Hello,
I am curious. EtherCAT sounds like a promision technology, Ethernet based high bandwidth capability and also real time capability.
But why isnt EtherCAT preferred/used in off-highway machinery? I hear that the off-highway machinery is also looking for the next Ethernet based technology. Why not just adopt EtherCAT? Any idea?
I have the following error on a 317F -3 PN/DP Siemens PLC with the SF light Solid Red:
Area length Error when writing
Global DB, bit access, Access Address: 7
Requested OB: Programming Error OB (OB121)
Priority Class: 1
Internal Error, Incoming 1.
Which address is it referring to when it says Address 7? I cannot find the DB in question. Hoping someone here can shed some light.
What I have tried so far.
Stopping the PLC and Checking the Stacks Tab Shows DB122, DB27 FC27 And FB27. Double clicking FC27 brings me to Network 4. Which I temporarily deleted to check if the fault disappears with no luck. I then blocked calls to all of these but I cannot find the root DB for the write error. I also tried to download the blocks back with an offline project (backup) thinking it might be a corrupted download but that did not solve anything.
I started to block all FC calls in OB1, 1 at a time to check if it was something there. But I cannot find the root cause for this.
Any help would be appreciated !!!!
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Graduated from a good school last year with my bachelor's in CS and got a job as a Control Systems Engineer as I wasn't getting any traction with SWE while applying and needed a job.
I make ok money but SWE is still my passion and I want to pivot.
I do a lot of PLC programming and network design, so im kind of missing out on all that agile CI/CD pipeline stuff that goes on in SWE.
Was about to start slinging apps soon so would like to hear about anyone elses' experience.
I’m currently working controls on the field and absolutely love it at the current moment. However, since it does involve travel, later down the road I was hoping to settle down or pivot to a local profession.
I am dealing with a consultant on a PLC project that has a security system background and thinks the two are similar enough that they’re an authority.
They wrote into a sequence of operations that all inputs need to be four state open/active/inactive/short which I’m used to on the security system side of the house, we do it every day, but all the PLC projects at this facility have all been digital thus far.
I’m thinking I have to use all analog inputs and just calculate my value based on open/1k/2k/short and then run with the logic from there, but I wanted to see if anyone else knows of an easier way. It’s all Omron NX series for the PLC.
Like an apprentice lost in ancient texts, I seek guidance from those who’ve mastered the craft.
I have 10 days to program a full process using RSLogix 5000 and FactoryTalk. The system includes tanks, pumps, transmitters, PID loops....fairly complex
What I really need is a concrete, real example of using the PlantPAx library for process control (control loops).
The ancient tomes are dense and veiled in mystery, I seek not theory, but a living spell, something practical I can follow, reshape, and bring to life.
Any scrolls, incantations or fragments of knowledge u can share would be a great boon to this struggling apprentice
Hi, I’m trying to connect an ifm CR1074 to a Rockwell CompactLogix L19 over EtherNet/IP.
I’ve been working with ifm for about 3 years, so I’m reasonably familiar with the environment and this does not look like a basic setup mistake.
I tested with:
A completely empty project downloads correctly.
But as soon as I add the EtherNet/IP Ethernet Adapter, even before adding modules or variables, download fails with:
C0103: Out of retain memory: Variable 'g_c_lastAcdConflict', 350 bytes...
I also previously saw the same type of error with retainData.
I did not create any retain variables manually.
So it seems the problem appears just from adding the EtherNet/IP Adapter itself.
Has anyone seen this on ifm targets?
Is this a package/runtime compatibility issue?
Any known working version combination?
Goal is just to exchange 2 INTs with a CompactLogix L19.
I am taking a self taught workforce development course. My existing experience and electrical knowledge (basic 101 level, simple circuits) was deemed sufficient. However, now knowing I have to wire a control panel for a drill station, I'm concerned I don't possess sufficient knowledge to properly wire the control panel. I can work back circuits that are already wired to troubleshoot them but setting up the wiring....seems daunting. I was under impression this would be about programming with ladder logic primarily.
