Deck 15: Word and Array File Instructions

Question 1

Allen-Bradley uses a(n) ____________________ instruction for making file-to-file moves.

Answer 1

file copy (COP),file copy,COP

Question 2

Explain the file-to-file instruction.

Answer 2

This instruction moves data from one file to another. The data from the source file may be moved to the destination file one word at a time, or the entire contents of the file can be moved in one move, depending on the PLC.

Question 3

A MicroLogix 1000 shift register can address a maximum of 2048 bits.

Answer 3

False

Question 4

The ____________________ instruction is used to transfer data from a word into a file.

Question 5

Explain what happens to the unused bits of a file that are used by an Allen-Bradley shift instruction.

Question 6

Explain the function of the Unload Bit (UL) in the control instruction of an Allen-Bradley BSL three-word control element.

Question 7

Explain the major difference between a synchronous shift register and an asynchronous shift register.

Question 8

____________________, or registers as they are often referred to, are locations in memory that can be used to store different kinds of information.

Question 9

The ___________________ instruction shifts all bits to the left with each false-to-true transition.

Question 10

When programming the BSL instruction in the Logix5000 controller, you must create a unique control tag for each type of array instruction you program.

Question 11

When the bits in a register are shifted, the information shifted out is not lost.

Question 12

Information stored in a word may also be moved into a file, or the information stored in a file can be transferred into a word.

Question 13

A(n) ____________________ is a group of consecutive memory words used to store information.

Question 14

Typically, a word or register can store the status of inputs and outputsa and hold numerical values used for math functions.

Question 15

Explain the synchronous shift register.