Gateway for XIP - Unitelway TN 15 Schneider PLC · Gateway for XIP - Unitelway Schneider PLC TN 15 ver 1_4 10/27/05 For all eWON types page 1 of 22 1 Purpose ... In this document,

Gateway for XIP - Unitelway Schneider PLC

TN 15ver 1_4

10/27/05

For all eWON types

1 Purpose

This Technical Note describes how to set up a remote collaboration. A remote collaboration consists in configuring, programming or monitoring a PLC from a remote location, without the need of connecting directly the PC to the PLC. A remote collaboration therefore involves a TCP/IP connection and eventually a router, depending on the protocol that is used by the PLC.

In this document, we will configure a complete remote collaboration system with a TSX Premium, the PL7 Pro software and, of course, an eWON acting as a router. The TSX Premium uses the Unitelway protocol.

Three cases of remote collaboration will be treated:

• A direct connection to the eWON by Ethernet.• A direct connection to the eWON using a phone line. With this topology, the eWON IP address is known

since it is established with your own PC at the PPP connection time.• A connection to the eWON using Internet and callback. This kind of connection can be used with callback:

we call the eWON and let ring a certain amount of time, then we hang up. After a specified amount of time, the eWON connects to the ISP by using its phone line. In this case, the eWON IP address is not known, so that the eWON must publish it’s address, by mail for instance. This document will start with the first topology, then, when this configuration is running, the changes needed for the second one will be described.

The following graph shows the three network topologies.Network topologies:

Figure 1: Network topologies

This document describes the three topologies. A direct Ethernet connection will be used to describe the global setup. After this configuration is working, the changes that are required for the phone and Internet topologies will be described too.

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In order to follow this technical note, you need:• An eWON® 2001 or 4001 with a PSTN modem and a firmware release firmware version 4.xx. The latest

releases can be found on our website: http://www.ewon.biz (Support/Download Software).

• A modem connected to your PC for direct phone connection with the eWON.• An Internet connection account, both for your PC and for the eWON.• A TSX Premium or TSX Micro.• A TSX CX 100 cable from Schneider*• A cable to directly connect the PLC to the PC, like the TSXPCX 1031• PL7 (in this document, PL7 PRO V4.1 is used)• You should double check too that your eWON serial setup pins are configured for a RS485 link (please

check the 4 dip switches that are located on the left side from your eWON.

In this document, we use Windows XP, but any operating system supported by PL7 Pro can be used. We also assume the reader has some knowledge of the PL7 software.

*Be careful that the D(B) signal corresponds to the A signal on the eWON and the D(A) corresponds to the B on the eWON (see chapter TSX CX 100 Schneider cable (between eWON and the PLC) - Pinout on page 22).

2 Configuration Steps Overview

Starting with an eWON out of the box, this document will show how to set up a remote collaboration using several steps. The purpose of some of those steps is to test what has been set up so far. Those steps are therefore not absolutely necessary, but can be really useful to localize a potential problem. The steps are:• Setting up a test program in the PLC using a direct Unitelway connection PC PLC.• eWON Unitelway IO server configuration.• Set up a Tag to test the Unitelway configuration.• Configuring the eWON for XIP usage.• Installing and configuring the XIP driver.• Using the Remote Collaboration.

After each of these steps, a small test will be described to check the step has been executed correctly.

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3 PLC Configuration

We will put a small program in the PLC, so that we will be able to test the connection between the eWON and the PLC in the next section. To first set up the PLC, we will need a direct connection between the computer and the PLC. To do this, connect the PLC terminal port (TER) to the PC serial port (cable TSXPCX 1031 for instance). Once done, open PL7 PRO.

3.1 PLC Test programPLC ConnectThe information is downloaded from the PLC to the PC and a screen such as the one below then appears:

Figure 2: PL7 PRO

If you already have a program installed in the PLC, save it. The program we will create contains a simple counter. We will use Ladder to build it.

Create the following program as a master section:

Figure 3: Test Program (Ladder)

Confirm the program, disconnect from the PLC and reconnect. Transfer the program from the PC to the PLC and start the PLC.

