Programmable Logic Controllers - CEU
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1
Relay ladder logic utilizes basic relay wiring symbols to create the logic to control a machine or process.
2
In a remote or distributed I/O networks, the PLC acts as the ____________ to the remotely-located I/O, via a communication adapter module. 
3
The pictured symbol is commonly used in ladder logic.  What does the symbol represent?
4
PLCs can be programmed in a variety or combination of programming languages in accordance with the ____________ standard.
5
This PLC component is connected to the outside world; send signals to solenoids, lights, etc. 
6
The primary reason for designing PLC’s was eliminating the large cost of replacing complicated relay-based machine control systems. 
7
PLC scan time is defined as the time it takes the PLCS to __________.
8
PLCs come in two basic forms:  Brick I/O and Modular I/O.
9
An alarm horn is a(n )____________ device to the PLC.          
10
A PLC works by __________.