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Search: Posts Made By: RocketTester
Forum: LIVE PLC Questions And Answers February 16th, 2018, 04:57 PM
Replies: 1
Views: 134
Posted By RocketTester
I have used TwinCAT3 since it came out...

I have used TwinCAT3 since it came out (sporadically) and haven't seen anything termed "worker task" vs "normal task". The task views I know of are in the Project tree where it shows the priorities...
Forum: LIVE PLC Questions And Answers February 5th, 2018, 01:34 PM
Replies: 3
Views: 303
Posted By RocketTester
I would start on KUKA's site since your questions...

I would start on KUKA's site since your questions would be specific to it, while ST is general and the same for all PLC vendors (IEC 61131-3 standard).

Does the KUKA code employ Beckhoff's...
Forum: LIVE PLC Questions And Answers February 5th, 2018, 01:26 PM
Replies: 11
Views: 537
Posted By RocketTester
A coworker had the same/similar TC3 error message...

A coworker had the same/similar TC3 error message recently. I looked at it and found it was actually a Visual Studio problem. VS wouldn't let you even start a new project (Visual Basic, C#, F#,...
Forum: LIVE PLC Questions And Answers February 5th, 2018, 01:06 PM
Replies: 1
Views: 142
Posted By RocketTester
Sorry for seeing your question so late. I...

Sorry for seeing your question so late.

I noticed "an additional link between a new global output variable".
One is allowed to link only one PLC variable linked to an output channel. Otherwise,...
Forum: LIVE PLC Questions And Answers January 15th, 2018, 03:16 PM
Replies: 18
Views: 628
Posted By RocketTester
If the 2 PLC's are in the same Control Room, one...

If the 2 PLC's are in the same Control Room, one would normally tie them to the same analog and digital commons (why they are called "common"). In that case, just wire the signal+ to both PLC's and...
Forum: LIVE PLC Questions And Answers January 5th, 2018, 01:21 PM
Replies: 12
Views: 586
Posted By RocketTester
To go further off topic (on a Friday), ...

To go further off topic (on a Friday),

Kalabdel's experience could be a programming glitch where the selection (floor 2) counts from 0 and actual destination (floor 3) counts from 1, though wonder...
Forum: LIVE PLC Questions And Answers January 5th, 2018, 11:20 AM
Replies: 15
Views: 945
Posted By RocketTester
Checking back. Great answers, but the OP appears...

Checking back. Great answers, but the OP appears to be a drive-by poster who never returned to give more details or even thanks.
Forum: LIVE PLC Questions And Answers January 4th, 2018, 03:50 PM
Replies: 2
Views: 110
Posted By RocketTester
I have never done exactly what you are trying,...

I have never done exactly what you are trying, but have used TC2 and TC3 since 2005.

ADS refers to communication between your "Windows HMI" and the "TwinCAT runtime". Your current HMI is...
Forum: LIVE PLC Questions And Answers January 4th, 2018, 03:19 PM
Replies: 12
Views: 586
Posted By RocketTester
Selamat. Isteriku dari Indonesia, dan saya jalan...

Selamat. Isteriku dari Indonesia, dan saya jalan di Ambon, Komodo, Bali dan Jakarta di Agustus 2017.

I don't think you can program it solely in SFC. SFC allows designing an overall logic flow...
Forum: LIVE PLC Questions And Answers January 2nd, 2018, 10:57 AM
Replies: 15
Views: 945
Posted By RocketTester
I am guessing a bit at your question since it...

I am guessing a bit at your question since it isn't stated with proper grammar, and doesn't even state correct facts. To re-state, the sensor has a 24 VDC input and a "sig" output which goes to a...
Forum: LIVE PLC Questions And Answers November 9th, 2017, 06:25 PM
Replies: 10
Views: 505
Posted By RocketTester
Ronnie, aand74 needs to smooth a signal by...

Ronnie,
aand74 needs to smooth a signal by numerical averaging. A running average is a simple method. It approximates an analog low-pass filter.
Forum: LIVE PLC Questions And Answers November 9th, 2017, 03:39 PM
Replies: 10
Views: 505
Posted By RocketTester
Peter, I clearly said T has units of sec. ...

Peter,

I clearly said T has units of sec. But, not necessary since the equations work in any consistent set of units. If T <> sec, then fco <> Hz.

Yes, one must assign values to the constants...
Forum: LIVE PLC Questions And Answers November 9th, 2017, 10:23 AM
Replies: 11
Views: 519
Posted By RocketTester
For a high-speed PLC, you can just multiply...

