Automation & Robotics

ROBO$-242$ PLC$/$Pneumatic Interfacing

Lab $7$: Allen$-$Bradley Math and Data Handling Program

Objective: To explore the operation of Math and Data Handling instructions.

Upon successful completion of this lab, the learner will be able to:

Use the MOV instruction to place integer data into data memory

Program Math & Compare functions on the AB PLC

Procedure:

In this lab:

Data $A$ is the last $2$ digits of the Student number of the oldest group member.

Data $B$ is the last $2$ digits of the Student number of the youngest group member.

Write a program to accomplish the following tasks:

When the SW$3$ is turned ON:

a$.$ Place Data A into integer word $0($N$7$:$0).$

b$.$ Place Data B into integer word $1.$

When the SW$1$ is OFF:

a$.$ Press PB$1$ to place sum of Data A & Data B into integer word $2.$

b$.$ Press PB$2$ to place result of Data A $-$ Data B into integer word $3.$

When SW$1$ is ON:

a$.$ Press PB$1$ to place quotient of the larger of the Data values divided by the smaller into integer word $4.$

b$.$ Press PB$2$ to place product of Data A and Data B into integer word $5.$

Use the data table for Data File S$2$ to find the actual quotient and remainder results from step $3($a$)$ above.

Use the data table for Data File N$7$ to change the values in integer words $0$ and $1$ directly. Replace your larger value with $905,$ and your smaller value with $416,$ and verify correct operation of parts $2$ and $3.$ Observe the CPU after the MUL instruction is executed. Explain.

For step $3($a$),$ program will automatically divide larger by smaller Data value. Division must work even if both Data values are the same.

Use Fill File $($FLL$)$ instruction to load zero values to all N$7$ words that were used in your program. Activate it with SW$2.$

Evaluation:

Minimum: Demonstrate functions from items $1$ to $4$

Standard: Demonstrate functions from item $5$

Expert: Demonstrate functions from items $6$ and $7$

Ensure that your participation is marked on the Lab Attendance form.