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Search: Posts Made By: JesperMP
Forum: LIVE PLC Questions And Answers Yesterday, 04:23 AM
Replies: 11
Views: 3,345
Posted By JesperMP
I agree with cardosocea. Get a powerful good...

I agree with cardosocea.
Get a powerful good quality laptop and a docking station for when you are not in the field.
And that your laptop is very rugged is not that important actually. Install all...
Forum: LIVE PLC Questions And Answers Yesterday, 04:10 AM
Replies: 26
Views: 578
Posted By JesperMP
I think your code is a correct reply to Rachids...

I think your code is a correct reply to Rachids suggestion.
But I also think that your code is a bad style !
Essentially, opening DBs and accessing variables by byte offset only, means you have...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 11:16 AM
Replies: 26
Views: 578
Posted By JesperMP
jeebs, you are confusing the guy with using STL...

jeebs, you are confusing the guy with using STL code for opening of DBs and manipulating DB words in an FC to mimic an FB.
Stuff like that should be avoided. Keep it simple is my mantra.
Forum: LIVE PLC Questions And Answers November 14th, 2018, 06:58 AM
Replies: 26
Views: 578
Posted By JesperMP
No. If you code a move inside an FC, and you use...

No. If you code a move inside an FC, and you use the FC several times, the move will use the same address. This is probably not what you want.

The proper way to have memory with an FC is to use...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 06:48 AM
Replies: 31
Views: 865
Posted By JesperMP
Over here we have 3 "clips" on our driving...

Over here we have 3 "clips" on our driving licenses (not physically, but the police will keep record for you !). If you get 3 clips, you loose your license and must go to driving school and a test....
Forum: LIVE PLC Questions And Answers November 12th, 2018, 09:13 AM
Replies: 9
Views: 277
Posted By JesperMP
I cannot know how you have arranged your program,...

I cannot know how you have arranged your program, but I still believe in 1 indicator = 1 tag.
That does sound as if your HMI are accesing instance DBs directly. Well yes, that is one of the reasons...
Forum: LIVE PLC Questions And Answers November 12th, 2018, 06:42 AM
Replies: 26
Views: 578
Posted By JesperMP
Not sure what you are trying to achieve, but you...

Not sure what you are trying to achieve, but you do realise that LW0 and the bool TEMP1 are overlapping ?

One should NEVER use the local "L" addresses such as L0.0 or LW0.
If you see an L...
Forum: LIVE PLC Questions And Answers November 12th, 2018, 05:32 AM
Replies: 9
Views: 277
Posted By JesperMP
Even if you can do something in the HMI with...

Even if you can do something in the HMI with scripts, or visibility, it is a cludge that is difficult to maintain. Just my opinion.
What stops you from using 1 address in the PLC ?
Forum: LIVE PLC Questions And Answers November 9th, 2018, 03:49 AM
Replies: 7
Views: 200
Posted By JesperMP
Your S7 CPU cannot connect to the scale, but if...

Your S7 CPU cannot connect to the scale, but if you connect the laptop instead of the S7 CPU with the same IP etc, the laptop can connect to the scale. That sounds as if the problem is in the S7 CPU....
Forum: LIVE PLC Questions And Answers November 8th, 2018, 09:35 AM
Replies: 13
Views: 654
Posted By JesperMP
There there now. Why is it so important to be...

There there now.
Why is it so important to be able to edit post for a longer time ?
To quote Steve Jobs
https://i.giphy.com/media/xDTO2BH3jz8kg/giphy.webp
Forum: LIVE PLC Questions And Answers November 8th, 2018, 09:18 AM
Replies: 13
Views: 543
Posted By JesperMP
You dont think Radar is overkill for 5-10 liters ?

You dont think Radar is overkill for 5-10 liters ?
Forum: LIVE PLC Questions And Answers November 8th, 2018, 08:00 AM
Replies: 13
Views: 543
Posted By JesperMP
Put the vessel on load cells.

Put the vessel on load cells.
Forum: LIVE PLC Questions And Answers November 8th, 2018, 04:43 AM
Replies: 30
Views: 1,257
Posted By JesperMP
And re VFDs with Ethernet I/P I know these...

