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MicroLogix 1200 Controllers
Product Design
The MicroLogix 1200 controller and expansion I/O modules provide a modular, rackless control system designed for ease of installation and maintenance. Each MicroLogix 1200 controller includes a processor, built-in I/O, and power supply. Expansion I/O modules install to the right of the controller. Cables built into the I/O modules provide connection to the adjacent I/O module or controller. Controllers and I/O modules can be mounted either on a panel or on a DIN-rail. I/O on both controller and expansion I/O modules have finger-safe terminal blocks to meet global safety standards. The 40-I/O controllers have removable terminal blocks to facilitate ease of wiring and maintenance.
- Four latching or pulse-catch inputs—Latching inputs let the controller capture and hold very brief (microsecond) signals for input processing.
- 20k Hz high-speed counter—The built-in independent high-speed counter uses 32-bit integers for extended range, features 8 modes of operation, and supports direct control of outputs independent of program scan.
- Programmable Limit Switch Function—The Programmable Limit Switch function allows you to configure the high-speed counter to operate as a programmable limit switch or rotary cam switch.
- Trim potentiometers—Two built-in 3/4-turn analog trim potentiometers with a digital output (range from 0 to 250) allow quick and easy adjustments of timers, counters, setpoints, and more.
- Program data security—Data file download protection lets a program be reloaded into the controller without overwriting protected data.
- Floating Point Data Files—You can create data files that can contain up to 256 IEEE-754 floating point values.
- Memory, real-time clock, or memory/real-time clock modules—Memory backup provides protection and transportability for programs and data. The real-time clock lets you easily solve time/date scheduling applications, and can be synchronized with an external source via a program instruction.
- Four interrupt inputs—Interrupt inputs let the controller scan a specific program file (subroutine) when an input condition is detected from a sensor or field device.
Operator Interfaces
Many Allen-Bradley operator interface products can be used with MicroLogix 1200 controllers. The PanelView 300 Micro operator interface is a small, low cost, easy-to-use operator interface that is designed for use with the MicroLogix 1200 controller.