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4 eWON Configuration

4.1 eWON IP address configurationIn this section, we will show how to configure the eWON to access the PLC registers through an IO server configuration. The forwarding will be treated later.Setting the eWON IP AddressThe eWON is configured through its web server*. Right out of the box, the eWON has “10.0.0.53” as IP address. You can find the eBuddy utility on the eWON web site (http://www.ewon.biz (Support/Download Software)). This utility allows to find an eWON on the network and to change its IP address to match your LAN IP adresses range.

* It is also possible to configure the eWON by dropping into it a file using an FTP client, but this is a more complex process that is explained in the eWON User Guide.

• Finding an eWON on the network with eBuddyLaunch eBuddy.exe and click CTRL+L to switch in list mode if not the case. The list of the eWONs that are connected on the network then appears:

• Setting the IP address from an eWONIf the eWON you want to set the IP address is in the list, just right-click on it, and select Set IP Address in the contextual menu (if the eWON is not in the list, then right-click in the blank area under the list):

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Enter the eWON serial number in the Serial Number field if not yet done, or click on the Browse button. In this case, the dialog box below then displays:

Select the eWON of which IP address you want to modify and click OK.You then come back to the previous wizard page, in which you must then enter the Username and Password fields that are required to connect to the eWON:

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Then click on Next and set the IP Address and Subnet Mask:

Then click on Next again to launch the update and wait for the eWON to reboot:

When done, click on Finish to exit from the IP Address Wizard.

Now your eWON should appear in the eBuddy list with the new informations you have entered.

Testing the eWON IP Address

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To test that the IP address has been assigned successfully, open a command prompt and ping the eWON.

• Open a DOS command prompt and enter “ping <address>

where <address> must be replaced by the newly assigned address.

If the address has been correctly assigned, you should see the Ethernet led of the eWON blinking and the following screen:

Figure 4: Pinging the eWON

If, instead of a response time, you get a “request timeout” message, there is a problem and the steps must be reviewed.

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4.2 eWON Web SiteWe have assigned an IP address to the eWON, so we can reach its HTTP server to configure it.Open a Web browser and type the address you assigned to the eWON in the address bar (10.0.0.29 in that case).

The following login page then appears:

Figure 5: eWON login page

A preconfigured adm user exists to allow the first configuration*.

User name admPassword admThen click on Enter. The following page appears:

* The default password of the adm login MUST be changed for obvious security reasons. Refer to the User Guide to get explanations on how to change a user password.

Figure 6: eWON main page

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4.3 UNITELWAY IO ServerNow that we have access to the website, we will configure the eWON to connect to an Unitelway network.The eWON embeds what is called IO Servers. Those servers are responsible of collecting the data on the network and make them available for further usage. Once the eWON can interact with the PLC, the variables of the PLC will be available as Tags.The IO servers are configured by accessing a specific web page that you can reach by clicking on the link IO Server Config from the eWON configuration navigation bar.

Set Unite in the IO Server scrollist. The following page appears:

Figure 7: Unitelway configuration page

• Set the Baud Rate to 9600• Check the Enabled box for topic A• Set the Master response timeout to 1000• Set the Global Device Address of topic A to 0, 254, 0• Set the Poll Rate of topic A to 1000• Update Config

We don’t use the XWAY address so far so it will be treated in a following chapter.

The following web page appears:

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4.4 Checking the Unitelway connectionWe will now create a Tag to read a variable into the PLC.The creation of a Tag is done in the Tag Setup page which looks as the screenshot below:

Figure 8: Tag Setup page

Click on Create New Tag.

The Tag edition page appears. The page is divided into six parts in which you can configure the Tag name and description, the Tag IO server, the Tag visibility, the Tag alarm, the Tag historical logging and the Tag real-time logging (data logging is available on eWON® 4001 only).In this tutorial, we will only care about the Tag name and IO server.

Figure 9: Tag naming and IO server configuration

• Set the Tag Name to “MW0”• Set the Page to “Default”• Set the Tag Description to “Unitelway test counter”• Set the Server Name to “UNITE”• Set the Topic Name to “A”• Set the Address to “MW0”• Set the Type to “Analog”• Check Force Read-Only• Let the eWON value to “1”and “0”• Click on Add/Update Only

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The following page appears:

Figure 10: Tag Setup page

Now that we have created a Tag, we will check check it’s value, by clicking on the View I/O link:

Figure 11: Tag View page

Connect the PLC to the eWON using the TSX CX 100 cable. The RS485 led should blink very quickly.Click Update at one second of interval. You should see the Tag value increasing.

