PLC Programming Practice-ALLEN BRADLEY PLC

AB PLC series

Pico PLC
Bulletin 1760 Pico Programmable Logic Controllers and PicoGFX Controllers are discontinued and no longer available for sale. AB recommends these replacement products by Micro Series PLC.
Micro800 Control Systems
Micro810 Controllers
Micro810 Controllers
These controllers support 12 I/O points with 4 high current relay outputs (8A) for  smart relay applications.
Micro820 Controllers
Micro820 Controllers
These controllers support up to 36 I/O points with many embedded features such as Ethernet, micro SD slot for recipe and data log, and analog I/O.
Micro830 Controllers
Micro830 Controllers
These controllers support up to  88  I/O  points with high-performance I/O,  interrupts, and PTO motion.
Micro850 Controllers
Micro850 Controllers
These  controllers support up to 132 I/O points with high-performance I/O,interrupts, and PTO motion plus embedded Ethernet and 2085 expansion I/O.
C. MicroLogix Control Systems
1. MicroLogix 1000 Controllers: Discontinued and no longer available for sale
2. MicroLogix 1100 Controllers: The built-in LCD panel shows controller status, I/O  status, and simple operator messages. With 2 analog inputs, 10 digital inputs and 6  digital versions. You can expand the I/O count using rackless I/O modules .
3. MicroLogix 1400 Controllers:
MicroLogix 1400 Controllers
Controllers without embedded analog I/O points provide 32 digital I/O points, while analog versions offer 32 digital I/O points and 6  analog I/O points. You can expand all versions with up to seven 1762 expansion I/O modules.
4. MicroLogix 1500 Controllers: Controller Systems will be discontinued and no longer available for sale outputs, the MicroLogix 1100 controller can handle a wide variety of tasks.
5. MicroLogix 1200 Controllers: The controller is available in 24-point and 40-point
D. ControlLogix Control Systems
The ControlLogix family was introduced in 1997. This platform was racked-based having much faster scan times (speed) and memory than the PLC-5 or SLC products. Communication modules supported Ethernet, DeviceNet, DH485, and ControlNet.
Servo motor control cards using SERCOS fiber-optics provided competitiveness in the coordinated system servo market.
E. CompactLogix Control Systems
The CompactLogix family was released in 2008 as a lower-cost solution to ControlLogix for competitive reasons.
And like the MicroLogix, the products do not use a rack-based solution but instead, use add-on modules to the ends of the power supply or CPU modules.
1. 1769 CompactLogix 5370 Controllers
Ideal for small, to mid-size applications that require low axis motion and I/O point counts
2. 5069 CompactLogix 5380 Controllers
Ideal for small to midsize applications that require low axis motion and  I/O point counts
3. 1768 CompactLogix Controllers
Let you control distributed I/O via EtherNet/IP, ControlNet, or DeviceNet
4. 1769 CompactLogix L23x and L3x Controllers
Let you control distributed I/O via EtherNet/IP, ControlNet, or DeviceNet
Data types

Data Type Abbreviation Memory bits Range
Boolean BOOL 1 0-1
Short Integer SINT 8 -128 to 127
Integer INT 16 -32,768 to 32,767
Double Integer DINT 32 -2,147,483,648 to


Real Number REAL 32 /-3.402823E38 to /-


Allen bradley PLC wiring configuration

Allen bradley PLC wiring configuration

PLC and their programming software

PLC and their programming software

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