MET 382 Lab 1 Fall 09

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MET 382, Lab #1 page 1 of 6

MET 382

Laboratory Assignment #1

Fall 09

Working with Local I/O

Objectives:

In this assignment you will learn how to:

Create a new PLC program using Rockwell Softwares RSLogix 5000 PLC programming

software

Configure local I/O for a discrete AC input module and a discrete AC output module

Create alias tags for the local I/O that will be used in future lab assignments Download a PLC program

Manually test your alias tags using RSLogix5000s tag database

Enter a simple PLC program

Preparation:

It is assumed that your Instructor has discussed and demonstrated the key points outlined in the presentation

entitled Working with Local I/O. Refer to the power point presentation Working with Local I/O while

performing this lab assignment.

Phase 1:

Background:

In this phase you will create a new PLC program and then configure the local I/O for the ControlLogix PLCslocated at each dropline of the MFET conveyor system.

Proceed as follows:

1) If you have not already done so, create a shortcut to RSLogix 5000 and place the shortcut on your

computers desktop.

2) Start RSLogix 5000 by double clicking on the shortcut created in step 1.

3) Save your new PLC program into your lab group folder located on the G drive. Name the programlab1.ACD.

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4) As demonstrated by your Instructor and outlined in the presentation entitled Working with Local

I/O, configure local I/O for the AC input module (1756-IA16) which is located in slot 6 of each

dropline PLC. During the configuration process, configure the AC input module as follows:

Name the module AC_IN Enter the following description: AC inputs wired to dropline panel

Use the Input Data Comm format

Set Electronic keying to Compatible Module

Set the requested packet interval (RPI) rate to 500 ms

Enable each input to also produce data on change of state (COS)

Use the default Input Filter Times

5) As demonstrated by your Instructor and outlined in the presentation entitled Working with LocalI/O, configure local I/O for the AC output module (1756-OA16) which is located in slot 7 of each

dropline PLC. During the configuration process, configure the AC output module as follows:

Name the module AC_OUT

Enter the following description: AC outputs wired to dropline panel

Use the CST Timestamped Fuse Data Output Data Comm format

Set Electronic keying to Compatible Module

Set the requested packet interval (RPI) rate to 5 ms

Configure all of the outputs to turn OFF when the PLC is switched into the program mode

or if there is a fault

6) Save the PLC program.

Phase 2:

Background:

In this phase you will learn how to change a modules configuration after the module has been added to theI/O Configuration Folder. You will also create alias tags for the local I/O configured in phase 1.

Proceed as follows:

1) After a module has been placed in the I/O configuration folder and configured, the original configuration

can generally be modified as desired. Make the following configuration changes outlined below:

a) In phase 1, the AC output module was given the following name (see configuration details above):

AC_OUT

Change this name to AC_Outputs

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b) In phase 1, the AC input module was given the following name:

AC_IN

Change this name to AC_Inputs

2) Create alias tags for the field devices (pushbutton 0, pushbutton 1, etc.) shown in Table 1. While creating

each alias tag, also enter the descriptions shown in Table 1.

Table 1 Proposed Alias Names

Field Device Base Address Alias Name Description

Pushbutton 0 Local:6:I.Data.0 I_PB0 Pushbutton 0

Pushbutton 1 Local:6:I.Data.1 I_PB1 Pushbutton 1

Pushbutton 2 Local:6:I.Data.2 I_PB2_no Pushbutton 2 (N.O.)

Pushbutton 2 Local:6:I.Data.3 I_PB2_nc Pushbutton 2 (N.C.)Selector Switch 0 Local:6:I.Data.4 I_SS0_Pos_A Selector Switch 0 (POS A)

Selector Switch 0 Local:6:I.Data.5 I_SS0_Pos_B Selector Switch 0 (POS B)

Red Pilot light Local:7:O.Data.0 O_Red_PL Red pilot light

Amber Pilot light Local:7:O.Data.1 O_Amber_PL Amber pilot light

Blue Pilot light Local:7:O.Data.2 O_Blue_PL Blue pilot light

3) After you create the 9 alias tags shown in Table 1, save your program.

