controlador de mensajeria entre plc micrologix y variador power flex 4

of 16

MicroLogix 1100 communications via ModBus to PowerFlex 4/40 drive and EtherNet to

PanelView PlusV1.2

This document will describe in detail how to configure and program the MicroLogix 1100 for ModBus communications to

a PowerFlex 4/40 drive. This document will also illustrate communications via EtherNet to a PanelView Plus for control.

Creation Date:11/30/2005

Because of the variety of uses for this information, the user of and those responsible for applying this information must satisfy themselves as to the acceptability of each application and use of the program. In no event will Rockwell Automation be responsible or liable for indirect or consequential damages resulting from the use or application of this information.

The illustrations, charts and examples shown in this application note are intended solely to illustrate the principles of programmable controllers and some of the methods used to apply them. Particularly because of the many variables and requirements associated with any particular installation, Rockwell Automation cannot assume responsibility or liability for actual use based upon the illustrations used and applications.

Rockwell Automation assumes no patent liability with respect to use of information, circuits, equipment, or software described in this text.

Reproductions of the contents of this application note, in whole or in part, without the express written consent of Rockwell Automation are prohibited.

Software and Firmware UsedAll examples shown were developed using RSLogix 500 v7.0 and RSView Studio v4.0

Document Purpose This document is not a manual or training material, but an Application Note, which could be useful in helping a Rockwell Automation customer with configuring and programming communications via ModBus to a PowerFlex 4/40 drive and via Ethernet to a PanelView Plus.

Intended AudienceThis document is to be used by Rockwell Automation employees and customers supporting and selling the MicroLogix 1100, PowerFlex 4/40 and/or PanelView Plus.

Users are expected to have a through understanding and programming experience with RSLogix 500 and RSView Studio. This document is not intended for beginning programmers, many assumptions of knowledge and how to program are made within this document.

of 16


PanelView PlusV1.2

System Layout

9300-RADES

Ethernet

ModBusRS485

1763-NC01

Ethernet

Connect pin 4 & 5 of RJ45 to Pin 4 & 5 of 1763-NC01

Locator Pin 1

Pin 4

Pin 5

FRONT

NOTE: Multi-Drop or Daisy Chaining of devices is permitted. Proper installation and termination of multi-drop network is required. See specific product documentation for proper installation.

of 16


PanelView PlusV1.2

Programming the MicroLogix 1100

NOTE: The RSLogix 500 v7.0 project can be downloaded from the Rockwell Automation Knowledge database and used as is or edited to fit your exact application needs.

1. Create a new RSLogix 500 application for a MicroLogix 1100.

2. Configure Channel 0 communications for ModBus as shown below.

IMPORTANT NOTE(s):

o The Baud rate and parity of the MicroLogix 1100 must match the Modbus device.

o Use of the 1763-CBL-NC01 device on Channel 0 of the MicroLogix 1100 automatically converts from RS232 to RS485.

o When making your Protocol Control selection under Control line you must be sure to properly select “ NO Handshaking (485 Network)” when using the 1761-CBL-NC01 otherwise you may encounter issues such as MSG instructions generating error codes of 37H.

of 16


PanelView PlusV1.2

of 16


PanelView PlusV1.2

3. Configure Channel 1 (EtherNet) communications as shown below.

NOTE: If using a MicroLogix 1100 out of the box you must download the program via the RS232 cable (1761-CBL-PM02) or using the BOOTP utility first configure the MicroLogix 1100 for the above IP address in order to download via EtherNet.

of 16


PanelView PlusV1.2

4. Enter the following rungs for Program File : LAD 2 - Main_Prog

5. Create the following subroutine LAD filesa. LAD 3 – LCDb. LAD 4 – MODBUSc. LAD 5 – PF4_CNTRL

6. Enter the following ladder logic for LAD 3 – LCD. This subroutine will place onto the LCD display of the MicroLogix 1100 the actual output frequency of the PowerFlex drive.

of 16


PanelView PlusV1.2

7. Enter the following ladder logic for LAD 4 – MODBUS. This subroutine will perform the ModBus messaging to and from the PowerFlex drive.

of 16


PanelView PlusV1.2

8. Configure each of the MSG instructions as shown below. Remember for PowerFlex 4/40 drives you must add a value of “ 1 “ to the ModBus register (MB Data Address) that is listed in the PowerFlex manual.

