Use the search and browse feature to view Kepware's repository of more than 500 Knowledge Base articles. Narrow your results or type your query into the search field below.

Search Solutions Results By: View All Solutions

Kepware Knowledge Base: Solution


Examples of Media Level Redundancy


Last Update: 11/7/2018

The Media Level Redundancy Plug-In supports two types of redundancy: Communications Path Redundancy and Device Pair Redundancy. Communications Path Redundancy is used to communicate with the same device over multiple communications methods. For example:

  • A device supporting communications via TCP as well as RS-485/RS-232 serial ports. The device could be to set up with a primary communications path via TCP but then fall back to RS-485 if there are issues with the Ethernet network.
  • A PC/machine with multiple Ethernet cards communicating with a single device can establish primary communications through a primary Ethernet card and fall back to the secondary Ethernet card.
  • A PC/machine supporting multiple RS-485/RS-232 serial ports and a device with multiple RS-485/RS-232 serial ports. The RS-485/RS-232 Port 1 of PC and device could be set up as the primary and fall back to Port 2 of PC and device.

Device Pair Redundancy is used to communicate with two identical devices configured as a redundant unit (each running the same logic). For example:

  • Two devices are on the same RS-485 network monitoring the same process condition. Client monitoring software must be able to receive information from at least one of these devices to maintain the information integrity.

See Also: Media Level Redundancy Plug-In