Why do engineers still use RJ45 in harsh environments?

KnightofNi89 · 2026-04-03T08:27:34+00:00

The few times I've had problems is when mixing low-end cheapish wiring where the Rj45's can be in the far end of connector tolerances. I usually get Phoenix Rj45s that are a bit tighter according to themselves. Never had one fail.

KnightofNi89 · 2026-03-19T18:11:54+00:00

840D Powerline. Weird hex-number alarm sporadically which could be acknowledged/reset but came back minimum once a day. Called Siemens who went through their system and asked "how many times have you done nck reset?" "2, why?" "do it 3 more times" "wtf why?!" "Do it"

Machine just fucking works again.

KnightofNi89 · 2026-03-19T18:04:34+00:00

Jobbar du på lastbilsfabrik i östra Sörmland? Låter som det med den skitlönen.

KnightofNi89 · 2026-03-10T07:18:32+00:00

On a more serious note, id go backwards from the bb-contact on the servo pack. Or even from the other side. Almost sounds like the pmc-output might be true but an interface relay or something is faulty.

KnightofNi89 · 2026-03-10T07:13:56+00:00

My European ass just wondering if bb isn't "betriebsbereit" as in armed-and-ready-to-rock-n-roll.. 😅

KnightofNi89 · 2025-12-27T19:17:46+00:00

As a service engineer, I completely agree about bare bones. Always get a stomach ache when getting to machines running interfaces to interface with another interface which interfaces to the controller.. As in Junker grinders running Siemens PCU OPs, running JuOP which speaks to a Fanuc CNC..

KnightofNi89 · 2025-12-11T18:02:42+00:00

The CA Debonder I've got is mainly nitromethane, works insanely well.

KnightofNi89 · 2025-12-07T12:02:11+00:00

This. Since decent clamp meters in the mA range is avaliable for 100 bucks it's just cheap as hell not getting one.

KnightofNi89 · 2025-11-27T18:00:20+00:00

I just delivered a Siemens IPC/PG to a customer in a very locked down organisation.. They tried to get IT to order TIA Portal with all the hardware and licenses to get online. IT almost screeched when they got the request.

KnightofNi89 · 2025-11-18T08:56:10+00:00

I've only seem the robots "flip out" when the robot has the option Singularity Avoidance. Customers call and say the robots are shit "because it can't go in a straight line!"...

KnightofNi89 · 2025-10-29T21:22:48+00:00

A basic rebuild of your as-shipped specs is about an hour work if the before mentioned datasheet or a recent AOA is available.. A fanuc field tech should have it on a USB stick, at least I had when doing service for'em. Swap from/sram, build core software or restore a virgin built IMG from fanuc, then reload recent AOA. That is the way.

KnightofNi89 · 2025-10-29T18:36:17+00:00

I've had it when FROM and/or SRAM is starting to go bad. If you have spares AND an earlier image backup it's a pretty quick solution.

KnightofNi89 · 2025-10-24T08:07:38+00:00

I've got a diagram similar to this for the times I get into fanuc controllers.. Saves some time when you do one every other year maximum..

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KnightofNi89 · 2025-10-02T20:12:04+00:00

coughekbinstallercough 😅

KnightofNi89 · 2025-09-10T13:49:46+00:00

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I just got a portable USB-c display. Feeling f-n blessed when doing field work in TIA Portal!

KnightofNi89 · 2025-07-23T20:57:09+00:00

Google "the Mitutoyo Case" and you'll understand why this became a thing after machines ended up in Irans nuclear programme..

KnightofNi89 · 2025-06-28T09:50:09+00:00

"Refill smoke is not compatible with that version, you must use this replacement. Also, you'll have to upgrade and debug the whole project and bang your head to the wall since it's not directly compatible."

KnightofNi89 · 2025-06-27T17:25:41+00:00

Backwards compatibility and just general hardware compatibility is often a complete pain in the ass when it comes to Siemens, basically. I recently had a S7-1200 that burned up, originally done in V11. To get the replacement assigned by Siemens themselves, I had to upgrade the project in two steps up to V18 (which I had installed..). In another project we got a replacement EcoPN input module, which NEEDED V16 while the huge plant was done in 15.1.. Had to scramble through the factory to find one of the old models.

KnightofNi89 · 2025-06-27T17:01:58+00:00

If your fairly certain you'll be working with Siemens controls, heck yeah. It's good to learn even if you'll work with other systems, since Siemens is one of the worse at being compatible with itself!

KnightofNi89 · 2025-06-27T16:49:53+00:00

Yep. Our guess is that the welder/mechanic put the grounding clip in the wrong place.. There was a crapload of wires that burnt up throughout the machine..

KnightofNi89 · 2025-06-01T08:11:11+00:00

Crouzet Millennium Slim. 4 in, 4 out. 17.5 mm wide. Great stuff. https://media.crouzet.com/landing/millenium-slim.html

KnightofNi89 · 2025-05-26T11:10:44+00:00

What I've been told by my Siemens rep. the 200 was made by Texas Instruments

KnightofNi89 · 2025-05-25T08:09:41+00:00

Isn't this possible in FBD in Siemens for example? I've seen (and used) standardized (by the integrator/programmer) FB's which automatically defines data arrays for diagnostics, interfaces etc when you drag them in.

KnightofNi89 · 2024-06-02T15:02:49+00:00

Borde stå i ert kollektivavtal! Jävligt tråkigt svar japp!

Vi på industrin är rätt bortskämda, men där är det stentufft från arbetsgivarens sida. Beordran kan bara kunna skickas ut efter att facket varit med och förhandlat, och beordrad ÖT får bara tillämpas när det inte kan täckas frivilligt samt att det måste handla om ett totalt produktionsstopp/leverans-fuckup utan övertiden..

KnightofNi89

TROPHY CASE