defaults by pressing and holding the reset button for 5 seconds.

▪ Network Settings ▪ Authentication ▪ Web HMI ▪ Pair Connection

For more information about these settings, please refer to section 3.2.2. (C) "Resetting All Settings to Default”.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 8

The back panel of the ET-7X00/PET-7X00 module contains the frame ground and the operating mode selector switch.

Operating Mode Selector Switch

Init Mode:

This mode is used for MiniOS7 configuration.

Normal Mode:

This mode is used to execute and run firmware.

On the ET-7X00/PET-7X00 module, the operating mode selector switch should

usually be in the Normal position. The switch should only be moved from the Normal

position to the Init position when updating the ET-7X00/PET-7X00 firmware or the OS.

Once the update has been completed, ensure that the switch is returned to the

Normal position.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 9

Frame Ground

Electronic circuits are constantly vulnerable to Electrostatic Discharge (ESD), which

becomes worse in a continental climate area. The ET-7X00/PET-7X00 series features a

new design for the frame ground that provides a path for bypassing ESD, allowing

enhanced static (ESD) protection capabilities and ensuring that the module is more

reliable.

Choosing either of the following options will provide a better level of protection for

the module:

The ET-7X00/PET-7X00 has a metallic board attached to the back of the plastic case,

shown as “1” in the figure below.

When mounted to a DIN-Rail, connect the DIN-Rail to the earth ground because the

DIN-Rail is in contact with the upper frame ground, as shown as “2” in the figure

below.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 10

1.3. Dimensions

The following diagrams provide the dimensions of the ET-7X00/PET-7X00 module and can be used as a reference when defining the specifications for any custom enclosures. All dimensions are in millimeters.

For the ET-7000, PET-7000: 72 x 123 x 35

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 11

For the ET-7200, PET-7200: 76 x 120 x 42

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 12

1.4. Companion CD

This package includes a companion CD that provides the drivers, a software utility, and all of the required documentation, etc. An outline of the directory structure for the files contained on the CD is shown below.

CD:\Napdos

ET7000_ET7200

Software

Demo

Document

Firmware

OS_image

ez_data_logger

minios7_utility

modbus_labview

modbus_master_tool

modbus_tcp_client

napopcsvr

PC_client

Modbus_TCP

Application

Data_sheet

ET7000

PET7000

ET7200_PET7200

ET7000_PET7000

ET7200_PET7200

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 13

2. Getting Started

If you are a new user, begin with this chapter as it includes a guided tour that provides a basic overview of how to install, configure and use the ET-7X00/PET-7X00 module.

Before starting any task, please check the package contents. If any of the following items are either missing or damaged, contact your dealer or distributor.

ET-7X00/PET-7X00 Software Utility CD Quick Start Guide

Before operating the ET-7X00/PET-7X00 module, a basic understanding of the hardware specifications is required, such as the dimensions of the module, the usable input voltage range of the power supply, and the type of communication interfaces.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 14

2.1. Mounting the ET-7X00/PET-7X00

The ET-7X00/PET-7X00 module can be mounted by attaching the bottom of the chassis to a DIN-Rail, to the wall, or by piggybacking it to another module.

DIN-Rail Mounting

The ET-7X00/PET-7X00 module

includes simple rail clips that

can be used to reliably mount it

on a standard 35 mm DIN-Rail.

Mounting the Chassis on a DIN-Rail

1. Hook the upper tab over the

upper flange of the DIN-Rail.

2. Tilt the module toward the DIN-Rail

until it snaps securely to rail.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 15

Piggyback Mounting

The ET-7X00/PET-7X00 module has a

hole on either side of the casing that

can be used for piggyback mounting.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 16

2.2. Configuring the Boot Mode

The ET-7X00/PET-7X00 module has two operating modes, which can be determined by the switch mechanism on the chassis.

Init Mode

Init mode is a way to use MiniOS7

configuration mode.

Tips & Warnings

Init mode is a method to use MiniOS7 configuration mode and update the software. After the update is completed, set the switch to the Normal position.

Normal Mode

Normal mode is the default mode of

operation and the one you will use

most of the time. Use this mode for

more tasks and configurations.

Programs also are executed in this

mode.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 17

2.3. ET-7X00/PET-7X00 Hardware Connections

ET-7X00/PET-7X00 series modules provide a variety of communication interfaces to suit a range of applications. Below is a description of the configuration for simple applications using the ET-7X00/PET-7X00 when implementing both PoE and Non-PoE solutions.

Non-PoE

i. Connect the PC to the Ethernet Port via the Hub or Switch.

ii. Connect the positive of the power supply to the terminal marked “(R)+Vs” on the

ET-7X00.

Connect the negative of the power supply to the terminal marked “(B)GND” on

the ET-7X00.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 18

PoE

i. Connect the PC to the Ethernet Port via the PoE Switch.

ii. Connect the power supply to the PoE Switch, which in turn supplies power to the

PET-7X00.

Tips & Warnings

Only the E1 port of the PET-7X00 supports the PoE feature.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 19

2.4. Installing the MiniOS7 Utility

The MiniOS7 Utility is a useful tool that provides a quick and easy way to update the OS image or the firmware, configure the Ethernet settings, and upload files to the ET-7X00/PET-7X00 from a PC.

Step 1： Install the MiniOS7 Utility tool

The latest version of the MiniOS7 Utility can be obtained from the companion CD:

CD:\Napdos\Software\minios7_utility\

or from the ICP DAS FTP site at:

http://ftp.icpdas.com/pub/cd/6000cd/napdos/software/minios7_utility/

Step 2：Follow the instructions in the Setup Wizard to complete the installation

After the installation has been completed, a new short cut for the MiniOS7 Utility will be displayed on your desktop.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 20

2.5. Using the MiniOS7 Utility to Assign an IP Address

The ET-7X00/PET-7X00 is web-based device, and is configured using a default IP address, meaning that you must first assign a new IP address to the ET-7X00/PET-7X00 before operation.

