You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > Search Forums

Showing results 1 to 25 of 465
Search took 0.50 seconds.
Search: Posts Made By: Thomas_v2
Forum: LIVE PLC Questions And Answers July 31st, 2021, 03:45 PM
Replies: 5
Views: 490
Posted By Thomas_v2
Use "db_Receive_2".Receive as parameter. ...

Use "db_Receive_2".Receive as parameter.
Remember that the client hast to send 2 bytes before the TRCV signals when new data has arrived.
Forum: LIVE PLC Questions And Answers July 31st, 2021, 03:34 PM
Replies: 5
Views: 490
Posted By Thomas_v2
The TSEND block has a parameter LEN, wih you can...

The TSEND block has a parameter LEN, wih you can see when you click on the triangle.

I believe if you have an array of char, you can enter the array without the bracket and index as DATA...
Forum: LIVE PLC Questions And Answers July 31st, 2021, 03:06 PM
Replies: 5
Views: 490
Posted By Thomas_v2
The TSEND REQ input needs a rising edge to send...

The TSEND REQ input needs a rising edge to send the data. A constant true after connection setup won't work. Have you tested it with a rising edge on M30.1?
Forum: LIVE PLC Questions And Answers July 26th, 2021, 12:17 PM
Replies: 3
Views: 567
Posted By Thomas_v2
If you only want to analyze the WinCC...

If you only want to analyze the WinCC communication, I'd install wireshark on the same machine. But you need a little bit of understanding of the protocol which is used, I had to fix a similar...
Forum: LIVE PLC Questions And Answers June 30th, 2021, 12:27 PM
Replies: 3
Views: 823
Posted By Thomas_v2
Try to find out the WinCC version of the project....

Try to find out the WinCC version of the project. If it's an rather old project, may be it cannot be converted to WinCC 7.5 in one step, and you do need some steps between.


WinCC v6.x projects...
Forum: LIVE PLC Questions And Answers June 30th, 2021, 12:12 PM
Replies: 3
Views: 823
Posted By Thomas_v2
There was a migrate option in WinCC flexible...

There was a migrate option in WinCC flexible which converted WinCC Scada projects (if I remember correctly only V6.2 projects). But it converts only the very basic screen items like lines,...
Forum: LIVE PLC Questions And Answers May 23rd, 2021, 02:43 PM
Replies: 20
Views: 30,330
Posted By Thomas_v2
Are you sure that FMS was used? You can also use...

Are you sure that FMS was used? You can also use FMS for PLC/PLC communication, and for a scada system you can also use the S7 protocol.
Forum: LIVE PLC Questions And Answers April 29th, 2021, 04:40 PM
Replies: 7
Views: 835
Posted By Thomas_v2
If your alarm bits are inside a struct of a DB,...

If your alarm bits are inside a struct of a DB, you can use the Serialize function to create a byte array out of the whole struct, and loop through the byte array using a For / Do ...
This works for...
Forum: LIVE PLC Questions And Answers April 17th, 2021, 05:05 AM
Replies: 4
Views: 958
Posted By Thomas_v2
If you need Modbus TCP and it's a CPU with PN...

If you need Modbus TCP and it's a CPU with PN interface, you can implement the Modbus TCP protocol in software using the basic TCP blocks of the CPU. Modbus TCP is relatively simple protocol, so it's...
Forum: LIVE PLC Questions And Answers March 27th, 2021, 07:41 PM
Replies: 56
Views: 7,387
Posted By Thomas_v2
It's not too difficult. If the calculation needs...

It's not too difficult. If the calculation needs 10 seconds but it's needed only every 20 seconds and the movement takes 5 seconds, then it's ok. I all depends on your requirements.

I've seen...
Forum: LIVE PLC Questions And Answers March 19th, 2021, 07:40 PM
Replies: 5
Views: 1,000
Posted By Thomas_v2
With a S7-300/400 you can get access to the...

With a S7-300/400 you can get access to the localdata of the predecessor by indirect addressing, for example if FC1 calls FC2 then FC2 could access the local data of FC1, but not from a completely...
Forum: LIVE PLC Questions And Answers March 19th, 2021, 07:34 PM
Replies: 1
Views: 808
Posted By Thomas_v2
You want to get the text of the selected entry in...

You want to get the text of the selected entry in the alarm control?

It's possible, but I don't think only with VB. The WinCC alarm runtime is a really (in my opinion unneccessary) complex beast,...
Forum: LIVE PLC Questions And Answers March 12th, 2021, 11:58 AM
Replies: 7
Views: 1,649
Posted By Thomas_v2
What do you mean with "AOS server"? ...

