TimWilborne

I think my first question is being 10 minutes between interrupts, is there a reason it needs to be an STI as opposed to using a regular timer in the ladder program to do the task.

Happens to us all

Glad I could help!

Did you configure your station in RsEmulate? Click Open in RsEmulate and select the RSS file you want to emulate, assign a station number of 1. This will make your emulated PLC show up in RsLinx. Look around 3:30 of the following video

Then yes. Normally I would feed one side of the switch with 120VAC, take the other side of the switch to your input, then take the common for that input group to neutral.

Let's make sure your MicroLogix can handle AC. What's the part number of the PLC or module that you're hooking this to?

You are not executing the I/O map routine, or any of the ladders beyond Ladder 2. It is the only one executed by default. Add JSR instructions to execute routines 3, 4, 5, and 6.

Sounds like something else is writing to it. In addition to duplicate OTEs, it could be a MOV or a COP instruction writing to B3:0. Can you post your whole program? Also is there an HMI attached to it?

Passwords are not something we can discuss here. You will need to contact the original programmer or Allen Bradley.

There is no way to get around it and discussions about circumventing passwords are not allowed here. While the company may be out of business, you may find an old employee. Try LinkedIn.

You're right Ken, I was thinking of the 1400.

Seems like you have to have a specific firmware level to get Modbus TCP. When you get back to work, connect to the processor and note the firmware level for us. And welcome to the forum!

You can't program Micro 830 with RsLogix 5000 but you can download the software for free.

This is a major complaint I have about Connected Components software. In an attempt to dumb down the software they've tried to relate the "normally open" instruction to a set of normally open contacts and a "normally closed" instruction to a normally closed contact. They are as close to the same as a dog is to a cat and your question is a perfect example of the problems that happen when software writers make these associations. The short answer is there is nothing wrong with using a "normally open" instruction with a normally closed set of contact blocks. If you need a way to remember it is normally closed then note that in the description. While a little long, read this article for a detailed explanation. http://www.theautomationstore.com/rslogix-500-lesson-2-basic-xic-xio-and-ote-instructions-1/

I almost completely agree with you I love the 1769 bricks, but the major thing that keeps me from recommending it more is the lack of a way for beginners to get their feet wet in the software. Just like the free software for the Micrologix 1000 and 1100 leads people to the 1400, offering software the the 1769 bricks would introduce a good audience the the larger Compactlogix and Controllogix. They used to have a 90 day version but even it was offline only and I'm not seeing it now. Plus not giving the user the opportunity to get comfortable with the PLC kind of defeats the purpose.

Jeremy has guided in the right direction so I'll just address the Micrologix's embedded I/O since it will impact your selection due to your I/O count. You need 48 inputs and 32 outputs. Using 16 point I/O that would require 5 slots. The Micrologix 1100 is capable of 4 slots and the Micrologix 1400 is capable of 7 slots. So without using the embedded I/O the Micrologix 1400 would fit your application. Using the embedded I/O you could save yourself at least one input module. As far as using the embedded I/O, the pitfall of many brick controllers including 1100 is that it doesn't have removable terminal blocks for ease of replacement. However the 1400 which fits your application does have removable terminal blocks so changing the controller out later on would be easy.

Yes I've always gotten quick responses to support questions from them.

Can you explain the bugs you are speaking of so we can be aware of them?

Hi Sappleto We don't allow discussing password workarounds here. Your best option will be to try to work it out somehow with the other company.

Many USB to serial adapters can be used, but I wouldn't go as far as to say any. The Keyspan HS-19 is an excellent choice. We also have one for sale here. http://www.theautomationstore.com/industrial-usb-rs232-usb-serial-adapter-plc-programming/

The lowest cost software that you could program a SLC 500 with is 9324-RL0100ENE which list for $1,160. The big problem with this software is it doesn't allow online editing which is a huge hindrance in teaching yourself in my opinion. In fact I think it would make your training setup the equivalent of a Micrologix 1000 which you can pick up for $100-200. The lowest version I would recommend for the SLC 500 is 9324-RL0300PTE which list for $2,360. I don't think either of these options are good for starting out. We have a used Micrologix 1100 we can sell you for $300. You might even find one for less on eBay. We also have several prebuilt trainers there that you may be interested in. http://www.theautomationstore.com/allen-bradley-1763-l16bbb-micrologix-1100-plc-series-a-used/

Yes but they both use the same RsLogix 500 software so what you learn on the Micrologix 1100 is transferable to the SLC 500

The software for the SLC 500 isn't free. You would be better to find a Micrologix 1100 to learn on since it uses the free version of the software. You could also use the free software with the emulator to get your feet wet. Here is a video about downloading and installing RsLogix 500, RsLinx, Emulate 500 for free at https://youtu.be/12sNv4Ak9iI

Yes I've always though having the red background was enough also. There is no way I know of to turn off the blinking. The only other thought I have would be to use the GETALARMTAG function to create your own ticker but that is a lot of work for when you have something that is almost what you want. I would call Red Lion and at least get it put on the list. I might be easy enough that is shows up in a few builds.

I would vote for the Micrologix 1100. You can teach Ethernet, have the advantages of online editing, can add expansion modules for analog, temperature, etc, and the software is free. Here is our basic Micrologix 1100 trainer. http://www.theautomationstore.com/allen-bradley-micrologix-1100-ethernet-plc-trainer/ Here is one that includes analog http://www.theautomationstore.com/allen-bradley-micrologix-1100-ethernet-plus-analog-plc-trainer/ Ron is right, the Controllogix would be better but that blows the budget of most schools. We evaluated the Micrologix 800 and it was just too different than everything else, here is a video I did while downloading and evaluating it. Also along with the RsLogix 500 software being free for the Micrologix 1100, you can also download Emulate which allows students to test their code. It is not a substitute for a real PLC but helps with homework exercises. Here is how to download, install, and run them.