The factory default IP settings are as follows:

Item

Default

IP Address

192.168.255.1

Subnet Mask

255.255.0.0

Gateway

192.168.0.1

Step 1：Run the MiniOS7 Utility

Double-click the “MiniOS7 Utility” shortcut on your desktop.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 21

Step 2：Press the “F12” key or choose the “Search” option from the “Connection” menu

After pressing the “F12” key or choosing the “Search” option from “Connection” menu, the utility will perform a search of all MiniOS7 modules

on your network.

Step 3：Click the “192.168.255.1” item in the IP/Port field list and then click the “IP

Settings” icon in the toolbar

After the search has been completed, click the default value “192.168.255.1” in the IP/Port field list, and then click the “IP Settings” icon in the toolbar to display the IP Settings dialog box.

Check the status bar to monitor

for the progress of the search

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 22

Step 4：Assign a new IP address and then click the “Set” button

In the IP Settings dialog box, you can manually assign an IP Address, Mark Address, Gateway and Alias, or you can use the DHCP function to dynamically assign IP addresses.

Once the appropriate values have been entered, click the “Set” button to save the settings.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 23

Step 5：Reboot the module and then press the “F12” key or click the “Search” option

from the “Connection” menu to check the IP settings

After completing and saving the settings, you should reboot the module and then use the MiniOS7 Utility to perform another search for the module to make sure that the IP settings are correct. See Step 2 for details.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 24

2.6. Enabling the Adobe Flash Player in Your Browser

The Web HMI page requires the Adobe Flash Player to be installed. The latest version of the Adobe Flash Player can be downloaded by accessing the Adobe Systems Incorporated website. The following instructions will help you to install the Adobe Flash Player in your web browser.

Step 1：Go to the Adobe Flash Player Download Center

The Adobe Flash Player Download Center:

http://get.adobe.com/flashplayer/

The Adobe Flash Player is subject to change without notice; refer to

http://www.adobe.com/support/flashplayer/downloads.html for the

latest version of this software.

Step 2：Follow the instructions to download the installation file

Click the “Agree and install now” button and follow the instructions to download the installation file. Note that unless you uncheck the option, the Google Toolbar will be included in the installation by default, so if you do not require this feature, be sure to uncheck this option.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 25

2.7. Configuring the I/O Functions

The ET-7X00/PET-7X00 series contains an advanced web configuration system that provides users with access to ET-7X00/PET-7X00 series applications through a standard web browser.

Step 1：Be sure that the switch is set to the “Normal” position and then reboot the

module

Step 2：Open a browser

Use a standard internet browser to view the ET-7X00/PET-7X00 web pages, such as Mozilla Firefox or Internet Explorer, etc.

Step 3：Enter the URL address for the ET-7X00/PET-7X00

If you haven’t changed the default IP address of the ET-7X00/PET-7X00 module, please refer to section 2.5. “Using the MiniOS7 Utility to Assign an IP Address” to configure it.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 26

Step 4：Enter your User name and Password

After entering the IP address, the login dialog box will appear, prompting you to enter your user name and password.

The factory default user name and password are as follows:

Step 5：Welcome to the ET-7X00/PET-7X00 web interface

After logging into the ET-7X00/PET-7X00 web interface, the welcome page will be displayed.

Item

Default

User name

Admin

Password

Admin

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 27

Step 6：Configure and browse the I/O functions

Click the “Web HMI” option in the “Web HMI”

section of the Main Menu for the ET-7X00/PET-7X00, and then click the I/O function tabs to configure and browse the I/O functions.

For more detailed information related to the I/O specification, pin assignment, and I/O functions, etc. for each ET-7X00/PET-7X00, please refer to “ET7000_ET7200 Register Table”, which can be obtained from:

CD:\NAPDOS\ET7000_ET7200\document\

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 28

3. Web Applications

The ET-7X00/PET-7X00 contains an advanced web configuration system that provides users with access to ET-7X00/PET-7X00 applications through a standard web browser.

Logging into the ET-7X00/PET-7X00 web pages

You can log into the ET-7X00/PET-7X00 web pages from any computer that has Internet access.

Step 1：Open a browser

Use a standard internet browser to view the ET-7X00/PET-7X00 web pages, such as Mozilla Firefox or Internet Explorer, etc.

Step 2：Enter the URL address for the ET-7X00/PET-7X00

If you haven’t changed the default IP address of the ET-7X00/PET-7X00 module, please refer to section 2.5. “Using the MiniOS7 Utility to Assign an IP Address” to configure it.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 29

Step 3：Enter your User name and Password

After entering the IP address, the login dialog box will appear, prompting you to enter your user name and password.

The factory default user name and password are as follows:

Item

Default

User name

Admin

Password

Admin

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 30

Step 4：Welcome to the ET-7X00/PET-7X00 web interface

After logging into the ET-7X00/PET-7X00 web interface, the welcome page will be displayed.

This web interface provides a number of functions, which can be easily accessed via the menu on the left hand side of the page.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 31

3.1. Overview

The “Overview” option in the Main menu provides a brief introduction to and explanation of the web interface.

The “Overview” option links to the welcome page and contains two main parts.

The top section of the page provides some basic information about both the ET-7X00/PET-7X00 hardware and software.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 32

The lower section of the page provides a brief introduction to the web interface.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 33

3.2. Configuration

The “Configuration” section of the Main menu contains the following options:

Network Settings: Provides access to the Ethernet Settings page which allows you to access the IP settings and check the software version.

Basic Settings: Provides access to the Basic Settings page which allows you to configure the basic information for the web interface.

Module I/O Settings: Provides access to the Common Functions page which allows you to configure the settings for the module I/O.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 34

3.2.1. Network Settings

The Network Settings page allows you to perform the following functions:

(A) Configure the network settings (B) Check the software information

(A) Configuring the Network Settings

In general, network settings include the following parameters:

● An IP address: Each ET-7X00/PET-7X00 on the network must have a unique IP address.

