PLC Chapter 2 MIDTERM (WIP)
What is the unit for measuring the speed of serial communication?
Baud rate
DC I/O modules are always sourcing and never sinking.
False
Only one chassis size is available for modular SLC 500 series processors: a 7-slot rack.
False
The PLC's Forced mode could never cause injuries.
False
In what type of PLC are the processor (CPU), power supply, and I/O modules in a single housing?
Fixed
What is serial communication?
One bit of information is transmitted at a time
Which of the following is best described as communication in only one direction? (Only one device sends and one receives.)
Simplex
PLC ports are typically rated for _________ amperage (current
high
A parity bit check is used to find transmission errors
True
PLCs are environmentally hardened: they can withstand dust, extreme temperatures, humidity, and electromagnetic noise
True
The power supply connects to the side of the chassis and provides power to the chassis backplane
True