FATEK FATEK PLC ANALOG INPUT/OUTPUT MODULE ANALOG INPUT / OUTPUT MODULE B1 SERIES B1 SERİSİ B1-L2A2D B1 L2A2D module L2A2D PLC module PLC B1-L2A2D Industrial automation PLC controller B1 spare part Automation unit PLC hardware Control system device Industrial control module B1 automation module PLC expansion unit