● A default gateway: A gateway (or router) is a system that is used to connect a network

with one or more other networks.

● A subnet mask: The subnet mask indicates which portion of the IP address that is used to

identify the local network or subnet.

There are two methods of configuring the network settings:

● Dynamic configuration: The Dynamic Host Configuration Protocol (DHCP) is a network

application protocol that automatically assigns an IP address to a device.

● Manual configuration: In the absence of DHCP, ET-7X00/PET-7X00 modules can be

manually configured with an IP address, mask, and a gateway.

A

B

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 35

Dynamic Configuration

If a DHCP server is present on the network, the ET-7X00/PET-7X00 will automatically obtain

the network settings from the DHCP server when the DHCP function is enabled.

Step 1：Enable the DHCP by checking the “Enabled” radio button.

Step 2：Click the “Modify Settings” button to finish configuring the network settings.

Manual Configuration

When using manual configuration, all network settings need to be assigned manually. Each ET-7X00/PET-7X00 module should have a unique IP address assigned to the interface in order to identify itself on the network.

Step 1：Disable the DHCP by checking the “Disabled” radio button.

Step 2：Enter the relevant network settings information into the respective fields .

Step 3：Click the “Modify Settings” button to finish configuring the network settings.

1

2

1

3

2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 36

(B) Checking the Software Information

The software information section includes the following items:

● Web Server Lib. Version: This item provides details of the version number for the web

server library, which is a collection of web development solutions that are providing by ICPDAS for use with custom applications.

● MiniOS7 Version: This item provides defaults of the version number for the MiniOS7 OS

image, which is an embedded operating system specifically designed for use with ICP DAS controllers.

This page can be used to check the version information for the ET-7X00/PET-7X00 software after updating the ET-7X00/PET-7X00 firmware (see section 6.4 . “Uploading the ET-7X00/PET-7X00 firmware” for more details).

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 37

3.2.2. Basic Settings

The “Basic Settings” page allows you to perform the following functions:

(A) Configure the module information (B) Configure the web interface information (C) Reset all parameters to the default settings

C A B

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 38

(A) Configuring the Module Information

The “Module Information” section includes the following items:

● Module Name: The initial value for this field will depend on the model of the module

and can not be modified.

● Module Information: The module information field indicates the name of the alias that

is used to identify the module.

To configure the module information, follow the procedure below:

Step 1：Enter the Module information in the relevant field.

Step 2：Click the “Submit” button to finish configuring the module information.

1

2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 39

(B) Configuring the Web Interface Information

The module information section includes the following items:

● Page Header Information (First line) and Page Header Information (Second line):

The title of the website that is displayed the top left-hand corner of the interface, for example the company name and web address as per the example below.

● More Information URL:

This item allows you to specify the URL that will be displayed when the “More

information” option in the Main Menu is clicked in order to provide additional support

for the ET-7X00/PET-7X00. After completing the settings, click the “More Information” option to check that the link to the web site is correct (As per the figure below).

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 40

● Web Server Port: This option specifies which port is to be used for the web server. By

default, the HTTP port is 80.

● Modbus TCP Port: This option specifies which port is to be used for communication on

the Modbus TCP. By default, the Modbus protocol uses port 502.

● Modbus TCP Port (WAN): This option specifies which port is to be used for Modbus

communication between the remote host and local EX-7X00/PET-7X00. This settings can be ignored if ET-7X00/PET-7X00 is not located behind a router.

To configure the web interface information, follow procedure below:

Step 1：Enter the desired information into the respective fields.

Step 2：Click the “Submit” button to finish configuring the module information.

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2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 41

(C) Resetting All Settings to Default

The reset function is divided into categories based on the menu options for the web interface, and can be used to restore the individual settings to their factory default state.

Tips & Warnings

For ET-7200/PET-7200 modules, in addition to using the reset function in the web-based Basic Settings page, you can also use the reset button to restore the ET-7200/PET-7200 to factory defaults. For more information about the reset button, please refer to section 1.2. “Overview”.

To reset the settings to their factory default, follow the procedure below:

Step 1：Check the relevant check boxes for the items you wish to reset.

Step 2：Click the “Submit” button to reset the settings to their factory default state.

1

2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 42

(a) Factory Default Settings for the “Configuration” Menu Options

The tables below outline the factory default settings for the items listed in the

“Configuration” menu.

Network Settings

Ethernet Settings

Item

Factory Default Settings

IP Address

192.168.255.1

Gateway

192.168.0.1

Subnet Mask

255.255.0.0

DHCP

Disabled

Basic Settings

Item

Factory Default Settings

Module Name

Depends on the name of the module

Module Information

Empty

Page Header Information (First line)

ICP DAS

Page Header Information (Second line)

http://www.icpdas.com

More Information URL

http://www.icpdas.com/root/product/soluti

ons/remote_io/ethernet_io/et-7000_introdu

ction.html

Web Server Port

80

Modbus TCP Port

502

Modbus TCP Port (WAN)

502

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 43

Module I/O Settings

The information displayed on the settings page varies depending on the model number.

Common Functions

Item

Factory Default Settings

Host WDT Timeout

0 (Disabled)

WDT Event Counter

0

Modbus NetID

1

Digital Output

Item

Factory Default Settings

Power-on Value

OFF

Safe Value

OFF

Digital Input

Item

Factory Default Settings

DI Latch Status

Disabled

DI Counter

Disabled

Analog Output

Item

Factory Default Settings

Output Range

This value varies depending on the model of the module

Output Slew Rate

0 (Immediate)

Power-on Value

0

Safe Value

0

Data Format

2’s Comp

Hexadecimal

2’s Comp Hexadecimal

Engineering Unit

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 44

Analog Input

Item

Factory Default Setting

Input Range

This value varies depending on the model of the module

Enable

ON

High Alarm

Alarm Limit Value

This value varies depending on the model of the module

Enable

OFF

Alarm Mode

Momentary

Low Alarm

Alarm Limit Value

This value varies depending on the model of the module

Enable

OFF

Alarm Mode

Momentary

Sampling Rate Normal mode

(10 Hz)

Normal mode Fast mode

(50 Hz)

Filter Setting 60 Hz Rejection

60 Hz Rejection 50 Hz Rejection

Data Format

2’s Comp

Hexadecimal

2’s Comp Hexadecimal

Engineering Unit

Note: The analog input and the analog output share the same data format settings.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 45

(b) Factory Default Settings for the “Authentication” Menu Options

The tables below outline the factory default settings for the items listed in the “Authentication” menu.

