4 rs485 local control using dvr protocols, 1 enable rs485 control on outputs 1 & 2, 2 enable rs485 control on outputs 3 & 4 – Videoswitch Vi-R4000 Series User Manual

Page 49: 3 set rs485 protocol for outputs 1 & 2, 4 set rs485 protocol for outputs 3 & 4, Vi-r4000 series