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Search: Posts Made By: xzen
Forum: LIVE PLC Questions And Answers January 12th, 2021, 06:10 AM
Replies: 5
Views: 679
Posted By xzen
Edge trigging in ST or SCL

What is your best practice for edge trigging in structured text language?

#condition := (Value1 > 0 OR NOT Tag1) AND Tag2;
IF #condition_positive_edge THEN
some_code();
END_IF;
Forum: LIVE PLC Questions And Answers October 27th, 2020, 05:55 AM
Replies: 2
Views: 1,170
Posted By xzen
I found Siemens Library for HTTP Communication...

I found Siemens Library for HTTP Communication useful:
https://support.industry.siemens.com/cs/document/109763879/library-for-http-communication-(lhttp)?dti=0&lc=en-CH
With some tweaks I got this...
Forum: LIVE PLC Questions And Answers September 12th, 2020, 06:30 AM
Replies: 26
Views: 2,821
Posted By xzen
I was happy with my old Dell Precision M4600....

I was happy with my old Dell Precision M4600. Except RS-232, it had all kinds of ports and readers. Even a CD/DVD-drive. Last year I replaced it with a Precision 5520, not checking the specs to...
Forum: LIVE PLC Questions And Answers April 2nd, 2020, 04:42 AM
Replies: 15
Views: 1,903
Posted By xzen
Good input!

Thank you all for your input. Good advices and answers to my first question. Not so much about my second question however. With the danger of derailing the topic, I just remember this recent story: I...
Forum: LIVE PLC Questions And Answers April 1st, 2020, 07:22 AM
Replies: 15
Views: 1,903
Posted By xzen
Charge for email or phone support?

Today a customer emailed me about a problem, and I was able to guide them to a solution. This factory plant is 20 minutes away. Under other circumstances I may offered to pay them a visit, which I...
Forum: LIVE PLC Questions And Answers November 13th, 2019, 05:24 AM
Replies: 2
Views: 1,170
Posted By xzen
S7-1200/1500 as REsT API client

I want to communicate with a MiR robot using REST API. I run successful tests using Postman software on a Windows computer. But when I try to send the same request from Simatic S7-1500 PLC using...
Forum: LIVE PLC Questions And Answers January 31st, 2019, 07:58 AM
Replies: 56
Views: 7,586
Posted By xzen
A very nice weekend in our cabin up in the...

A very nice weekend in our cabin up in the mountains. I brought my computer to maybe do some work. But Saturday night my wife wanted full attention :yeah: Anyway, a great weekend i t was.
We had...
Forum: LIVE PLC Questions And Answers January 23rd, 2019, 12:47 PM
Replies: 3
Views: 2,158
Posted By xzen
To get a stable communication, try to deactivate...

To get a stable communication, try to deactivate packet segmentation for Modbus/TCP in Festo Configuration Tool (FCT). It's the little "activ" ticker box under Fielbus\Operation Parameters.
Forum: LIVE PLC Questions And Answers September 9th, 2018, 04:34 PM
Replies: 13
Views: 2,037
Posted By xzen
Measure actual speed

You need to measure the Actual speed. You measure wire speed from bobbin with an encoder or analog tacho on a support wheel/pulley before the dancer. Substract actual speed from set speed and add the...
Forum: LIVE PLC Questions And Answers September 9th, 2018, 03:49 PM
Replies: 2
Views: 1,007
Posted By xzen
Thanks!

Thanks!
Forum: LIVE PLC Questions And Answers September 8th, 2018, 07:28 AM
Replies: 2
Views: 1,007
Posted By xzen
S7-1200 dynamic change of Profinet - OB(s) to consider

My current project has a Simatic S7-1200. It involves a robot with two different tools. Each tool has their own Profinet I/O-devices with different addresses and configurations. Changing tools...
Forum: LIVE PLC Questions And Answers June 26th, 2018, 03:59 AM
Replies: 0
Views: 695
Posted By xzen
CAD symbol for AS-i emergency switch

Not directly a PLC-question. But I know some of you guys also do CAD and deal with AS-i. So how do you draw an AS-i emergency stop pushbutton? Here is my suggestion (European IEC-style).
Forum: LIVE PLC Questions And Answers January 30th, 2018, 06:52 AM
Replies: 6
Views: 1,130
Posted By xzen
As Jeev points out, there is no easy way to...