Account Management

Factory Default Settings

A default user account consists of an account name, “Admin”, and a password, “Admin”.

Accessible IP Settings

Factory Default Settings

Empty, there is no limit allowing any outgoing access.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 46

(c) Factory Default Settings for “Web HMI” Menu Option

The tables below outline the factory default settings for the items listed in the “Web HMI” menu.

Web HMI

Factory Default Settings

Depends on the Modbus setting function of the ET-7X00/PET-7X00.

Web Edit

Factory Default Settings

0 Pages

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 47

(d) Factory Default Settings for the “I/O Pair Connection” Menu Option

The table below outlines the factory default settings for the “Pair Connection” option.

Pair Connection

Factory Default Settings

Empty

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 48

3.2.3. Module I/O Settings

After completing the general configuration of the ET-7X00/PET-7X00 module described in the previous section, the settings for the input and output channels need to be configured, such as the channel range and the alarm, etc.

Tips & Warnings

The contents displayed on this page will be depending on the Modbus functions applicable to the specific the ET-7X00/PET-7X00 module. Please refer to the user manual for each module for details of how to configure the relevant I/O settings.

In this example, the ET-7026/PET-7026 will be used in order to explain the I/O settings. (The ET-7026/PET-7026 is a multi-function module that has 6 AI channels, 2 AO channels, 2 DI channels and 2 DO channels.)

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 49

(A) Common Functions

The Common Functions area provides options that allow the settings for the Modbus functions to be configured.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 50

(B) Digital Output Settings

The Digital Output settings area provides details of the configuration settings for all digital output channels.

 Power-on Value: This section is used to set the power-on value for a specific digital

output channel. The digital output channel will then generate the start-up value output.

 Safe Value: When communication between the Host PC and the ET-7X00/PET-7X00

module interrupted is broken, the digital output channels can generate a predefined safe value. This function can be enabled by configuring the Host WDT Timeout setting.

For a more detailed description of these Modbus functions, please refer to: “Appendix C. Modbus Application Notes”.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 51

(C) Digital Input Settings

All digital input channels in ET-7X00/PET-7X00 modules can be used as 32-bit counters and each counter consists of two address values, the Low word and the High word. Specific individual DI channels can be counters via the Digital Input settings web page.

 DI Latched: When DI Latch function is enabled, once the digital input channel detects

any change in input status, the input status will be latched and will remain in this condition the latch is manually.

 DI Counter: When Counter mode is selected, one counter will record the number of

pulses from the digital signal for the selected channel, and will then record the count value in the register.

 Preset Value: This option allows the default values for the counters to be set.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 52

(D) Analog Output Settings

The Analog Output settings area contains two parts, the Basic Settings section and the Power-on/Safe Values section, which will be described in detail below.

Tips & Warnings

Before selecting the output range for each analog output channel, make sure that the jumpers are set properly.

For more detailed technical specifications related to the jumper settings for each ET-7X00/PET-7X00 module, please refer to “ET7000_ET7200 Register Table”, which can be obtained from:

CD:\NAPDOS\ET7000_ET7200\document\

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 53

 Range: In a manner, a different range can be set for each individual analog output

channel. Select the required voltage/current range from the respective drop-down

menus. For more detailed technical specifications related to the output range for each

analog output channel, please refer to: "Appendix E. Analog Output Type and Data Format Table".

 Slew Rate: This is the programmable output slew rate for the analog output channels,

i.e., the rate of change in the analog output voltage/current as it changes from one

output voltage/current to another. Select the most appropriate value from the

respective drop-down menus.

 Power-on Value: A power-on value can be set for a specific analog output channel, and

the analog output channel will then generate the start-up value output.

 Safe Value: When communication between the Host PC and the ET-7X00/PET-7X00

module is interrupted, the analog output channels can generate a predefined safe value. This function can be enabled or disabled by configuring the Host WDT Timeout setting.

For a more detailed description of these Modbus functions, please refer to: “Appendix C. Modbus Application Notes”.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 54

(E) Analog Input Settings

Analog Input Settings area contains two parts, the Basic Settings section and the Alarm Settings section, which will be described in detail below.

Tips & Warnings

Before selecting the input range for each analog input channel, make sure that the jumpers are set properly.

For more detailed technical specifications related to the jumper settings for each ET-7X00/PET-7X00 module, please refer to “ET7000_ET7200 Register Table”, which can be obtained from:

CD:\NAPDOS\ET7000_ET7200\document\

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 55

 Range: ET-7X00/PET-7X00 modules provide a programmable input voltage/current

range on all analog inputs channels, where a different range can be set for each

individual analog input channel. Select the required voltage/current from the

respective drop-down menus. For more detailed technical specifications related to the

input range for each analog input channel, please refer to: “Appendix D. Analog Input

Type and Data Format Table”.

 Enable: This section allows each analog input channel to be switched ON or OFF.

Normal/Fast Mode: ET-7X00/PET-7X00 modules support sample rates in either

“Normal” or “Fast” mode. Fast mode uses 60 Hz with a 12-bit resolution, while Normal

mode uses 10 Hz with a 16-bit resolution.

 50/60Hz Rejection for AI: In order to remove the noise from the power supply,

ET-7X00/PET-7X00 analog input modules feature two built-in rejection filters, that

operate at different frequencies, 50 or 60 Hz, that are designed to remove noise

generated by different power supplies.

