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Compactlogix i o addressing

When it comes to industrial automation, Studio is one of the most widely used software packages in the world. In my career, I specialize in helping people become confident PLC programmers so they can advance their career or just get better at their job.

From there we have a few options for project types, but we want to choose Logix in this case since we are going to be creating a Logix Designer PLC program. In this tutorial, we will use the Studio Logix Emulate Controller. This controller emulates a physical controller by utilizing a portion of memory on your PC to act like a PLC controller. At this point we can choose the revision number of the firmware we will use in the controller.

I have Logix Designer version 30 on this computer so we will stick with the default revision, You also choose the type of chassis the controller will be in. We will leave at the default 4-slot chassis and leave the controller in the default slot position, slot 0.

Alright, now we have successfully created a new Logix Designer project. This what you should see when you first get into the software. Logix Designer makes this really easy to do. We can use filters to narrow our options even further. So we will choose analog. So change the filter from Analog to Digital. Alright, now we are making progress!

For now we are just going to create one simple rung. First, open up the default ladder logic routine that is created when you create a new project.

Next we will use the instructions tab above the logic area to choose to Ladder Logic instructions. Our pump is getting controlled by the discrete output module: the OB32 module. The output energize instruction, or OTE. And will use channel 5 from the analog input module. Since our analog input module is in slot 1, we will use LocalI and expand that. So the correct address, in this case, ends up being LocalI. And we want to compare that analog input value to So, in source B of the GRT instruction we will put the number Next, we will address the OTE instruction.

Remember the discrete output module is in slot 2, so we will be browsing for Local Which becomes LocalO. And then we need to choose which output point will be used from the 32 point module. So that becomes LocalO. And that completes our ladder logic example. Now, we will do one more thing to make sure our program runs like we want it and that is to make sure the analog input is scaled properly. As we earlier we want the analog input to giving us a percentage of the tank fullness level.There are a number of addressing schemes used by PLC manufacturers.

An XIC it looks like a normally open contact —] [— is an instruction. A timer is an instruction. A few of the most common instructions are described below. It can be an input, output or internal coil, among others. Just like in an electrical ladder diagram, a rung has some type of output that is turned on or turned off by the preceding entities in the rung. The first rung in a ladder program is always The internal coil has no connection to the outside world.

It does not connect to an output card. Internal coils are used to store information.

How to set a CompactLogix Ethernet address using BOOTP

There are many other words in other files that have bits you can use as internal coils, but we are going to stick with the B3 file for our application. Note that, unlike the Output and Input files, you have to use the file number in the address. In this case, the default file number is 3. TIMER A timer is a programmable instruction that lets you turn on or turn off bits after a preset time. T4 :0 means that it references an internal Timer file T4: 0 means that it uses the first timer in the table.

The address T simply refers to the timer. Each timer has bits that turn on after the timing function is complete. There are different types of counters available in the RSLogix, but the CTU counter up instruction covers everything we will talk about here.

compactlogix i o addressing

C5 :0 means that it references an internal Counter file C5: 0 means that it uses the first counter in the table. The address C simply refers to the counter. Each counter has bits that turn on after the counting function is complete.Latest Projects Education. I - Fundamentals Vol. II - Instrumentation Vol. III - Measurement Vol.

IV - Control Vol. V - Reference Worksheets. Home Forums Hardware Motion Control. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.

Search Forums New Posts. Thread Starter Randy DeMars. My company is about to build its first machines using the Allen Bradley ControlLogix processor.

This makes sense, and I am suspect that it is similar to what the most companies are doing. I am sure that some standard will emerge for this, if it has not already. I would appreciate any information that the list can provide. Thanks Randy DeMars. Scroll to continue with content. Wally Temple. This provides for a six digit wire number and terminal label for our use.

I think something similar would work for analog. For chassis numbers we are using the controlnet address of the primary network card in that chassis.

A simple numbering scheme would work as well. That is the plan, for now. This is also our first system using the platform. More later, if things change. George Robertson. Anyone interested in the address can find out from the alias tables in the software.

Obviously, it would be nice if the programmers would use symbolic names similar to the loop tagname, which would also help in troubleshooting later. Hope that helps! Robertson, P.

CompactLogix slot numbers

Manager of Engineering Saulsbury Engineering and Construction. Trevor Ousey. Hence we will end up with a number as which will be rack 1, slot 9 and bit The relationship to the PLC logic will require a drawing cross reference, or you could tie this into the alias tagname.