MSG Command Word

MSG Speed Reference

of 16


PanelView PlusV1.2

MSG Logic Status

MSG Feedback (Output Frequency)

of 16


PanelView PlusV1.2

MSG Drive Faults

9. Enter the following ladder logic for LAD 5 – PF4_CNTRL. This ladder links objects on the PanelView Plus to the ladder logic for control of the PowerFlex drive.

of 16


PanelView PlusV1.2

That completes the MicroLogix programming.

Configuring the PanelView Plus EtherNet address.

1. Using the PanelView Terminal configure your PanelView Plus for the following IP Address and sub-net mask.

IP ADDRESS: 192.168.1.5SUB-NET MASK: 255.255.255.0

of 16


PanelView PlusV1.2

2. Programming the PanelView Plus

NOTE: The following is a good example of a typical control screen for a drive. There are many objects contained in this screen. We will highlight the creation of just a few. The RSView Studio application back-up file can be downloaded from the Rockwell Automation Knowledge database and used as is or edited to fit your exact application needs.

1. Create a new PanelView Plus application For this example a PanelView Plus 700 will be used.

2. Configure RSLinx Enterprise for communications to the MicroLogix 1100. If you have the MicroLogix 1100 connect it to the Ethernet switch along with your computer, this will allow you to browse directly to the controller. If you do not have the controller connected to your computer then you will need to manually add the MicroLogix 1100.

3. Locate the RSLinx Enterprise branch on your project tree and double-click on the “Communications Setup”.

4. Under shortcuts click “Add” and enter the shortcut name “Micro1”

of 16


PanelView PlusV1.2

5. Click on “Ethernet,Ethernet” under the local tab. If connected and properly configured the MicroLogix 1100 will appear. Again if you do not have the controller you will need to manually add the device. This can be done by Right-Clicking on “Ethernet,Ethernet”.

6. Now click “Copy” to copy this configuration to the “Target” tab. The “Target” configuration is what the PanelView Plus will use for communications when the project is downloaded to the device.

7. Click “OK” and accept the RSLinx Enterprise configuration changes.

8. Now create a new display screen

9. Add a “Close Screen” button. This will close the running application and allow you to return to the terminal configuration screen. Normally this button may be hidden behind a graphic or placed on a maintenance screen so only authorized users can actually close the running application.

of 16


PanelView PlusV1.2

10. Now add a momentary “Start” button to allow for starting the PowerFlex Drive.

11. Configure this button State 0 caption to read “Start” and change the back color to green.

12. Click on the connections tab and enter the following path to the MicroLogix 1100.

(Note: In the CPR9 release of RSView, browsing directly to the MicroLogix 1100 for addresses will be available)

The Value,Tag/Expression = {::[micro1]b23:0/0}

13. Add additional Momentary Push Buttons for STOP, JOG, FORWARD, REVERSE using the Connections paths shown below.

a. STOP = {::[micro1]b23:0/1}b. FORWARD = {::[micro1]b23:0/3}c. REVERSE = {::[micro1]b23:0/2}d. JOG = {::[micro1]b23:0/4}

of 16


PanelView PlusV1.2

14. Add a Trend object to trend the output frequency of the PowerFlex drive as shown below.

15. Double-Click on the object and open the connections tab. Enter the following path for the PowerFlex output frequency. {::[micro1}N12:3}

16. There are several ways to show drive faults. Here is just one possible way. Create a Text Object and enter the text “Communications Loss”.

17. Now right-click on the Text Object and select visibility as shown below.

of 16


PanelView PlusV1.2

18. Enter the path to the MicroLogix 1100 and the Data Table address of the MicroLogix that contains the Drives Fault code. Include the fault code number for a “Communications Loss” fault in the PowerFlex Drive as shown below.

Additional Text Objects can be added and placed directly one on top of the other for each PowerFlex fault you wish to display. Only when a fault is present in the drive will the Text Object actually be displayed.

In the RSView Studio application include on the Rockwell Automation Knowledge Database other areas of the screen also show some techniques used to build advanced screens.

Examine how the Commanded Speed is being displayed and how the Increase and Decrease buttons are connected back to the speed control of the PowerFlex drive.

Examine the LEDs and Display of the PowerFlex drive. Each LED as well as the Display of the PowerFlex has been over-laid with objects to exactly imitate how the real PowerFlex display will look when viewed in the mounting enclosure/panel.

controlador de mensajeria entre plc micrologix y variador power flex 4

Documents

application note

modbus communications

rockwell automation

rockwell automation

ethernet communications

programming communications

project document page

modbus device