 AI Data Format: ET-7X00/PET-7X00 modules allow data to be displayed in either

hexadecimal or engineering unit format. For more detailed technical specifications

related to the data format for each analog input channel, please refer to: “Appendix D.

Analog Input Type and Data Format Table”.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 56

(F) Analog Input Alarm Settings

The ET-7X00/PET-7X00 modules feature a built-in alarm function. The alarm includes two parts, the high alarm and the low alarm and each need to be configured for a specific channel.

 Value: You can define both the high alarm value and the low alarm value using the

Alarm Value text box. When the analog input value is higher than the high alarm value, or lower than the low alarm value, an alarm occurs. The alarm status will then be activated and switched to on.

 Enable: Each analog input alarm can be switched to on or off by clicking the

appropriate radio button.

 Mode: The ET-7X00/PET-7X00 allows the alarm to be selected as either Momentary or

Latch mode, which can be set using the Mode combo box for both the low alarm and the high alarm.

 Latch Mode: Once an alarm occurs, the alarm status will be activated and set to the

logic high level. This value will remain until the alarm is cleared manually.

 Momentary Mode: In this mode, the alarm status will dynamically change depending

on whether or not an alarm has occurred. If an alarm occurs, the alarm status will be set to on. If the alarm is deactivated, the alarm status will be set to off.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 57

3.3. Authentication

The “Authentication” section of the Main Menu contains the following options:

Account Management: Provides access to the privilege management page, which allows you to manage user accounts and their associated privileges.

Accessible IP Settings: Provides access to the IP Filter Settings page, which allows you to control access to the web site.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 58

3.3.1. Account Management

The Account Management page provides functions that allow the following tasks to be performed:

(A) Configuration of user accounts (B) Restoration of the factory default user account

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 59

(A) Configuring the User Accounts

The ET-7X00/PET-7X00 interface supports a maximum of five user accounts, including:

● A Built-in Administrator Account

The built-in Administrator account is basically a setup and disaster recovery account

that can be deleted. You can, however, change the password for the administrator

account.

● Four User-defined Accounts

Each user account consists of an account name, a password and an authority level.

The authority level includes the following roles, which determine the type of

operations the user is allowed to perform.

 Admin: This level enables access to all ET-7X00/PET-7X00 web site features,

functions, and commands.

 User: This level enables limited access to the ET-7X00/PET-7X00 web site features,

functions, and commands. In general, operators at this level cannot change configuration settings.

Once a user account has been created, it can be either enabled or disabled.

To add a new user account, perform the followings:

Step 1：Enter the user account information into the relevant text fields, and then select

the “Enable” checkbox.

Step 2：Click the “Submit” button to complete the user account configuration and save

the details.

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2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 60

(B) Restoring the Factory Default User Accounts

The ET-7X00/PET-7X00 has a built-in administrator account named Admin that is created by default. The default account cannot be deleted.

To restore the factory default user accounts, perform the followings:

Step 1：Select the “Load Setup Default” checkbox.

Step 2：Click the “Submit” button to restore the factory default user accounts.

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2

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 61

3.3.2. Accessible IP Settings

The IP Filter Settings page provides functions that allow the following tasks to be performed:

● Configuration of the connection filtering

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 62

(A) Configuring IP Filter

The ET-7X00/PET-7X00 includes an IP filter that enables you to restrict or grant user access based on a custom IP filter list that you create.

The filter can be enabled by selecting the “Enable the IP filter table” checkbox. After this option is selected, only requests from the IP addresses included in the list will be allowed access to the module.

Tips & Warnings

By default, there is no restriction on outgoing access.

Each filter list entry can be either activated or deactivated by selecting the respective “Activate the Rule” checkbox.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 63

(B) Configuring the IP Filters

Two methods are provided for configuring the IP filter, allowing filtering for either individual IP addresses, or across a range (group) of IP addresses.

Method 1: Allow access from a single IP address

Step 1：Select the “Enable the IP filter table” checkbox.

Step 2：Enter the same IP address in both the “From (IP Address)” and the “To (IP

Address)” text boxes. (The IP address may be the address of the PC currently

being used or others)

Step 3：Select the “Activate the Rule” checkbox.

Step 4：Click the “Submit” button to complete the configuration of the IP filter list and

save the settings.

4

1 2 3

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 64

Method 2: Allow access from a group of IP addresses

Step 1：Select the “Enable the IP filter table” checkbox

Step 2：Enter the first IP address in the range in the “From (IP Address)” and enter the

final IP address in the range in the “To (IP Address)” text boxes.

Step 3：Select the “Activate the Rule” checkbox.

Step 4：Click the “Submit” button to complete the configuration of the IP filter list and

save the settings.

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1 2 3

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 65

3.4. Web HMI

The “Web HMI” section of the Main Menu contains the following options:

Web HMI:

Provides access to the I/O monitor page, which allows you to remotely monitor and control the I/O status of the ET-7X00/PET-7X00 module.

Web Edit: Provides access to the Web interface Configuration page, which allows you to create dynamic web HMI pages.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 66

3.4.1. Web HMI

The ET-7X00/PET-7X00 module features a Web HMI web interface that can be used to display real-time I/O data values and alarms via the LAN or the Internet. Real-time I/O data values and alarms can be monitored at either the local or remote site using any web browser. Then, the Web HMI is completed immediately without requiring any programming skills.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 67

3.4.2. Web Edit

The ET-7X00/PET-7X00 module provides functions that enable users to create customized web pages. Users can upload specific I/O layout diagrams in either bmp, jpg, or gif format and can define a description for each I/O point. No HTML or Java skills are required in order to create the web pages.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 68

By default, no pages are listed on the initial “Web Page Configuration” page.

The ET-7X00/PET-7X00 Web Edit function allows the creation of up to 10 user-defined web pages.

A maximum of 10 pages can be created

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 69

Below is an example of how to create a customized web page.

