PSSu E S ABS SSI 312480 PSSu, electronic module, standard, counter, 1 input, absolute encoder SSI encoder, differential signal RS422, resolution 32 Bit, 7 transmission rates, 62.6 – 1500 kHz. The PSSuniversal PLC controllers are a suitable solution for interlinked, complex plants. They can be used as part of a network or as a stand-alone system.