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Connection options in an Ethernet network

There are 2 main approaches to establishing a connection between your host and the readers:

  • Client: The application acts as a client and opens a connection to the passively waiting readers.
  • Server: The application acts as a server that waits for readers to open a connection when certain events occur.

The following table shows you when to use which approach and gives you an overview of your implementation options.




Connection initiation The host opens a connection to the readers. Readers open a connection to the host in certain events.
Network topology

Use this approach if your network meets both of these conditions:

  • Manageable number of readers

    Parallel threads can be maintained without performance loss.

  • Readers not behind a firewall

Use this approach if your network meets either of these conditions:

  • Large number of readers

    Parallel threads will impact host/network performance.

  • Readers are behind a firewall
Reader detection Only needed for deployment of initial network settings via BALTECH Uploader (see below). After that, readers establish connections to the host.
Deployment of initial network settings
  • Via BALTECH Uploader
    Note: This tool always runs in Ethernet client mode and thus needs to be able to detect the readers. This is an option in the following cases:
    • You run Uploader in the same subnet as the readers and detect them via SLP.

      This currently requires PKI encryption.

    • Readers use known static IP addresses.

      This currently requires PKI encryption.

    • You connect the readers in maintenance mode before installation.
  • Via ConfigCard
  • Via host application
    Note: Readers need to find the host via UDP introspection. This is an option if both of the following apply:
    • Readers are not protected by a firewall.
    • Each reader is connected to a PC (or another network device) with a known IP address.
Operation modes Use any mode. Pick the one that suits your requirements best. Readers must be set up for autonomous operation. Use one of the following modes:
  • Autoread

    to read a number

  • VHL & Autoread

    to read data other than a number, write data, or format cards

All modes include step-by-step instructions on setting up the host-reader connection.

Explore Modes Autoread   VHL & Autoread

Would you like some personal advice?

As you see, there are various options of setting up a host-reader connection in an Ethernet network. If you're unsure of what's the right approach for you, we're happy to give you personal advice. Just get in touch with us.