Example

Objective:

Create a Web page to monitor the I/O status of a conveyor system, as shown below. The I/O system contains a sensor that is used to detect the products, and a switch that is used to turn the conveyor motor on and off.

Step 1：Add a New Page

Click the “Add a new Page” button to begin creating a new page.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 70

Step 2：Upload an Image

Click the “Browse…” button to select an image, and then click the “Upload” button to upload the image to the ET-7X00/PET-7X00 module, as shown in the figure below.

Tips & Warnings

The image can be in either .jpg, .gif, or .bmp format with a maximum file size of 64 kb. The recommended resolution for the image to be displayed on the editing Web page is 340 * 250 pixels.

After the upload is completed, the image information will be displayed and the image will be added to the “Image” dropdown list box, as shown below.

2. Click the “Upload” button to upload the image

1. Click the “Browse…” button to select an image

Image information

File name added to the

Image dropdown list box

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 71

Step 3：Set the Page Name and Select the Image

Enter a name for the page in the “Page Name” field and then select an image from the “Image” dropdown list box. After selecting the image, it will

be displayed in the preview window.

Step 4：Add the Register Item(s) that are to be used to read the selected sensor input

Click the “Edit” button from the first row in the Group table, and the “Edit Group Register” window will be displayed.

Click the “Edit” button to enter or modify the details of the register item(s)

Enter a name for the page and select an image

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 72

Step 5：Add a DI value that is to be used to

read “PHS” input

Set the PHS as an input (use the Modbus Register 0 (DI0)), and then select Discrete Input as the Register Type and enter the name PHS1 as the Alias, as per the figure shown below.

Step 6：Save the selected sensor settings

Click the “Save” button to complete the setup and save the register settings.

DI0

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 73

Step 7：Add the register item(s) that is to be used to write the selected motor output

After saving the register settings, the new register item will be displayed in the Group table.

If you wish to edit the details for an item, click the “Edit” button to access

the Edit Group Register page.

If you wish to delete a register item, click the “Clear” button.

Click the “Edit” button to enter or modify the details of the register item(s)

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 74

Step 8：Add a DO that is to be used to write

the “Motor” out put to turn the conveyor motor on and off

Set the Motor as an output (use the Modbus Register 0 (DO0)), and then select Coil and Write as the Register Type and enter Motor as the Alias, as shown in the figure below.

Step 9：Save the selected sensor settings

Click the “Save” button to complete setup and save the register settings.

DO0

By selecting “write” as the Register type, control button

will be shown on the web page. (Refer to Step 10)

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 75

Step 10：Browse the “Carriage” web page

After saving the editing page, a page named Carriage has been added to the list box on the top left-hand side of the Web Page Configuration window. Select the Carriage item and click the “Go” button to display to the Carriage web page.

The conveyer image file and the newly created register items will be displayed on the Carriage web page, including control buttons that can be used to switch the motor for the conveyor on or off.

Control buttons

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 76

3.5. I/O Pair Connection

The “Pair Connection” option in the Main Menu provides access to the configuration page for the pair connection function.

The pair connection function is a particular feature of the ET-7X00/PET-7X00 module that can be used to enable a pair of DI-to-DO (AI-to-AO) via Modbus/TCP. With the pair connection function enabled, the ET-7X00/PET-7X00 module can poll the status of remote input devices using the Modbus/TCP protocol and then continuously write to its output channels in the background.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 77

The Pair Connection function consists of the following parameters:

I/O Pair Connection: This item is used to enable/disable the I/O pair connection.

Remote IP Address: The IP address of the remote input device.

Remote TCP Port: The Modbus/TCP Port of the remote input device.

Connection Timeout: The length of time that the ET-7X00/PET-7X00 module should wait

for a connection to the remote input device.

Reconnect Interval: The reconnect interval is the amount of time between attempts by the ET-7X00/PET-7X00 module to reconnect with the remote input device.

Remote Net ID: The Modbus Net ID of the remote device.

Scan Time: The frequency that the remote input device will be polled.

Access Type: Enable/Disable the DI-to-DO (AI-to-AO) pair connection.

Local DO Base Address: The DO base address of the local DO register that will be mapped

to the remote DI device.

Remote DI Base Address: The DI base address of the Remote DI device that will be mapped to the local DO register.

I/O Count: The I/O count mapped from the base address.

Communication Timeout: The period of time that the ET-7X00/PET-7X00 module will wait

for a response from the remote DI device.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 78

3.5.1. Example 1: Pair Connection - AO to AI

In this example, we will show how to use this feature to achieve AI/AO mapping on two remote I/O devices.

Hardware devices:

PET-7026 (AIO/DIO module), ET-7017 (AI/DO module), PoE Switch, Power Supply (24 V), Power Supply (48 V).

Hardware Connections:

Software Configuration:

The following provides step-by-step instructions for how to configure the ET-7X00/PET-7X00 via the built-in web interface.

In this example, the AO0/AO1 of the PET-7026 must be mapped to the AI0/AI1 of the ET-7017. Later, when the AI0/AI1 of the ET-7017 receives the 5 V, the AO0/AO1 of the PET-7026 will automatically output 5 V.

Power Supply

24 V

PoE Switch

PET-7026

ET-7017

Power/GND (+10 ~ 30 VDC)

Power supply

48 V

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 79

Step 1：Log in to the PET-7026 web interface

Enter the IP address of the PET-7026 in the browser, and then enter your user name and password to log in to the PET-7026 web interface. Refer to

chapter 3, “Web Applications”, for more details.

Step 2：Configure the AO type for the PET-7026

Click the “Module I/O Settings” option in the configuration section of the Main Menu to open the “analog Output Settings” page and set the

voltage/current range to “-5 V - 5V”, and then click the “Submit” button. (Follow the same procedure to set the AI range for the ET-7017)

Tips & Warnings

The settings for both the AO type for the PET-7026 and the AI type for the ET-7017 must be the same. In this example, they are both “-5 V ~ 5 V”.

