  The time-of-flight (TOF) system in the Compressed Baryonic Matter (CBM)
experiment is composed of super modules based on multi-gap Resistive Plate
Chambers (MRPC) for high-denseness, high-resolution time measurement. In order
to evaluate the quality of detectors during the mass production, a distributed
data readout system is developed to meet with the high data rate of 6.4Gbps,
and a related data acquisition (DAQ) software is implemented under Linux
operating system to test and verify the feasibility of the distributed data
readout method. In this paper, the DAQ software is focused on data collection,
event building, status monitoring and system controlling. Laboratory tests
confirmed the function of the DAQ software and show that the overall data
transfer rate of a single data transmission path can reach up to about 550Mbps
which already meet the demand.
