I saw the news that this PHP vulnerability had just come up. Then, it dawned on me just how screwed up it would be if this vulnerability was used to take whole plants offline.

How does this impact PLCs? How susceptible are they?

What steps can we take on an integrator level to mitigate the vulnerability?

Are any plants already taking steps?

How would we protect legacy systems that 100% do not have the means to protect themselves?

Hi everyone, I received a Allen-Bradley CompactLogix 1769-L18ER-BB1B but i don't have a properly power supply. Does anyone know if i could use a PC's one? Or any other way to turn it on and check if it's working. I really don't have any idea of how do it, i accept all the recommendations.

Title says it all. I keep hearing mixed reviews about CODESYS. Some people swear by it because it's hardware-agnostic, while others complain about the IDE stability and UI.

For those who use it daily: Is it actually worth learning and adopting, or is it just a budget alternative to TIA Portal/Rockwell? What's your honest take?

Hi,

Ive recently installed VirtualBox, using an XP iso and installer RSLogix5000 v13.04 as we I need a backup for getting online in the interim.

Ive got the software, got FT Activation Manager, installed dongle for licensing and can see the binding and licences within available activations. Whenever I try to open Logix5000 it just comes up with no activations available.

Anyone had any success with this or seen a similar issue?

Morning,

I’ve done various small projects but about to undertake a project which will have different alarms. How is best to handle alarms which will cause other parts of the machine to alarm? Ideally I want to capture the initial alarm not any of the secondary alarms/faults.

How is best to do this?

I'm new to PLC programming and work has been letting me dip my toes into assisting our maintenance crew with fixing aging equipment.

I've got a servo driven auger that gets a signal from an old Mitsubishi FX1S-14MT PLC. The HMI started reporting recently that the PLC was disconnected so we got a used one with an identical model number to replace it.

Everything works but the signal chain to servo via the HMI. It even lets us trigger it manually in the ladder logic through an old GX Developer install I managed to get running on a VM in Windows 10.

I feel like I'm missing something dumb like a misconfigured baud rate or default setting I should have checked when reading the program from the old PLC before removing it.

Any direction would be greatly appreciated🙏. This is the first time in a long time I have actually felt excited to go to work. This type of problem solving is really scratching an itch in my brain. 😜🤩🤯