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5 XIP

The next step in the configuration is to set up the eWON and PL7 to use XIP. The eWON needs to provide XIP to Unitelway routing. The PL7 software needs to use an XIP connection instead of a direct Unitelway driver to reach the PLC.

The routing principle can be described as follows:• the PL7 software sends a request by using the XIP driver installed on the PC• the request is sent to through TCP/IP with a destination address set to the eWON XIP address• the eWON detects that the XIP address is its own address and forwards the packet on the Unitelway

network after changing its destination address to 0.254.0• the PLC eventually answers the eWON which forwards the answer to the address of the XIP driver.

From the XIP driver point of view, everything appears as if the eWON was the XWAY master. The eWON is configured as a normal Unitelway client.

5.1 eWON XIP ConfigurationTo enable the routing, we need to assign the eWON an XIP address, so that the XIP driver knows where to send the requests. We can do so from the IO Server Config/UNITE page.

• Change the XWAY Network Address to 13.14• Save the configuration

5.2 XIP Driver ConfigurationIf it is not already done, install the XIP driver on your PC. The configuration can be done using the XWAY driver manager software.

Launch this program and select the XIP Driver tab. The following window appears:

Figure 12: XWAY driver manager

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Click on Configuration. The following screen appears:

Figure 13: XIP Driver configuration

Set the configuration as shown on the figure, except for the eWON IP address, that you must set to an address you assigned in a previous step (c.f. page 4.).

The local host address is the address the XIP driver will have.

The remote host XWAY and IP addresses are the addresses that will be assigned to the eWON in the next section.

• Click on Add• Then on Save• Then on Start in the XIP menu

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5.2.1 Testing the XIP Connection

5.2.1.1 Physical connection

The physical connection with the eWON can be tested by pinging the eWON.• Select ICMP Ping in the Test menu• Then click on Ping.You should get the following screen:

Figure 14: ICMP PING test

5.2.1.2 XIP Mirror request

The XIP protocol connection can be tested by sending a mirror request to the PLC.• Close the ICMP Ping window• Select the XWAY Test TabThe following window appears:

Figure 15: XWAY Test window

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• Select “XIP01” in the driver name drop down box• Set the Remote Address to 13.14 (the eWON XWAY address)• Click on Connect• Click on StartYou should see the Request counter increasing quickly• Click on Stop.

5.3 TroubleshootingIt seems the previous steps raise some problems on certain configurations. If that happens, get back to the XIP driver configuration steps. After you have saved the configuration, exit the driver manager software and restart it, then start the XIP driver as previously described.

6 Remote Collaboration

Finally, we will use the just set up connection to download the program from the PLC to the PL7 software.

• Open PL7• Choose PLC Define PLC Address

The following window appears:

Figure 16: Define PLC address

• Select XIP01 as the driver• Change the address to “{13.14} SYS”• Click on OK• Click on Connect in the PLC menu

The program is downloaded into PL7. From now on, the remote collaboration can start.

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7 Remote Collaboration with Direct Phone Connection

In this section, we will set up a remote collaboration using a PPP link that is established between the PC and the eWON. Some changes are needed in the eWON in order for it to act as a PPP server, and eventually on the PC to set up the correct routing tables.

7.1 eWON PPP ConfigurationThe eWON Dial Up (PPP) configuration page is accessed from the System Setup/Com Setup menu.

On this page, the sections Global Dialup Config and Incoming Calls Config contain every information we need to fill in:

Figure 17: Dialup setup

• Set the Call direction allowed to Incoming Only• Set the PPP server IP address to “202.0.0.240”• Set the PPP server IP mask to “255.255.255.0• Set the PPP server gateway to 0.0.0.0 (no packet forwarding to another network)• Set the PPP client allocated IP address to “202.0.0.1”• Validate by clicking on Update Dialup Setup.

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7.2 XIP Driver ConfigurationThe IP address of the remote host must be set to the eWON PPP server IP address (here it is “202.0.0.240”).• Open the XWAY driver manager• Under the XIP Driver tab, click on Configuration• Select the previously configured host• Change the IP address on the remote host to “202.0.0.240”• Click on Update.You should get the following screen:

Figure 18: XIP driver configuration

Click on Save.Important Note:The default configuration of the TSX Premium PLC is to communicate at the speed of 19200 bps. The eWON GSM maximum connection speed is 9600 bps. In order to establish the link between the eWON and the TSX, you must first change the speed in the TSX program configuration. This can be done using the direct PC to TSX cable (TSWPCX 1031).

