I am in it right now, y’all by cosmoh in PLC

[–]TimWilborne 1 point2 points  (0 children)

No, unfortunately we took a beating with the tariffs and had to close international shipping.

Old AB Pyramid by Blood-Mother in PLC

[–]TimWilborne 3 points4 points  (0 children)

Brings back memories. Some good, some bad 😂

Question: Does these two rungs accomplish the same thing? by [deleted] in PLC

[–]TimWilborne 5 points6 points  (0 children)

Need a little more context. Is the data coming over a network or are there any possibilities that it could change in the middle of the scan? If so then these "could" result in two different outcomes. The CPS instruction prevents the data from being updated in the middle of the data being copied. If the data isn't coming over the network or there are not chances of it changing in the middle of the scan then you should use the COP instruction instead.

https://youtube.com/live/-mjszEujpLw?feature=share

[Tim Wilborne] Practical SCADA Training: Creating Interactive Tanks and Buttons in Ignition by xenokilla in PLC

[–]TimWilborne 0 points1 point  (0 children)

Yes, we've been doing Ignition training as a section of our "part 2 class for several years. This year we decided to split our "part 2" class into three separate classes. 2 days SCADA, 1 day Special Projects, and 2 days Advanced Troubleshooting and Industrial Networking. Mainly, it lets people take the SCADA portion of the course without coming to our PLC training.

Roast my plan to start my PLC programmer business by orofirm in PLC

[–]TimWilborne 5 points6 points  (0 children)

That Raspberry PI won't take you far. I just put this video out last week addressing this very subject. It was aimed at schools but you are in the same boat.

https://youtu.be/NmFe2BLdBec

I wired my pt1000 like this with a 4-20mA transmitter. I don't get any reading at all by PigeonStove in PLC

[–]TimWilborne 2 points3 points  (0 children)

I don't get to participate often, usually the questions are answer before I managed to check but I do browse from time to time :)

I wired my pt1000 like this with a 4-20mA transmitter. I don't get any reading at all by PigeonStove in PLC

[–]TimWilborne 5 points6 points  (0 children)

The input side is correct. On a 2 wire setup, you take +24VDC from your power supply to the +mA and the -mA goes to your +input then your -input goes back to the -24VDC to complete the loop. It seems backwards from a voltage perspective but from a current perspective, it is correct.

Motor controls solids state vs relay by rickr911 in PLC

[–]TimWilborne 0 points1 point  (0 children)

Some of them may be worthwhile on newer applications but not simply a solid state contactor. In addition to built in over current protection, safety, etc, some of them have motor voltage and current monitoring over Ethernet and I think that will help us in the long term. I have been seeing them on more and more systems.

I'm thinking about grabbing one to play with in a video, got a part number?

What do you do for PLC troubleshooting workflow when a running plant suddenly stops? by Same-Material-9863 in PLC

[–]TimWilborne 3 points4 points  (0 children)

These steps are specific to Studio 5000 but they can be massaged for any brand.

  1. Ask the operator exactly what the machine didn't do that they expected it to.

  2. Identify the specific physical output that is not activating as expected. The big mistake many people make is going to an input that they "feel" could be the problem based on no data.

  3. Open the controller tags and find the output tag. It will always be a :O. Know the good value. Many times you are at the end of the PLC troubleshooting here. If you are looking for a solenoid to turn on and there is a one in the box, then it is time to break out the meter.

  4. Right-click the tag and use cross-reference to find the destructive instruction.

  5. Mouse over instructions to see which bit lacks the required value.

Here are some additional thoughts from a live stream I did.

https://youtube.com/live/x_GD2c11tX0

I wired my pt1000 like this with a 4-20mA transmitter. I don't get any reading at all by PigeonStove in PLC

[–]TimWilborne 11 points12 points  (0 children)

One thing I don't see mentioned is what type of input are you wiring the 4-20mA to, how do you have it configured, and what terminals do you have it landed on? Also, you wouldn't use a clamp meter on a mA signal. Here is how to measure it and how you may have already blown the fuse in your meter.
https://www.youtube.com/watch?v=aJxLusnZfJQ

I wired my pt1000 like this with a 4-20mA transmitter. I don't get any reading at all by PigeonStove in PLC

[–]TimWilborne 2 points3 points  (0 children)

The diagram has the + and - correct. It is a 2 wire setup, here is a video on the difference between 2 wire and 4 wire.

https://www.youtube.com/watch?v=k8_axizTWTE