Redundant PLCs

• How do you implement a redundant PLC into your overall system?
• Do you define the Channel.Device in the OPC Server twice?
• Do you have your client monitor the error tags and write to the server to configure it dynamically?
• If a device goes off-line, how do you get your client applications to switch over to use the other PLC?

OPC Server Manager Adds a Switch to your Device	No Manager
Automatically checks for comm. errors and switches Devices on the run. Not limited to a Single Redundant Device All Changes are Logged Notification of Changes via E-mail Single Edition Does All This Network Edition Only Needed with Multiple OPC Servers or Remote Management	Any additional functionality must be custom coded and requires the use of additional tags in many HMI's Not all Clients have ability to do E-mail notification. Logging may require use of additional tags or products.