Phase 3:

Background:

In this phase you will download your program to a dropline PLC. As discussed in the presentation entitled

Working with Local I/O, PLC programs will be downloaded over Ethernet. Each dropline computer hasan Ethernet adaptor (NIC network interfaced card) and a ControlLogix Ethernet module (1756-ENBT) has

been installed in slot #4 of each dropline PLC.

For your reference, the PLCs in the MFET lab have the following TCP/IP addresses:

PLC: Address:

DL1 192.168.1.15

DL2 192.168.1.25

DL3 192.168.1.35

DL4 192.168.1.45

DL5 192.168.1.55

DL6 192.168.1.65

TrunkLine 192.168.1.75

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You will also use the tag database to test each of the alias tags which were created in phase 2. You willNOT write a PLC program in this phase, you will simply examine and manipulate the tag database as

outlined in the presentation Working with Local I/O.

Testing your alias tags will ensure the following:

That you have assigned the correct address to each field device (pushbutton, pilot light, etc.) The AC input and AC output modules are operating correctly

The wiring between the I/O modules and the field devices is OK

Before you can download a PLC program to a dropline PLC, you must go to the conveyor and log into thedropline computer at the dropline you wish to download to. For example, if you want to download a PLC

program to the PLC located at dropline 3, you must perform the download using the computer located at

dropline 3.

Proceed as follows:

Using RSLogix5000, download your PLC program to the PLC at your dropline (tip: Select Who Act ive

from the Communicat ions menu).

During the download process you will:

a) Go online with the PLC at your dropline.

b) Place the PLC in the Remote RUN mode.

CAUTION: Make sure you download to the correct PLC!

Always download to the PLC at your dropline. For example, if you are working at

dropline 5 you should only download to the PLC located at dropline 5.

Note: The keyswitch located on the Logix5555 controller (residing in slot #5)

must be in the REM (Remote) position!

At this point it is assumed that you have downloaded your program to the PLC and you are now online withthe PLC at your dropline. In addition, the Logix5555 controller should be in the remote RUN mode.

Now you will use the tag database to test each of the alias tags which were created in phase 2. You will

NOT write a PLC program in this phase, you will simply examine and manipulate the tag database asoutlined in the presentation Working with Local I/O.

Proceed as follows:

1) Test all6 of your input alias tags by activating the pushbutton (or selector switch) and then

monitor the tag in the tag database. Each input alias tag represents a bit. When the input is ON (i.e.,there is electrical continuity) the corresponding alias tag will be set to a 1. When the input is OFF

(i.e., there is NO electrical continuity) the corresponding alias tag will be reset to a 0.

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2) Test all3 of your output alias tags. Each output alias tag represents the output device (pilot light

in this example) that is wired to the corresponding output of the AC output module. Each output alias

tag represents a bit. You can turn an output ON by manually setting the alias tag (bit) to a 1.Resetting the alias tag to a 0 will turn OFF the corresponding output.

Tip: Use the Control + T feature to toggle output bits on and off

3) After you have tested all of your alias tags, the Instructor will ask you to demonstrate how to test

your input and output alias tags.

Phase 4:

Background:

In this phase you will learn how to use RSLogix5000 to enter a simple three rung PLC program. In this lab

assignment you will enter the program while working offline. After entering the program, you will re-download the program in order to test your program.

Proceed as follows:

1) Using RSLogix5000, return to the OFFLINE mode.

2) While working in the offline mode, enter the following 3-rung PLC program:

3) Verify your program in order to ensure there are no errors.

4) After you verify the program and it has no errors, download the program to your dropline PLC.

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5) Using RSLogix5000, place the PLC in the remote RUN mode.

6) Test your program.

o

The amber pilot light should turn on when you press (and hold in) pushbutton PB0.o The blue pilot light should turn on when you press (and hold in) pushbutton PB2.o The red pilot light should turn on when you switch selector switch 0 to position A (clockwise)

7) After you have tested your program, demonstrate your working program to your Instructor.

8) After your Instructor checks your work:

Place the PLC back into the remote PROGRAM mode.

Go offline.

Close your program and exit RSLogix5000.

Log off of your dropline computer.

You have completed lab #1.

Documents

MET 382 Lab 1 Fall 09