Regards, Trevor Ousey. Jansen, Joe. Actually, the wire numbering scheme that I have seen to be most prevelant during 7 years of robotics integration work is a 5 digit wire number, where the first 2 digits are the last 2 numbers of the electrical print page numberthe second 2 digits are the line number on the page, and the optional 5th digit is an A, B, C, etc. Tags in the PLC then refer to device number.

Paul Tolsma.The format of the string is:. Some file types are fixed, for example there can only be one file each for Inputs, Outputs and Status Bits. Other files are more flexible, for example there can be multiple Integer files. The File Number is optional and, if included, sets which file to access. If the File Number is not included the file number is implied by the File Type.

All PLCs have a predefined set of files as follows:. The Word Offset field is optional, and if used, defines which word of a multi-word element to access. These models are configured using ladder logic and store data in files. These models implement the IEC standard and each data item is assigned a unique variable name. If used, the File Number must be 0. The Bit Offset sets the bit number If used, the File Number must be 1. If used, the File Number must be 2.

The Element Number sets the status word.

How to set a CompactLogix Ethernet address through its USB Port

The File Number sets which bit file to use 3, If not used, the File Number is 3. The Element Number sets the word. The File Number sets which timer file to use 4, If not used, the File Number is 4. The Element Number sets the timer index. The Word Offset sets the word offset within the timer The File Number sets which counter file to use 5, If not used, the File Number is 5. The Element Number sets the counter index.

The Word Offset sets the word offset within the counter The File Number sets which control file to use 6, If not used, the File Number is 6. The Element Number sets the control index. The Word Offset sets the word offset within the control The File Number sets which integer file to use 7, If not used, the File Number is 7. The File Number sets which float file to use Other protocols such as ControlNet can be used.

This procedure can still be followed. Just modify the catalog numbers and addresses accordingly. The procedure for other chassis will be very similar.

compactlogix i o addressing

We will walk through gathering the information step by step. All of the catalog numbers of the modules we are using have the catalog number labeled on them. This should not be an issue. When powered up, the IP address will scroll across the alphanumeric display.

You will also need the firmware revision of this module. Another method is to enter the IP address into your web browser if you are on the same network.

The status page will show the product revision. As you can see, the Ethernet module is in Slot 3. Secondly, we need information about the AENT module. The IP address should be written on the sticker on the module. To get the firmware revision, just enter the modules IP Address into your web browser. Consider these to be Slot 0, Slot 1, and Slot 2 respectively. This procedure is very similar for Controlnet… Just be sure you know all of the information about your modules that we will need.

First, we will add the ENBT to the backplane. Just select the correct catalog number of your local network adapter. Next, type ENBT to narrow your search. Choose the ENBT, and create a connection to this module.

Finally, populate the name, slot number, revision, and IP address of the module. Be sure to use your own settings for your own module. Remember, this is for example only. Now, press OK. In your case, you may be connecting to another ControlLogix, Drive, Panelview, or a number of other devices. Just be sure to add the target module that you are using. Next populate the fields as show modifying the fields for the module that you are actually using.

Very important!!! Whatever you name this communication adapter is what all the tag names will start with for all of the modules in the chassis. The name of the individual modules does not matter as far as tag names are concerned. Obviously, if your field device does not have additional modules, such as a drive or panelview, you can skip this step. Again, this is just an example.

Be sure to add the modules according to the setup that you have. Now, Studio has created tags for the modules on the flexbus.To learn how to, see the below articles:. The first time you run the BOOTP utility you will receive a popup warning that the utility needs your network settings specified.

To get it to request an IP address quicker, cycle power to the processor. This means, once you cycle power to the processor it will again ask for an address via BOOTP, and will no longer have the address you gave it above. Shawn Tierney Automation Instructor and Blogger.

Enjoy the benefits of membership! Click here to scroll down to the comment link Have a news tip? Share it with us here. Very helpfull and good explication!! Many Thanks!! Have a great week, Shawn Tierney Find my articles or comments helpful? Check out my courses here. Have a news tip? Save my name, email, and website in this browser for the next time I comment. The Automation Blog. Siemens vs. Coming: Connected Components Workbench R Author Recent Posts.

Shawn Tierney. Shawn began programming as a pre-teen in the early 80's, and later earned a degree in Electronics. He worked for 25 years as Automation Specialist, passionately sharing tech tips via his newsletter, then his BBS, before launching his first website in In he relaunched his website as TheAutomationBlog. Forum Comments:. Click HERE to post a forum comment or question. Setting up a ETAP. Please enter your blog comment!

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comments so far

Darr Posted on 10:12 pm - Oct 2, 2012

Bemerkenswert, es ist die lustigen Informationen