FATEK FATEK PLC plc Digital input/output module DIGITAL MODULE INPUT / OUTPUT MODULE FATEK FBs-40XYT expansion module FBs-40XYT 24DI/16DO I/O unit FBS-40XYT FATEK FBS-40XYT FATEK FBs40XYT digital input output FBs-40XYT PLC right-side module FATEK FBs-40XYT part number FBs-40XYT automation I/O module FATEK FBs-40XYT industrial input output FBs-40XYT 24VDC input 16 transistor output FATEK FBs-40XYT control system module FBs-40XYT expansion I/O unit