PowerFLARM Core and PowerFLARM Portable has the option to transmit traffic data to a connected system, using the Garmin TIS protocol over RS-232. This requires a feature license, which can be acquired in the webshop. It also requires the FLARM data port, to which the external system in connected, to be configured for Garmin TIS. This can be done by using the online configuration tool.
It's not possible to transmit the data over ARINC 429.
Unfortunately, we don't have a list of systems which support Garmin TIS over RS-232. It's also not as simple as that, since it also depends on what other equipment that have been connected to the external system other than FLARM, and via which connector/port. This information should be available in the system installation documentation, as well as the installation design documents from the installer.
You should however note that it's not sufficient to connect FLARM to a display using Garmin TIS. The FLARM data port protocol contains much more information, including collision warnings, which is required for a FLARM installation. A FLARM device should primarily be connected to a certified FLARM Compatible display. Other displays may show some limited traffic information, but will in most cases not issue or show FLARM collision warnings, status information, error conditions, obstacle warnings, etc. In addition to a certified FLARM Compatible display, it's however possible to connect FLARM to a secondary display for integrated traffic information, e.g. via Garmin TIS.
Several EFIS/MFD manufacturers are currently working to implement the FLARM data port protocol, so we recommend inquiring the status of implementation from the system manufacturer.