TimWilborne

Your Ethernet module should be scrolling the IP address (either the second from the right or third from the right module).

Thanks for letting us know you got it working Alan.

Hi Alan.  You need to use a ONS instruction so that your add instruction executes only once instead of each time the rung is scanned.  I talk about it more in this video. https://www.youtube.com/watch?v=eQF-HGxXzAc

You need to install version 15 in addition to version 20.  You can have multiple versions installed.

I may configure the IP address of 20-30 PLCs a week.  The PLC Tools SIM-IPE is the fastest and easiest way to configure an IP address.  Plus I can store various configurations in it for quick assess where I use the same IP configuration on multiple systems such as our PLC trainers.  Here is a link to it. https://www.theautomationstore.com/plc-tools-sim-ipe-ethernet-ip-address-explorer-dhcp-and-bootp-server/

Yes, for example if you have the PLC Tools SIM-IPE IP configuration at 192.168.1.1 with a subnet of 255.255.255.0 then it could still discover an Ethernet device on the network at 10.10.10.1.  In the video I don't think I had even configured the IP address of the SIM-IPE

Here's a video I did on the PLC Tools SIM-IPE doing exactly what you are asking for.  It will give you the IP address, MAC address, model number, firmware, and serial number of most AB PLCs and Ethernet/IP devices. https://www.theautomationstore.com/how-to-discover-ethernet-devices-on-an-unknown-network-using-plc-tools-sim-ipe-ip-explorer/

I built the control panel back in 2009.  I did the original install but never went back to do any work on it.   We build a lot of systems for companies that claim to do it all "in house".  We usually stay quiet about them but I figured 10 years was long enough. What is funny is when we get a call about one of them because the "builder" won't support it anymore and they don't have programs or drawings.  Yes we might be able to figure out how it works for a fee 

Wow, that must have been the mightiest control system ever built.  By the way, did it happen to to be sitting in front of two 5000 gallon tanks with a filter press to the right of it and a few ROs to the left as you were walking it?   

At least in the times I've seen it, it was due to poor grounds.  They are really susceptible to grounding issues.  Think it comes up as error 6H but I'm not near a PC.

The Micrologix has an optional memory module that's you can save the program to but it is not required. If you don't have a memory module installed it will retain its program during a power cycle.

Check out the AdvancedHMI.  The software is free plus they offer some high quality industrial PCs. https://www.advancedhmi.com/

With your Studio 5000 license, you have access too all previous versions of Studio 5000 and RsLogix 5000.  You just need to go to the download center and get it.  See the video in this link, I show you how to do it. https://www.theautomationstore.com/studio-5000-training-where-can-i-download-studio-5000-logix-designer-rslogix-5000-and-what-is-the-price-difference-of-each-version/

While not the exact answer you are looking for, Rockwell Automation has an excellent document on System Design for Control of Electrical Noise https://literature.rockwellautomation.com/idc/groups/literature/documents/rm/gmc-rm001_-en-p.pdf

Glad you got it chased down. Those problems can be hard to find. Thanks for letting us know.

Wild guess here...Is the internal 24V power supply being used to power outputs?  My wild guess is you are overloading power supply which is dropping it out.  I would try removing all the wires but the power wire and see if it will stay on then.

The limitation of RS-232 is 50 ft. Doesn't matter which protocol you run across it whether it be DF1 or DH485. You're still limited to 50 ft without repeaters

Glad you got it working. Thanks for letting us know.

Those are word level instructions so you are manipulating 16 points at a time. Have a look at the bit instructions. Here's a link to help you. https://www.theautomationstore.com/rslogix-500-training-xic-xio-ote-program-scan-step-by-step/

The I/O is addressed as I:S.W/B where S is the slot, W is the word, and B is the bit.  So you Inputs are I:0.0/0 - I:0.0/13 and your outputs are O:0.0/0- O:0.0/9.

The 1200 doesn't have I/O past I:0.1 on it's base unit.  Are you using expansion I/O?  Can you attached your program?

Here is a lesson series we did on different ways to sequence machines including counters, word/bit manipulation, multiplying integers, and sequencing instructions. https://www.theautomationstore.com/rslogix-500-training-programming-machine-sequences-to-do-an-automatic-process/

A decent USB to RS232 adapter should work for connecting your cable to your laptop's USB port.  Here is one we sell. https://www.theautomationstore.com/industrial-usb-rs232-usb-serial-adapter-plc-programming/

Yes that is exactly what the high speed counters are for.  While your application is low speed for a high speed counter, you risk missing pulses with regular inputs and ladder logic.

Here are instructions on how to navigate to the fault code.  https://www.theautomationstore.com/rslogix-500-the-big-red-fault-finding-understanding-and-clearing/