This applies to Sigma, Nucleus, Matrix, AWS and Duality
One-way communication generally has to do with network IGMP multicast capability. It could also be a simple matter of the OS firewall blocking the ipMIDI app. Additionally, some TP-Link brand switches do not handle multicast correctly.
Please search our articles for multicast for information on how to resolve by changing your network connection arrangement or switch:
- Dealing with multiple Ethernet adapters
- Integrating ipMIDI, Delta Control, or multiple consoles with existing networks
There was one instance having to do with Pro Tools 10.2 that may affect other versions. This may happen if you are not running Pro Tools as an administrator. To run any application as administrator, right-click the app icon and click "Run as administrator. It was observed that Pro Tools responded normally to SSL control surface data, but control data from Pro Tools would not reach the SSL. For example, while the SSL faders would correctly control Pro Tools on-screen faders, moving a fader in the Pro Tools would not cause the corresponding SSL fader to move. Running Pro Tools as administrator resolved this issue.