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ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 80

Step 3：Configure the Modbus Settings for the PET-7026

Click the “Pair Connection” option in the “Configuration” section of the Main Menu and enter the details noted in the table below info the respective fields.

Field

Settings

I/O Pair Connection

Select this option to enable the I/O pair connection functions.

Remote IP Address

This is the IP address of the ET-7017 (e.g. 192.168.1.204)

Remote TCP Port

502

Connection Timeout

3000 ms

Reconnect Interval

5000 ms

Remote Net ID

1 (Default = 1, the Net ID for the ET-7017)

To determine the Net ID, check the “Modbus Definition” section on the “Common

Function” page, which can be found by clicking the “Module I/O Settings” option in

the “Configuration” section of the Main Menu.

Scan Time

300 ms

Access Type

Select AO

Local AO Base Address

0, (Starting from AO0 on the PET-7026)

Remote AI Base Address:

0, (Starting from AI0 on the ET-7017)

I/O Count

2, (Using AO0, AO1 and AI0, AI1)

Communication Timeout

400 ms

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 81

After completing the configuration, click the “Submit” button to save the settings.

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ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 82

Testing:

Before beginning testing, check that the Data Format settings are the same for both the PET-7026 and the ET-7017. To do this, click the “Module I/O Settings” option in the

“Configuration” section of the main menu, and check the “Basic Settings” section on the “Analog Input” page.

Supply +5 V to AI0 on the ET-7017, and then click the “Web HMI” option in the “Web HMI” section of the Main Menu for the PET-7026, and then click the “AO” tab, where you will be able to check the AO0 value for the PET-7026.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 83

3.5.2. Example 2: Pair Connection - DO to DI

In this example, we will show how to use this feature to achieve DI/DO mapping on two remote I/O devices.

Hardware devices:

PET-7026 (AIO/DIO module), PET-7044 (DIO module), PoE Switch, and Power Supply (48 V).

Hardware Connections:

Software Configuration:

The following provides step-by-step instructions for how to configure the ET-7X00/PET-7X00 via the built-in web interface.

In this example, the DO0/DO1 of the PET-7026 must be mapped to the DI0/DI1 of the PET-7044. Later, when the status of the DI0/DI1 is switched to ON, the status of the DO0/DO1 will be switched to logic high automatically.

PET-7044

PoE Switch

PET-7026

Power Supply

48 V

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 84

Step 1：Log in to the PET-7026 web interface

Enter the IP address of the PET-7026 in the browser, and then enter your user name and password to log in to the PET-7026 web interface. Refer to chapter 3 “Web Applications”, for more details.

Step 2：Configure the Modbus Settings for the PET-7026

Click the “Pair Connection” option in the Main Menu, and enter the details

listed in the table below into the respective fields.

Field

Settings

I/O Pair Connection

Select this option to enable the I/O pair connection

functions.

Remote IP Address

This is the IP address of the PET-7044 (e.g. 192.168.1.99)

Remote TCP Port

502

Connection Timeout

3000 ms

Reconnect Interval

5000 ms

Remote Net ID

1 (Default = 1, the Net ID for the PET-7044)

To determine the Net ID, check the “Modbus Definition” section on the “Common

Function” page, which can be found by clicking the “Module I/O Settings” option in

the “Configuration” section of the Main Menu.

Scan Time

300 ms

Access Type

Select DO

Local DO Base Address

0, (Starting from DO0 on the PET-7026)

Remote DI Base Address:

0, (Starting from DI0 on the PET-7044)

I/O Count

2, (Using DO0, DO1 and DI0, DI1)

Communication Timeout

400 ms

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 85

After completing the configuration, click the “Submit” button to save the settings.

Testing:

First, set the DI0 status on the PET-7044 to ON, and then click the “Web HMI” option in the “Web HMI” section of the Main Menu for the PET-7026, and click the “DO” tab, you will notice the status of the DO0 has changed to “ON”.

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ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 86

3.6. More Information

The “More Information” option in the main menu will open the ICP DAS site in your browser and display the main introduction page for the ET-7X00/PET-7X00 series of modules, which provides more detailed information related to the modules.

The URL for this link can be changed by simply editing the URL. For more details, refer to section 3.2.2 “Configure the web interface information”.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 87

The default URL that the More Information item will link to:

http://www.icpdas.com/root/product/solutions/remote_io/ethernet_io/et-7000_introduct ion.html

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 88

4. Modbus and Modbus TCP/IP

Modbus is a serial communication protocol that allows a wide variety of instruments to be connected to a common data collection network.

Modbus/TCP is a variant of the Modbus communication protocol that allows devices to communicate over a TCP/IP.

With the support of the Modbus TCP protocol, the ET-7X00/PET-7X00 series module can communicate with PC-based applications, such as SCADA (Supervisor Control And Data Acquisition) and HMI programs. The Modbus/TCP information is only available via an Ethernet interface.

The Modbus/TCP messaging service provides a Client/Server communication between devices connected on a TCP/IP network. The ET-7X00/PET-7X00 module is a Modbus Server, meaning that it is only capable of responding to requests from the Modbus client device. Note that the Modbus/RTU protocol requires a serial interface, not Ethernet, and is therefore not directly compatible with the ET-7X00/PET-7X00 module.

The Modbus protocol, as well as the TCP extension, is well documented in the specifications, which are available at http://www.modbus.org, a website established by the Modbus Organization to provide support and organization for the Modbus protocol. Only the use of the protocol is documented here.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 89

4.1. Modbus TCP/IP Interface

The Modbus/TCP interface is attached to the TCP/IP stack that is implemented within the

ET-7X00/PET-7X00 module, and will listen to all communications that come in on

Modbus/TCP registered Port 502.

The Modbus/TCP client uses the standard TCP method for communicating with the

ET-7X00/PET-7X00 module. UP to 12 connections are possible at one time. If there are 12

active connections, any attempt at any more connections is ignored.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 90

4.2. Protocol Description

The Modbus protocol defines a simple protocol data unit independent of the underlying communication layers. The mapping of Modbus protocol on network can introduce some additional fields on the application data unit.

