MicroLogix 1500 System Overview
A basic MicroLogix 1500 system consists of a base unit that provides 24 or 28 built-in basic I/ O, a built-in ac or dc power supply, and a processor module that slides into the base unit. You can supplement the I/ O built into the base unit with up to sixteen digital and / or analog input and output 1769 Compact I/ O modules (depending on current draw and power dissipation) . Add an optional memory and / or real-time clock module or an optional Data Access Tool ... >>