For a high-speed PLC, you can just multiply instantaneous I & V sensor readings to calculate instantaneous power. I did that at my last company, but with National Instruments hardware. But, you...
Forum: LIVE PLC Questions And Answers November 9th, 2017, 10:01 AM
Replies: 10
Views: 505
Posted By RocketTester
The equation you show is an easy way to...

The equation you show is an easy way to approximate a 1st-order low-pass filter. It is variously termed "running average" or "exponential filter". The later is from Management Science and...
Forum: LIVE PLC Questions And Answers November 6th, 2017, 09:21 AM
Replies: 19
Views: 29,993
Posted By RocketTester
Often one can't log-in to the PLC because it is...

Often one can't log-in to the PLC because it is not in the "run-mode" state. TwinCAT tries to lead you thru the correct steps.

After "Activate Configuration", it asks if you want to change to...
Forum: LIVE PLC Questions And Answers November 1st, 2017, 12:41 PM
Replies: 6
Views: 400
Posted By RocketTester
Linking is within System Manager, which was a...

Linking is within System Manager, which was a stand-alone program in TwinCAT2. As a separate task, you must also Build your PLC project code and download it to the PLC's CX by "logging in". You...
Forum: LIVE PLC Questions And Answers November 1st, 2017, 12:25 PM
Replies: 35
Views: 2,086
Posted By RocketTester
I wonder what the dealer meant by "programming in...

I wonder what the dealer meant by "programming in Simulink". Matlab/Simulink has a tool to export a simulation model as PLC code (Structured Text, I recall), which can run on an Allen-Bradley or...
Forum: LIVE PLC Questions And Answers October 12th, 2017, 08:49 AM
Replies: 15
Views: 1,243
Posted By RocketTester
Good point, since piash didn't mention what CPU...

Good point, since piash didn't mention what CPU he is using. The higher-end Beckhoff CPU's like CX1020, CX2020 can run 0.05 ms cycle time (w/ reasonable amount of PLC code and I/O). I usually run...
Forum: LIVE PLC Questions And Answers October 11th, 2017, 09:28 AM
Replies: 14
Views: 515
Posted By RocketTester
It will likely need to be custom. You would need...

It will likely need to be custom. You would need Windows code (VB, C#, ...) which monitors encoder changes and push-buttons and translates that into desired mouse positions on the screen which you...
Forum: LIVE PLC Questions And Answers October 11th, 2017, 09:15 AM
Replies: 15
Views: 1,243
Posted By RocketTester
I usually avoid the Timer functions in ST since...

I usually avoid the Timer functions in ST since they look cryptic, though I have used in FBD where they look nicer. I find it more direct and readable to just count PLC cycles. You zero the counter...
Forum: LIVE PLC Questions And Answers May 24th, 2017, 02:57 PM
Replies: 4
Views: 713
Posted By RocketTester
Probably best would be if there is a file on the...

Probably best would be if there is a file on the PLC PC (CX,...) which represents the PLC code in use. Such is true in the \Boot folder, but I think only if the User creates a Boot Project as they...
Forum: LIVE PLC Questions And Answers April 27th, 2017, 09:35 AM
Replies: 7
Views: 615
Posted By RocketTester
A bit unclear. You mention "safety PLC". Does...

A bit unclear. You mention "safety PLC". Does this mean you have separate safety modules? In Beckhoff world, these are yellow and have a dedicated logic controller with its own safety program...
Forum: LIVE PLC Questions And Answers April 27th, 2017, 09:15 AM
Replies: 7
Views: 1,047
Posted By RocketTester
RPM of what - motor or a wheel/shaft on the...

RPM of what - motor or a wheel/shaft on the vehicle? Cheap and simple would be to repurpose an automotive sensor. All today have crankshaft and camshaft sensors, plus similar on the transmission. ...
Forum: LIVE PLC Questions And Answers April 6th, 2017, 10:34 AM
Replies: 3
Views: 547
Posted By RocketTester
I assume you mean you modified the PLC code. Did...

I assume you mean you modified the PLC code. Did it compile w/ no errors or warnings (Rebuild All)? Until you get a good build, you won't be able to go online. I have seen cases where we got only...
Forum: LIVE PLC Questions And Answers April 6th, 2017, 09:11 AM
Replies: 15
Views: 1,265
Posted By RocketTester
My company is in a medium-size city, but we have...

My company is in a medium-size city, but we have a Beckhoff support engineer just 15 miles away, who is extremely detailed and responsive. He even goes the extra mile and reviews quotes submitted to...
Showing results 1 to 25 of 181

 
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