  For precise start time determination a Beam Fragmentation T$_0$ Counter
(BFTC) is under development for the Time-of-Flight Wall of the Compressed
Baryonic Matter Spectrometer (CBM) at the Facility for Antiproton and Ion
Research (FAIR) at Darmstadt/Germany. This detector will be located around the
beam pipe, covering the front area of the Projectile Spectator Detector. The
fluxes at this region are expected to exceed 10$^5$cm$^{-2}$s$^{-1}$. Resistive
plate chambers (RPC) with ceramic composite electrodes could be use because of
their high rate capabilities and radiation hardness of material. Efficiency
$\ge$ 97\%, time resolution $\le$ 90 ps and rate capability $\ge$
10$^5$cm$^{-2}$s$^{-1}$ were confirmed during many tests with high beam fluxes
of relativistic electrons. We confirm the stability of these characteristics
with low resistive Si$_3$N$_4$/SiC floating electrodes for a prototype of eight
small RPCs, where each of them contains six gas gaps. The active RPC size
amounts 20$\times$20 mm$^2$ produced on basis of Al$_3$O$_2$ and
Si$_3$N$_4$/SiC ceramics. Recent test results obtained with relativistic
electrons at the linear accelerator ELBE of the Helmholtz-Zentrum
Dresden-Rossendorf with new PADI-10 Front-end electronic will be presented.
