W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI

Application for the Web-IO Digital:

Detect and control switching signals with OPC DA

Classical OPC has over the years developed into a standard in the industrial field for combining process data from components made by various manufacturers.

Capture switching signals with OPC DA

But many controllers, components and machines are unable to provide the possibility of an OPC connection.

In most cases, operating states are simply indicated using potential-free contacts. With our Web-IO Digital products you can monitor such contacts and use the free W&T OPC server to detect and further process them as OPC items on the control level.


Configuring Web-IO for access via OPC DA

For access via OPC DA to take place, the Web-IO must already have an IP address.

  • To change the configuration of the Web-IO you first need to obtain the necessary access rights by entering the administrator password.

    Box to Box Master
  • First check whether all the IP parameters are correctly configured. Especially when the FTP server is addressed using a host name it is important that both the gateway and the DNS server are entered. To do this, in the menu tree select Basic settings >> Network and there Basic network settings.

    Web-IO FTP Logger

  • All the configuration changes must be confirmed using the Apply button.

  • To configure FTP access to to the menu tree and select Communication channels >> FTP.

    Web-IO FTP Logger

  • Enter the access data for the FTP server.

  • In the menu tree click on Actions and then on the Add button.

    Web-IO FTP Logger
  • Assign a meaningful name for your action and select the trigger for writing using FTP.

  • As the action select FTP Message and configure FTP file name and FTP text (if needed also for the Clear message. In the FTP text move the cursor to the end of the line by pressing the Enter key. Now each entry in the file will be in its own line. The <t> tag is replaced with date and time when writing to the file.

Once these steps are completed, any changes in the connected switching states are collected in one or more files chronologically.

You don’t have a Web-IO yet but would like to try the example out sometime?

No problem: We will be glad to send you a unit at no charge for 30 days. Simply fill out the sample order form and we will ship the Web-IO on open invoice for testing. If you return the device within 30 days, we will cancel the invoice.

To the Web-IOs

Are you still uncertain which Web-IO is best for your needs?

Our qualified team of engineers will be glad to assist you.
You can reach us by telephone at +49 202/2680-110 or by email at info@wut.de.