PIC16F1847 microcontroller-based programmable logic controller: hardware and basic concepts

Programmable logic controllers (PLCs) have been used extensively and are offered in terms of functions, program memories, and the number of inputs/outputs (I/Os), ranging from a few to thousands. With a focus on how to design and implement a PLC, this volume explains hardware and associated basic concepts of PLC. Authors have used PIC16F1847 microcontroller with: 8192 words of Flash program memory, 1024 bytes of SRAM data memory, 256 bytes of EEPROM data memory, the maximum operating speed of 32 MHz, 16-level deep hardware stack, an enhanced instruction set consisting of 49 single-word instructions. Flowcharts are provided to help the understanding of macros (instructions). Aimed at researchers and graduate students in electrical engineering, power electronics, robotics and automation, sensors, this book: Explains how to design and use a PIC16F1847 microcontroller-based PLC. Provides easy to use software structures written by using the PIC Assembly programming language. Describes a PLC from a designer's perspective. Explains the basic hardware and basic software structures of the PIC16F1847 based PLC. Focuses on concepts like Contact and Relay Based Macros, Flip-Flop Macros, Timer Macros, Counter Macros and Comparison Macros.

<P>Chapter 1 -- Hardware of the PIC16F1847-Based PLC </P><P>Chapter 2 -- Basic Software <BR> 2.1. Definition and Allocation of Variables <BR> 2.2. Contents of the File PICPLC-PIC16F1847-memory.inc <BR> 2.3. Contents of the File PICPLC-PIC16F1847-main.asm <BR> 2.4. Contents of the File PICPLC-PIC16F1847-user.inc <BR> 2.5. Contents of the File PICPLC-PIC16F1847-subr.inc <BR> 2.6. Contents of the File PICPLC-PIC16F1847-macros.inc <BR> 2.7. Example Programs <BR> 2.8. Reference <BR> <BR>Chapter 3 -- Contact and Relay Based Macros <BR> 3.1. Macro "ld" (load) <BR> 3.2. Macro "ld-not" (load-not) <BR> 3.3. Macro "not" <BR> 3.4. Macro "or" <BR> 3.5. Macro "or-not" <BR> 3.6. Macro "nor" <BR> 3.7. Macro "and" <BR> 3.8. Macro "and -not" <BR> 3.9. Macro "nand" <BR> 3.10. Macro "xor" <BR> 3.11. Macro "xor-not" <BR> 3.12. Macro "xnor" <BR> 3.13. Macro "out" <BR> 3.14. Macro "out-not" <BR> 3.15. Macro "mid-out" (Midline Output) <BR> 3.16. Macro "mid-out-not" (Inverted Midline Output) <BR> 3.17. Macro "in-out" <BR> 3.18. Macro "inv-out" <BR> 3.19. Macro "-set" <BR> 3.20. Macro "-reset" <BR> 3.21. Macro "SR" (Set-Reset) <BR> 3.22. Macro "RS" (Reset-Set) <BR> 3.23. Macro "r-edge" (rising edge detecto…