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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 IP Watcher

Switching the digital output of a Web-IO in alarm situations

Switch an output on a digital Web-IO via TCP client message when a watched network component is no longer reachable. Deactivate the output when the watched device responds again. The commands for switching the output are sent to the HTTP port of the Web-IO in the form of parameterized command strings.

  • Easy start
    Once the IP-Watcher has been configured for your network and connected, the following steps are necessary:
    Step 1
  • Enter the IP address of the device in the address line of your browser.

    Show the configuration menu.

    Select menu point Config and log in.

    Step 2
  • Go to the page

    Config >> Device >> Basic Settings >> Network

    and enter any missing network parameters.

    Step 3
  • On the page

    Config >> Device >> IP Watch List

    add the IP address you want to monitor to the list.

    Step 4
  • Go to page

    Config >> Device >> Alarm >> Alarm X

    and configure the points: Alarm Enable, IP Watch List, Trigger Count, Polling Rate and Interval to specify the alarm condition.

    Optionally you can assign a name to the alarm, which is displayed on the watch pages.

    Step 5
  • Activate TCP Client enable and apply the changes by clicking on Apply.

    Step 6
  • On the bottom activate TCP under Enable Text these options: Alarm ON message and Trigger OFF message.

    For IP Addr enter the IP address of the Web-IO on which you want to swtich an output.

    For Port enter the HTTP port of the remote Web-IO.

    Step 7
  • To activate the first output (Outpu 0) under Alarm Text enter the command string shown at right.

    The example assumes that the digital Web-IO is not password protected.

    GET /outputaccess0?PW=&State=ON&
  • If the watched device can be reached again, the message appearing under Trigger OFF Text is sent.

    The command shown at right deactivates the previously activated digital output.

    Apply the changes by clicking on Apply the changes by clicking on, use Logout to log out and save all your changes.

    That’s it!

    GET /outputaccess0?PW=&State=OFF&