And re VFDs with Ethernet I/P I know these brands:

AB (doh !)
Siemens G120C. 1.5kW/2hp with Ethernet/IP ability (6SL3210-1KE14-3AF2). List price ~800. You should be able to get a considerable...
Forum: LIVE PLC Questions And Answers November 8th, 2018, 04:26 AM
Replies: 30
Views: 1,257
Posted By JesperMP
It is, but it is also simpler and doesnt stress...

It is, but it is also simpler and doesnt stress the DC stage every time you activate an E-stop. Also, at least for Siemens G120 you can get up to PL=e which will be quite expensive with contactors....
Forum: LIVE PLC Questions And Answers November 2nd, 2018, 08:27 AM
Replies: 44
Views: 1,578
Posted By JesperMP
I do not completely agree with this. If you...

I do not completely agree with this.
If you rephase it to
"the symbol shall describe the status of the contact when it is not physically forced"
then I agree 100%. It is not the button or...
Forum: LIVE PLC Questions And Answers November 2nd, 2018, 08:04 AM
Replies: 13
Views: 654
Posted By JesperMP
All you get is the prestige of being an official...

All you get is the prestige of being an official supporter !
Well worth it IMO !!
:site:
Forum: LIVE PLC Questions And Answers November 2nd, 2018, 07:52 AM
Replies: 8
Views: 398
Posted By JesperMP
You must use Profinet cables. These always have...

You must use Profinet cables. These always have the shield.

For cables that exit the cabinet, you should definitely have shield terminals, like these:...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 09:14 AM
Replies: 11
Views: 444
Posted By JesperMP
The V14 license, licenses 11-12-13-14. The V15...

The V14 license, licenses 11-12-13-14.
The V15 license, licenses 11-12-13-14-15-15.1.
Forum: LIVE PLC Questions And Answers November 1st, 2018, 08:55 AM
Replies: 44
Views: 1,578
Posted By JesperMP
Contradictory arguments when used on E-stops as...

Contradictory arguments when used on E-stops as you do yourself.
Most safe is contacts open.
De-enegized state is closed (i.e. no-one is pushing the button).

I dont know about USA, but over...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 08:17 AM
Replies: 44
Views: 1,578
Posted By JesperMP
"Draw it as it comes out of the box". Not a...

"Draw it as it comes out of the box".
Not a bad way to define the state it should be drawn, except .... at what state is the tongue-in-grove switch when it comes out of the box ?
It could be with...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 07:18 AM
Replies: 3
Views: 92
Posted By JesperMP
S7-1200 supports Modbus TCP as both server and...

S7-1200 supports Modbus TCP as both server and client.
Example for S7-1200 and S7-1500 that you can popssibly adapt to your needs:
https://support.industry.siemens.com/cs/de/en/view/102020340
Forum: LIVE PLC Questions And Answers November 1st, 2018, 05:59 AM
Replies: 44
Views: 1,578
Posted By JesperMP
@theColonel26: The data sheet for the type you...

@theColonel26:
The data sheet for the type you mentioned in post 1:
http://www.ia.omron.com/data_pdf/cat/d4ns_d4ns-sk_ds_e_9_4_csm1235.pdf?id=1465

Notice on page 6 you have a diagram with the...
Forum: LIVE PLC Questions And Answers November 1st, 2018, 05:11 AM
Replies: 44
Views: 1,578
Posted By JesperMP
Nope, using a mechanical limit switch in that way...

Nope, using a mechanical limit switch in that way described above would be unsafe (!!), exactly because the opening of the contacts would be by spring force, and not by the force opening the door....
Forum: LIVE PLC Questions And Answers October 31st, 2018, 11:16 AM
Replies: 21
Views: 574
Posted By JesperMP
It is not the valves that must be locked in...

It is not the valves that must be locked in place.
It is the mechanical parts that could start to move that should be locked in place.
Forum: LIVE PLC Questions And Answers October 31st, 2018, 10:52 AM
Replies: 21
Views: 574
Posted By JesperMP
If after venting compressed air energy, there is...

If after venting compressed air energy, there is a risk of movement or dropping because the pneumatic energy isnt holding things in place, there must be manually inserted safety pins or jigs, or...
Showing results 1 to 25 of 500

 
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