blog2code

Instrumentation is called as a Heart of Automation. The answer of this, is in the definition of the Instrumentation. Instrumentation is the collective term used for measuring instruments that are used for indicating, measuring and recording physical quantities such as flow, temperature, level, distance, angle or pressure. To make a process automatic we first need to know, measure, or record the process variables. And without knowing or measuring the physical quantities or changes in it we can't control the process, That's why instrumentation is called  Heart of  the Automation.

SCAN TIME :-  Scan Time is nothing but the time taken by the processor to sense first input of the program and execute last output of the program. The unit of Scan Time is Bits/Sec.

SR. NO. AB PLC series I/O Range Communication Software Programing Software Emulator Software 1. Pico Series <= 32 I/o’s RSlinx gateway Picosoft NA   2. Micrologix (<= 512 I/o’s ) Micrologix 1000 (<= 32 I/o’s) Rslinx gateway RSlinx500 English Pro Emulator 500   Micrologix  1100 (<= 64  I/o’s) Rslinx gateway   RSlinx500 English Pro Emulator 500   Micrologix 1200 (<=128  I/o’s) Rslinx gateway RSlinx500 English Pro Emulator 500   Micrologix 1400 (<=256 I/o’s) Rslinx gateway RSlinx500 English Pro Emulator 500   Micrologix 1500 (<= 512 I/o’s) Rslinx gat...

Hardware / Block diagram of PLC. Above fig. shows the block diagram of PLC.