[en] The package of programs for the SPIN installation used for experiments on studying the π(p, n)2π reaction on a polarized target is described. The measurements are conducted by means of a spark spectrometer on-line with the ES-1010 computer. The specific features of programs for data acquisition and processing as well as the programs for the installation operation and experiment process control are considered. Analysis of the data obtained by means of the programs under consideration gives an opportunity to check track efficiency, to determine particle angular and coordinate distributions at any distance from the target and to measure the incident beam momentum in real time. Experimental data obtained at the SPIN installation confirm the consi - dered program reliability. The conclusion is made that the program application gives large time advantage during the electronic equipment and whole installation tuning