With multiple network profiles, you must link your XIP profile to the PPP link (202.0.0.1).

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7.3 Starting the Remote Collaboration• Call the eWON with the username “adm” and the password “adm”, and wait for the connection to be

established, this step can take up to one minute.• To test the connection, you can ping the eWON at its address 202.0.0.240• If the XWAY driver manager is not started, start it• Click on Start in the XIP menu from the XIP Driver configuration• You can test the connection in the same way with mirror requests (c.f. page 14.).• Start PL7• Select Define PLC Address in the PLC menu• Select the “XIP01” connection as you did before• Click on Connect in the PLC menu• The PLC is now accessible, as if you were directly connected to it.

8 Remote Collaboration through Internet

In the previous section, the IP address of the eWON was known at connection time. If the eWON is used with callback to connect to Internet, the IP address allocated to the eWON is assigned by the ISP and is usually different at each connection. We must therefore ask the eWON to publish its IP address after it has been assigned by the ISP, so that we can configure the XIP driver to use that address.

8.1 ISP ConfigurationThe ISP phone number, login and password must be configured to allow the eWON to connect to Internet. This is done in the Dialup (PPP) section we have already seen before.

Figure 19: Global Dialup configuration - call direction

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Figure 20: Outgoing Calls configuration

• Set the Call direction allowed to “Incoming and Outgoing”.• Enter the Server Phone Number, User Name and Password that have been provided to you by your ISP in

the Primary Server• Let the Secondary Server fields empty• Depending on your ISP, other parameters like Compression or CHAP could be necessary.

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8.2 PPP IP Address PublishingWe will use the easiest way to publish an IP address: an email. For this, we need to configure an SMTP server and an address where to send the information to.The SMTP server configuration is part of the Main Setup of the eWON (Configuration/System Setup/Main Setup):

Figure 21: eWON SMTP config

• Enter the STMP Server Address (can be an URL or an IP address)• Enter the SMTP Server Port• Enter the “From” address, compatible with your ISP (for example: [email protected])• Click on Update Config (a message appears telling your configuration has been saved successfully)• The address publishing is a built-in facility of the eWON. The configuration of the email address where to

send the email containing the address is therefore directly configured into the Callback section (System Setup/COM Setup/Callback):

Figure 22: eWON callback configuration

• Check the Enabled box• Enter your email address in the field Publish IP address Email• Click on Update Callback Setup.

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8.3 Starting the Remote Collaboration• Call the eWON and let ring four times, then hang up• The eWON calls back the ISP, connects itself to Internet and then sends an email with its IP address• You will receive an email named “eWON callback” looking as follows:

Figure 23: Callback email

We now need to set the remote host IP address to the eWON PPP IP address in the XWAY Driver Manager:

Figure 24: XIP driver configuration - eWON PPP IP address

• First stop the XIP driver• Change the IP address to the one written in the email you have just received• Click on Update• Click on Save• Click on Start in the XIP menuYou can now make the test as described previously (c.f. page 14.)• Select Define PLC Address in the PLC menu• Select the “XIP01” connection as before• Click on Connect in the PLC menu

You can now access the PLC as if you were directly connected to it.

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9 Appendix

9.1 TSX CX 100 Schneider cable (between eWON and the PLC) - PinoutThis 2m cable can be delivered as accessory to connect Shneider PLCs; it has a SUBD9 connector at the eWON side and a MiniDIN connector at the PLC side.

Figure 25: Minidin connector

MiniDIN PIN Schneider Signal Name eWON Signal Name eWON SUBD9 PIN

1 D(B) A+ DB9 pin 3: A+

2 D(A) B- DB9 pin 8: B-

3

4

5

6

7 GND GND DB9 pin 5:GND

8

Connector Shiedl

Table 1: Schneider cable pinout

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Documents

Gateway for XIP - Unitelway TN 15 Schneider PLC · Gateway for XIP - Unitelway Schneider PLC TN 15 ver 1_4 10/27/05 For all eWON types page 1 of 22 1 Purpose ... In this document,