Wish to ask for help to wire this panel as seen per the ladder logic schematic and pictures seen here. https://imgur.com/a/GYFPOue
OR if have recommendations where to go to learn to read and wire the schematic appropriately?
please & thank you.
Trying to understand where people stand on this.
On one side:
Traditional PLC setups → stable, predictable, proven
On the other:
More software-defined automation ideas → modular, flexible, easier scaling (in theory)
But in real-world environments:
Which one actually works better long term?
Is the flexibility worth the added complexity?
Hello, im a lowly ET from Spain working maintenance at a heavy industry plant with 1 yoe (incl. my 2-year degree's apprenticeship period here, around 8 months), and while I'm already making above the sector average, I want to chase that per diem and OT, how does one even get into commissioning or field service work for an OEM, SI or staffing agency?
Is it more of a university eng job or is it just that Spain's unemployment is too high for me to get a junior position?? There are barely any job postings (linkedin job browser sucks ass big time) and those few ones have 100+ applicants, rather discouraging.
Tysm, I'd appreciate any type of response or feedback!
I’m currently working as a low-voltage technician handling fire alarms, CCTV, and access control systems. My job often involves installation work such as pulling cables, working alone, and spending long hours on ladders or boom lifts. On construction sites, I sometimes have to carry ladders up multiple floors without lifts for several days.
I’m now looking to move into a field that is less physically demanding, particularly with less reliance on ladders. I’m interested in working with Programmable Logic Controllers (PLC), and I’d like to ask:
Hi guys, so im a meche looking in to learning plc programming and general automation, i have gotten to a point where i can comfortably write st and ladder logic for most stuff and would like to have a way of simulating. So normally i have been thinking is factory io a good software for it, is it really used in the industry and is it a good way to actually get some experience so i can at least lend a junior tech or automation engineering job?.. one more thing i am pretty good with single board CPUs and microcontrollers and proficient in tools like matlab and c/c++ programming so plc programming wouldn't be the only skill i bring to a job. And have much experience with robotics as i competed in one during my studies.
Hi all, looking for some advice on an industrial networking problem I'm trying to solve.
I have a RevPi Core S with a KUNBUS EtherNet/IP gateway module (PR100066) acting as an adapter/slave. The module is connected to a large flat plant network with only unmanaged switches. A PLC on the same network acts as the EtherNet/IP scanner/master.
The EtherNet/IP connection between the PLC and the KUNBUS module keeps dropping. We believe the root cause is broadcast flooding from the flat unmanaged network overwhelming the module's small network stack buffer. The module works fine in point to point scenarios but struggles in this environment.
A. Is broadcast flooding on a flat network a plausible cause for an EtherNet/IP adapter dropping its connection repeatedly?
B. Is an industrial router/firewall the right approach for this isolation, or is there a simpler solution we're missing?
Thanks in advance
Experience: a few months, I guess 4, we mainly assembly and wire this panels for big AC units, I mean like 7 meters long and over 3 in height.
Any tips for improvement are welcome.
Buenas tardes.
Me gustaría que me dieran su opinión o consejos para este problema que se me presenta.
En este proyecto necesito conectar un Micrologix 850 a un escáner zebra LS2208.
El escáner zebra tiene conexión RJ50 a DB9 con alimentación externa.
El PLC se usará el RS232 mini din 8 pines.
Tengo el cable de la Zebra y el de AB. La cuestión es que la comunicación serial serial. Tuve que hacer un cable cruzando la señales TXD,RXD y GND. Configure el escáner con 123scan y el PLC a los mismos baudios y la misa paridad de bits. El puerto serial del AB está en ASCII. Pero no tengo nada de conexión entre ellos.
La empresa requiere que sea con estos escáner porque se manejan en gran cantidad y es más fácil reemplazarlo en caso de que se dañen.
¿Hay alguien que ya se haya aventado todo esto?
Cabe aclarar que lo estoy haciendo en CCW.
Agradecería su ayuda con este tema, de igual manera sigo investigando por mi cuenta. Tengo otras alternancia pero quiero quemar todas las opciones antes de saltar.
How to configure at PG laptop to connect to the HMI .?
And how to know the connection is correct. ?
Do i need to ping it IP address continuesly. ?
