Centralbox 200 with YGE 205HVT no access via Jetibox emulation Transmitter DC16-

If I try to control the YGE 205HVT with the DC16-2 via the Jetibox emulation : under ...MX.... down, then ....CB200> ....right, then under.... 3> .....EX BUS.... to the right, only ----Waiting for Device---- appears. I can control and set my MT 125 temperature sensor here at...... 2> ........ The telemetry displays of the YGE 205HVT work perfectly via the EX Bus PIN 14 CB. Does anyone have a solution here?