1785-L20B/C

PLC-5/20 PROCESSOR, 16K WORD SRAM MAXIMUM USER MEMORY; MAXIMUM TOTAL I/O: 512 ANY MIX OR 512 IN + 512 OUT (COMPLEMENT); CHANNELS: 1 DH+, 1 DH+/REMOTE I/O; MAXIMUM NUMBER OF I/O CHASSIS: 13 (TOTAL) 12 (REMOTE), SERIES C