Modbus/TCP Application Data Unit

MBAP Header

Function Code

Data

Protocol Data Unit

MBAP

The Modbus/TCP extension includes 7 additional bytes to the original Modbus protocol, which allows for transport over the TCP/IP layers.

A dedicated header is used on TCP/IP to identify the Modbus Application Data Unit. It is called the MBAP Header (MODBUS Application Protocol Header). The MBAP Header consists of 7 bytes of information:

Field

Length

Description

Transaction Identifier

2 bytes

Identification of Request/Response transaction – Copied from request to response

Protocol Identifier

2 bytes

0 = Modbus protocol

Length

2 bytes

Number of following bytes - Includes the Unit Identifier

Unit Identifier

1 byte

Identification of remote slave

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 91

Function Code

The function code field of a Modbus data unit is coded in one byte. Valid codes are in the range of 1 ... 255 decimal (the range 128 - 255 is reserved and used or exception responses). When a Modbus request is sent from a Modbus Client to a Server device the function code field tells the Server what kind of action to perform.

The Modbus/TCP feature of ET-7X00/PET-7X00 series module supports 8 function codes, which allows the reading and writing of data contents of registers.

Function Code

Function

01 (0x01)

Read Coil Status

02 (0x02)

Read Input Status

03 (0x03)

Read Holding Registers

04 (0x04)

Read Input Registers

05 (0x05)

Force Single Coil

06 (0x06)

Preset Single Register

15 (0x0F)

Force Multiple Coils

16 (0x10)

Preset Multiple Registers

Any other function code request will be returned with an error response indicating the function code is not supported, as well as a request for too much data or data at a register address that not present.

Data

The data field of Modbus request sent from a client to server devices contains additional information that the server uses to take the action defined by the function code. This can include items like discrete and register addresses, the quantity of items to be handled, and the count of actual data bytes in the field.

The data field may be nonexistent (of zero length) in certain kinds of requests; in this case the server does not require any additional information. The function code alone specifies the action.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 92

Response

If no error occurs related to the Modbus function requested in a properly received Modbus PDU (Protocol Data Unit) the data field of a Modbus response from a server to a client contains the data requested. If an error related to the Modbus function requested occurs, the field contains an exception code that the server application can use to determine the next action to be taken.

For example a client can read the ON/OFF states of a group of digital input or output or it can read/write the data contents of a group of registers.

When the server responds to the client, it uses the function code field to indicate either a normal response or that some kind of error occurred (called an exception response). For a normal response, the server simply echoes to the request the original function code.

For an exception response, the server returns a code that is equivalent to the original function code from the request PDU with its most significant bit set to logic 1.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 93

4.3. Data Encoding

Modbus uses a “big-endian” representation for address and data items. This means that when a numerical quantity larger than single byte is transmitted, the most significant byte (MSB, also called the high-order byte) is send first. The following sub-topics describe the different byte of encoding and show how the data is encoded as it is within the Modbus/TCP packet.

4.3.1. Binary

A binary item is represented as a single bit within a data word. All binary is packed into 16-bits data words, which are accessed using function code 01 and 02. Therefore, a single register contains 16 bits of binary data, each having a specific meaning.

Value

1st

2nd

0xAA55

(1010101001010101)

0xAA

(10101010)

0x55

(01010101)

4.3.2. 16-bits Word

A 16-bits word item is transmitted with the most significant byte first. Function code 03 and 04 read 16-bits items at a time; therefore, each of these data items will fit within one register that is read.

Value

1st

2nd

0x1234

0x12

0x34

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 94

4.4. Data Model

Modbus bases its data model on a series of tables that have individual characteristics. The four primary tables are:

Primary table

Data type

Type of access

Discrete Input

Single bit

Read-Only

Coils

Single bit

Read-Write

Input Registers

16-bits word

Read-Only

Holding Registers

16-bits word

Read-Write

To access each entry in to the four primary tables, a starting address (0 indicates the first entry in the table) is required as well as the number of registers that are requested.

For each of the primary tables, the protocol allows individual selection of 65535 data items, and the operations of read or write of those items are designed to span multiple consecutive data items up to a data size limit which is dependent on the transaction function code.

Once the data is stored within the local tables, the driver does not differentiate what is stored in them. The Modbus/TCP client needs to know what data is stored in which register locations to be able to retrieve it, process it, and/or display it.

ET-7X00/PET-7X00 User Manual, version 1.1.2 Page: 95

4.5. Modbus Functions and Registers

4.5.1. 01 (0x01) Read Coils

This function code is used to read the status of coils in an ET-7X00/PET-7X00 module. The Request PDU specifies the starting address, i.e. the address of the first coil specified, and the number of coils. In the PDU Coils are addressed starting at zero.

The coils in the response message are packed as one coil per bit of the data field. Status is indicated as 1=ON and 0=OFF. The LSB of the first data byte contains the output addressed in the query. The other coils follow toward the high order end of this byte, and from low order to high order in subsequent bytes.

If the returned output quantity is not a multiple of eight, the remaining bits in the final data byte will be padded with zeros (toward the high order end of the byte). The Byte Count field specifies the quantity of complete bytes of data.

Here is an example of a request to read digital outputs of ET-7026/PET-7026 module:

Request

Response

Field Name

(Hex)

Field Name

(Hex)

MBAP Header

01

MBAP Header

01

02

00

06

04

Unit Identifier

01

Unit Identifier

01

Function Code

01

Function Code

01

Starting Address Hi

00

Byte Count

01

Starting Address Lo

00

Outputs status 0-1

02

Quantity of Outputs Hi

00

Quantity of Outputs Lo

02

The status of outputs 0-1 is shown as the byte value 02 hex, or binary 0000 0010. DO1 is in the seventh bit position from the left, and DO0 is the LSB of this byte. The six remaining high order bits are zero filled.

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