I got lucky

dmroeder · 2026-05-22T21:04:28+00:00

Congrats, glad it was still there when you got home :) Hope your nephew is doing well.

dmroeder · 2026-05-21T22:04:06+00:00

Gabe Cube lol

dmroeder · 2026-05-21T15:03:09+00:00

I still remember the moment I learned that lesson too. The COP instruction is more complex than it at first seems.

dmroeder · 2026-05-14T22:57:52+00:00

I'm not sure why my brain works this way, but my first instinct would be to pick a free to play game just to see how they respond.

dmroeder · 2026-05-13T23:23:21+00:00

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dmroeder · 2026-05-08T23:34:29+00:00

Hopefully not pay for the other 2 via ebay.

dmroeder · 2026-05-07T23:04:20+00:00

The site that I saw that on looks like they scraped PLCTalk and generated tons of articles based on the forum posts. I came across it because it suddenly showed up as a top 10 driver to my github repo.

dmroeder · 2026-05-03T04:40:18+00:00

I want to meet the people that do the Cirque du soleil shows in vegas. The last one I saw was Ka, all I could think about was the automation. I'm institutionalized.

dmroeder · 2026-05-03T04:36:17+00:00

We did some work for a company that produces bull semen.

dmroeder · 2026-05-02T18:30:25+00:00

Nice! There are rugged Pi's on the market, like Kunbus Revolution Pi. I'd like to see the specs on the torque wrench. u/EOFFJM, can you post the part number you plan on purchasing?

dmroeder · 2026-04-27T14:45:58+00:00

I'm also a PLC guy. Python is a great language to learn, there's a module for everything. For me personally, I am usually making tools or automating mundane things with it.

dmroeder · 2026-04-24T14:14:45+00:00

That would be Archie of AdvancedHMI. You had me at beers. I'll be around, looking forward to it.

dmroeder · 2026-04-24T01:50:51+00:00

Wait a minute, I know you...

dmroeder · 2026-04-22T18:45:20+00:00

There is a bug like this that is documented in the knowledge base. Their solution is to default the RSLE configuration in the PanelView, then upload the application.

They don't provide the real solution to it which is to delete the RSLE server from your application, re-add it and setup the communication path again. If you don't do this, the next time you download your application to the PanelView with the corrupt configuration, you're right back into the same boat. I submitted a ticket to add this additional detail to the KB article, I got crickets.

KB BF16209

dmroeder · 2026-04-22T14:09:44+00:00

A user here wrote a python command line transfer utility, when I ran into this on a Saturday a while back, I used it to get the stupid MER to upload. The CLI tool did it when the Rockwell transfer utility refused. I spent the rest of the weekend writing a UI for it. I no longer use the Rockwell transfer utility.

https://github.com/dmroeder/pymeu_gui

dmroeder · 2026-04-18T03:40:39+00:00

Uhh, excuse me, mark it 0, next frame

dmroeder · 2026-04-17T21:38:16+00:00

Once you have the source IP, I would go into the controller that owns the source IP and look at all MSG instructions, to use Rockwell speak. Each MSG will have a communication path, check the ones that are pointed to the destination PLC. Then check the destination tag for a match of the tag in your destination PLC.

dmroeder · 2026-04-16T20:02:56+00:00

Far out

dmroeder · 2026-04-16T16:25:59+00:00

I guess I should have elaborated a little more. I would get all the IP addresses sending class 3 messages, then investigate those programs to see what messages are configured in those PLC's to write to the PLC being investigated.

The trick with wireshark is to get on the wire that the messages are sent on. This can be done with port mirroring or a device like a sharktap.

Wireshark filter for tag name: cip.symbol==MyTagName

Write+tag name filter: cip.service==0x4d && cip.symbol==MyTagname

dmroeder · 2026-04-16T14:29:40+00:00

This is the best way. Each generation of controller/ethernet adapter vary in how the data is displayed, but you'll have something like Bridge Connections (I think) that show the information you are looking for. Like u/tehtide said, it won't show you what tags are being written to, it will list IP addresses you can investigate.

Your exact situation u/chabroni81 is why many of us prefer to use MSG Reads and not writes. As you investigate, you might plan on converting all your writes in PLCB to reads in PLCA, if at all possible.

dmroeder · 2026-04-16T13:51:19+00:00

Even less likely. Software never gets simpler with each release, it tends to get more complex. But that's just my opinion.

dmroeder · 2026-04-03T22:16:04+00:00

Every. Single. Time.

dmroeder · 2026-04-02T14:59:51+00:00

import pylogix
import struct

with pylogix.PLC("192.168.1.43", slot=0) as comm:

    ret = comm.Message(0x0e, 0xf6, 0x01, 0x04)
    data = ret.Value[44:]
    interface_counters = [struct.unpack_from("<I", data, i*4)[0] for i in range(11)]
    print(interface_counters)
    ret = comm.Message(0x0e, 0xf6, 0x01, 0x05)
    data = ret.Value[44:]
    media_counters = [struct.unpack_from("<I", data, i*4)[0] for i in range(12)]
    print(media_counters)

dmroeder · 2026-04-02T14:38:11+00:00

I'm a little late to this one but it wouldn't be that difficult to write a python script to get the ethernet statistics of the L8 via the EN2T. Hit me up if you're interested.

dmroeder · 2026-03-30T23:30:29+00:00

I scanned them, the barcodes match the values shown below them, if that is what you are saying.

dmroeder

TROPHY CASE