How do I set the FT8501/FR85041 for Bi-directional communication.


Bi- direction communication using RS-422, and RS-485 media.

Product Line

Pelco Transmission & Power


  • RS422 4 Wire
  • RS-485 2 Wire and 4 Wire
  • FT8501/FR8501
  • FT8504/FR8504


Installation and Service


With the FT85011A transmitter and the FR85011A receiver powered off, set the Data Selection switch to the required data communication setting using a small screwdriver.

Switch setting 2 and 3 is used for half and full duplex communications.

NOTE This is normally used when there is a requirement to send and receive data from headend to camera or keyboards to controllers.