As Jeev points out, there is no easy way to integrate any PLC with Continuous Ink Jet (CIJ) printers.

I made several applications where the message need to change in real time, fast and in right...
Forum: LIVE PLC Questions And Answers November 17th, 2017, 04:50 AM
Replies: 2
Views: 1,112
Posted By xzen
No, enumeration names are part of your...

No, enumeration names are part of your enumeration type definition. What are you trying to achieve?
Forum: LIVE PLC Questions And Answers November 17th, 2017, 03:45 AM
Replies: 3
Views: 1,001
Posted By xzen
It depends on both PLC and programming style. ...

It depends on both PLC and programming style.

Sometimes I find it convenient to use a 1 s (or 0.01 s as in this case) blinking timer and use blink edge to count or add up number of seconds (or...
Forum: LIVE PLC Questions And Answers November 16th, 2017, 03:53 AM
Replies: 7
Views: 1,550
Posted By xzen
I'm not into Crimson 3, but think I understand...

I'm not into Crimson 3, but think I understand your challenge. You definitely should look into PID.
Forum: LIVE PLC Questions And Answers November 16th, 2017, 03:39 AM
Replies: 3
Views: 1,573
Posted By xzen
AI may be useful when conditions randomly change....

AI may be useful when conditions randomly change. That is is hardly the case in a controlled production envirnment. Effort should be put into a good diagnostic and alarm system as Peter suggest.
I...
Forum: LIVE PLC Questions And Answers September 22nd, 2017, 05:00 AM
Replies: 1
Views: 1,311
Posted By xzen
Do you have the project files? Or at least a...

Do you have the project files? Or at least a printout of of the program? Preferably commented and with symbolic list. Do you have other documentation like electrical drawings, sequence diagram,...
Forum: LIVE PLC Questions And Answers May 12th, 2017, 01:41 PM
Replies: 5
Views: 2,340
Posted By xzen
You may try the WWDosCommand function instead of...

You may try the WWDosCommand function instead of StartApp. The script function WWDosCommand, can be found in Wonderware Tech Support Script Function Library online or on the Knowledgebase CD.
Else I...
Forum: LIVE PLC Questions And Answers February 10th, 2017, 07:00 AM
Replies: 11
Views: 19,578
Posted By xzen
Set focus to objects in WinCC flexible

You can set focus to objects by tab order number.

To display tab numbers, select from menu View\Tab Order. Tab order will be displayed by small black boxes in upper left corner of the I/O...
Forum: LIVE PLC Questions And Answers April 27th, 2016, 06:42 AM
Replies: 2
Views: 1,341
Posted By xzen
Grafcet

Iíve found SFCEDIT by http://stephane.dimeglio.free.fr/sfcedit/en/ a simple and reasonably priced Grafcet Editor for planning and documenting sequences.

But the documentation is bad, and I have...
Forum: LIVE PLC Questions And Answers April 26th, 2016, 07:17 AM
Replies: 34
Views: 7,933
Posted By xzen
Sequences

While programming sequences I usually have each step represented by individual bits. In other cases it makes sense using Integer representation, for example when programming in Structured Text or...
Forum: LIVE PLC Questions And Answers March 15th, 2016, 05:08 AM
Replies: 4
Views: 1,803
Posted By xzen
Look here: ...

Look here:
http://www.plctalk.net/qanda/showthread.php?t=45950
Forum: LIVE PLC Questions And Answers January 25th, 2016, 09:44 AM
Replies: 3
Views: 1,838
Posted By xzen
Article database

I did a project like this for a customer who had many hundred product variants produced on a set of machines that was fully automatically, semi automatically or manually set up or reconfigured for...
Forum: LIVE PLC Questions And Answers January 25th, 2016, 05:26 AM
Replies: 6
Views: 1,107
Posted By xzen
Have you tried split and concatenate? filepath...

Have you tried split and concatenate?
filepath = "\\machine\c$\Logs\" + "03_filename.log"
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