What do you mean with "AOS server"?



The S7 CPU may only support two requests without acknowledge. You can see the parameters of the CPU in Wireshark on "Setup connection" in the parameter...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 06:34 PM
Replies: 11
Views: 1,387
Posted By Thomas_v2
No, layer 1 is the physical layer, which seems to...

No, layer 1 is the physical layer, which seems to be hardware but is also in most parts done in software, but in most cases you can't access all layers when you've got an OS like Windows or Linux on...
Forum: LIVE PLC Questions And Answers February 17th, 2021, 04:36 PM
Replies: 12
Views: 19,994
Posted By Thomas_v2
With a IM308C it should be possible to use the S5...

With a IM308C it should be possible to use the S5 as DP master and the S7 as DP slave, as it's described in this Siemens FAQ:

https://support.industry.siemens.com/cs/de/en/view/6709721

For the...
Forum: LIVE PLC Questions And Answers February 3rd, 2021, 01:39 PM
Replies: 2
Views: 787
Posted By Thomas_v2
On some objects you can enable to display the...

On some objects you can enable to display the variable status. If the variable status is bad (e.g. PLC not reachable or addressing error), then you'll see the object greyed oout with an exclamation...
Forum: LIVE PLC Questions And Answers January 15th, 2021, 12:18 PM
Replies: 3
Views: 863
Posted By Thomas_v2
Thank you, it works. It looks a bit strange...

Thank you, it works.
It looks a bit strange with the intermediate block, and usually I guess an error when a SIM address is used more than once, but if it's the way to go.
Forum: LIVE PLC Questions And Answers January 15th, 2021, 03:35 AM
Replies: 3
Views: 863
Posted By Thomas_v2
iFix Generate alarm from boolean block

Hello,

in iFix I want to do a boolean calculation with two values, and generate an alarm if the result is true.

The calculation in my BL block is working, and I can see the result in the...
Forum: LIVE PLC Questions And Answers January 3rd, 2021, 10:15 AM
Replies: 1
Views: 777
Posted By Thomas_v2
It's possible, but you can't create low-level ISO...

It's possible, but you can't create low-level ISO packets with the standard network functions from Windows, thus you'd need a library like Npcap or WinPcap. For WinPcap there is a .Net wrapper...
Forum: LIVE PLC Questions And Answers December 23rd, 2020, 06:40 AM
Replies: 12
Views: 1,489
Posted By Thomas_v2
I'd say with this sensor it should be possible...

I'd say with this sensor it should be possible with a S7-1500 and a RS232 card which supports 115,2 kBit/s (you'd need the HF one), but you would need a level converter from TTL to RS232 levels like...
Forum: LIVE PLC Questions And Answers December 21st, 2020, 10:34 AM
Replies: 16
Views: 1,654
Posted By Thomas_v2
The easiest way without additional cost, will be...

The easiest way without additional cost, will be a global script in the WinCC runtime executed every 5 seconds for example, which writes the tag values to a simple text file, using json format for...
Forum: LIVE PLC Questions And Answers December 19th, 2020, 07:03 AM
Replies: 5
Views: 1,114
Posted By Thomas_v2
You can at least create a backup using the backup...

You can at least create a backup using the backup function on the HMI. Insert a USB stick, then move to the system panel (if someone hasn't provided button in runtime, power cycle the HMI and before...
Forum: LIVE PLC Questions And Answers December 10th, 2020, 04:05 PM
Replies: 15
Views: 2,594
Posted By Thomas_v2
There's a FAQ article on the Siemens website: ...

There's a FAQ article on the Siemens website:
https://support.industry.siemens.com/cs/de/en/view/8970169

See section "Further information" in the article, there are links to informations which...
Forum: LIVE PLC Questions And Answers October 28th, 2020, 01:30 PM
Replies: 20
Views: 2,103
Posted By Thomas_v2
I'm curious how Siemens wants to detect a...

I'm curious how Siemens wants to detect a connection status on UDP, as UDP has no connection, so there is no connection that could be lost. In UDP you can send a datagram to an IP address which does...
Forum: LIVE PLC Questions And Answers October 16th, 2020, 03:20 PM
Replies: 35
Views: 22,568
Posted By Thomas_v2
You call the MB_SERVER block from the Siemens...

You call the MB_SERVER block from the Siemens library in the S7-1200, enter the data area at the MB_HOLD_REG parameter. Then you can read or write this data from your Python program using a Modbus...
Showing results 1 to 25 of 465

 
Forum Jump

All times are GMT -4. The time now is 06:04 PM.


.