| |
|
|
|
| |
PLCs (Programmable Logic Controllers) are the control hubs
for a wide variety of automated systems and processes. They
use a wide variety of inputs and outputs and network capability.
Programmable logic controllers (PLCs) are the control hubs
for a wide variety of automated systems and processes. Programmable
logic controllers are used extensively in diverse industrial
applications ranging from machining to automated assembly.
They were designed to replace the necessary sequential relay
circuits for machine control.
Programmable logic controllers function by interpreting data
coming through their inputs and depending upon their state,
turning on/off their outputs. They are programmable via software
interfaced via standard computer interfaces and proprietary
languages and network options. |
|
| PLCs
function using relay ladder logic programming. Unlike traditional
programming in which command functions are read, interpreted,
and performed in sequential order, ladder logic allows programmable
logic controllers to perform any command within the loop at
any time without executing previous commands. This allows
PLCs to carry on their three basic functions: Control, Input,
and Output - as needed. In addition to controlling output
functions, programmable logic controllers are good for compiling
data from many sources and uploading this data into a computer
network. PLCs are generally more durable, and less expensive,
than computer systems and as a result can be placed in remote
or rugged industrial locations, and perform at a high level
for many years. |
|
|
| |
|
|
