ALLEN BRADLEY 1747-L511 SER.B SLC 5/01 PLC PROCESSOR SLC 500 SERIES CONTROLLER 5-24 VDC 1K 90 MA 0 MA 7880 DIGITIAL I/O MAX RSLOGIX 500 DH-485 SLAVE EEPROM 8 MS/K 3/30 LOCAL CHASSIS / MAX SLOTS