33 questions
0
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54
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Actions are all performed together
I'm having a problem that I can't figure out.
This is a function block of my program:
When I call the Emergency button to activate the emergency status it doesn't enter. To solve that I found that it ...
- 34
-1
votes
1
answer
60
views
how to set the input i/o in the output rung in the plc ladder diagram
I am using the Delta AS228T-A plc model and DIA Designer software to program the plc, i want to set the input gpio(X0.0) in the output rung like this below image
It throws me an error before i upload ...
- 9
0
votes
0
answers
104
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Math in ladder logic
I'm just starting up learning ladder logic, more specific in GP Pro EX. I'm trying to get the gist of how to do math proberly in LL.
Right now i have values that i want to multiply be eachother, but ...
- 1
0
votes
1
answer
143
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Trying to accumulate the number of seconds counted by a batch counter
I am trying to accumulate the number of seconds counted by a 'batch counter'. Every new batch, the counter automatically resets to zero and starts to count until the batch stop. I can't control the ...
- 121
2
votes
1
answer
115
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How can i develop a mutual exclusivity feature between thee inputs of PLC program using ladder logic in CX-programmer?
I have three inputs; Speed1, Speed2, Speed3. These inputs can be selected through interactive graphics on an HMI. Currently I can select all three speeds by clicking all three buttons. However, I want ...
- 23
1
vote
0
answers
231
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What data structure can I use to save nodes from a PLC ladder diagram in python? (Multilevel linked list with loops?)
I've been looking around but cant seen to find what data structure I can implement to represent a ladder diagram from a PLC program PLC in python.
For those not familiar with ladder diagrams. It is ...
0
votes
1
answer
2k
views
I having trouble installing tia portal v16 professional
after I put 'next', it appears like this bellow.
x dummy.
I don't how to fix this error.
I tried install so many times but I still have this error.
I hope everyone help me fix this error.
1
vote
1
answer
2k
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How to enter string value into Delta PLC?
I would like to insert string value into PLC, I searched a lot of information but unable to get an accurate method to do it. The plc that I using is DVP-14SS2 and I using wplsoft as the software to ...
- 21
1
vote
3
answers
1k
views
Setting single bit Siemens ladder
I have a value stored in MW20 and I need to set to most significant bit to 0 without using bit operations but I don't find how I need to do this. I know this:
----> MB20 = D7
/
MW20 = D7C5
...
- 380
1
vote
1
answer
186
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how to make my ladder plc hidden ?I want to make it secret from other people?
if I want to create a ladder diagram on step7.after I want to make it secret from other people?
- 11
1
vote
2
answers
443
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ladder, 1 or 2 rungs at a time, recursion / fibonacci error
I know there are a lot of already existing questions about this problem, but I haven't found anything that answers mine. My recursion is working fine for lower numbers (I tried int 10) but when I ...
2
votes
4
answers
2k
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How to prevent division by zero in ladder (PLC)?
I have to make a circuit to prevent dividing a number by zero. I tried to put a condition in front of the division block but it did not work. What could I do to solve that? Bellow is the non-...
2
votes
1
answer
7k
views
How to convert an array of characters into a string in Studio 5000 Logix Designer ladder logic
I have a barcode scanner that communicates with a 1756-L75 ControlLogix PLC over RS232.
The data from the scanner is read in byte by byte and stored in a SINT array as characters. It includes a ...
- 381
1
vote
0
answers
1k
views
Write bytes to a PLC device
I'm working around a connection between a PLC device and my companies PC. The PLC is the known Siemens S7-200 and I'm using vb.NET. Probably I should use another language but vb.NET is the one I'm ...
- 1,474
3
votes
2
answers
5k
views
Exporting Ladder Logic in Tia 14
TL;DR: What is the best way to Export Ladder Logic in Tia 14?
Recently my company has started using Tia Portal v14. The update was due and we have begun to do some work with the S7 1500 series of ...
- 169
5
votes
6
answers
18k
views
Best IDE for PLC ladder programming [closed]
Recently I trying to learn Ladder Logic programming for PLCs, but I want to know if there is any IDE to create Ladder programs better that Step7 or cx-programmer? Is there any plugin for Visual ...
- 4,609
13
votes
5
answers
6k
views
Testing ladder logic
We all know the various ways of testing OO systems. However, it looks like I'll be going to do a project where I'll be dealing with PLC ladder logic (don't ask :/), and I was wondering if there's a ...
- 23.9k