Lecture 2 From Page 87

Question 1

Printers are used to provide hard-copy printouts of the processor’s memory in

Answer 1

ladder program format

Question 2

A printout can show programs of any length and analyze

Answer 2

the complete program

Question 3

The program in the PLC is entered directly from the keyboard or

Answer 3

downloaded from the computer hard drive or thumb drive

Question 4

Some CPUs support the use of a memory cartridge that provides portable EEPROM storage

Answer 4

for the user program.

Question 5

A Human Machine Interface (HMI) can be connected to communicate with a PLC and to replace pushbuttons, selector switches,

Answer 5

pilot lights, thumbwheels, and other operator control panel devices

Question 6

HMIs provide a means of controlling, monitoring, managing and/ or

Answer 6

visualizing device processes

Question 7

Tag database variables are programmed to interact with the graphic screen objects and communicate with

Answer 7

the PLC through the I/O server

Question 8

HMI operator panels typically contain screens. That can communicate directly with the PLC to read or

Answer 8

write memory locations

Question 9

HMI environmental certification refers to the type of electrical enclosure used to protect their contents from

Answer 9

troublesome operating conditions

Question 10

HMI alarms are messages which indicate that

Answer 10

a fault condition is present.