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Search: Posts Made By: JesperMP
Forum: LIVE PLC Questions And Answers Today, 03:41 AM
Replies: 5
Views: 159
Posted By JesperMP
Describe a bit more about the existing S7-400 and...

Describe a bit more about the existing S7-400 and its existing DP system. "it already has a DP connection" tells me nothing.
Describe what the new connection between the existing S7-400 and the new...
Forum: LIVE PLC Questions And Answers Yesterday, 07:47 AM
Replies: 5
Views: 159
Posted By JesperMP
He wrote that the S7-400 is a DP master. If it...

He wrote that the S7-400 is a DP master.
If it can be avoided, I recommend to not make a system that is dependant on Profibus DP.

It would be nice if the OP described exactly what he needs to...
Forum: LIVE PLC Questions And Answers Yesterday, 05:39 AM
Replies: 5
Views: 159
Posted By JesperMP
Add a PN CP to the S7-400 rack. There are other...

Add a PN CP to the S7-400 rack. There are other methods, but I would not go via DP if it can be avoided.
Apart from that, if the connection from the S7-1500R/H system has anything to do with...
Forum: LIVE PLC Questions And Answers Yesterday, 04:40 AM
Replies: 14
Views: 457
Posted By JesperMP
We have two versions of the disc. One for fast...

We have two versions of the disc.
One for fast conveyors with the actuating steel insert in a half-moon - like the one you describe.
Another for slow conveyors with the many steel inserts over the...
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 09:59 AM
Replies: 14
Views: 457
Posted By JesperMP
What does it cost ? We manufacture something...

What does it cost ?
We manufacture something similar, just a plastic disc with some steel inserts to trigger a nearby prox. I imagine that it cost less to buy a finished unit rather than...
Forum: LIVE PLC Questions And Answers February 23rd, 2021, 06:01 AM
Replies: 6
Views: 288
Posted By JesperMP
You never answered this: If the data being...

You never answered this:

If the data being received are already formatted as a string, then you dont have to convert anything.

It would be illogical to transfer as array of bytes. The partner...
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 10:27 AM
Replies: 6
Views: 164
Posted By JesperMP
Come on, it should be clear from just...

Come on, it should be clear from just investigating the manual for the module.
Siemens actually have pretty good block diagrams, including alternative connection methods for 2-wire, 4-wire, current,...
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 10:04 AM
Replies: 6
Views: 164
Posted By JesperMP
Havent used the 6ES7331-7NF00-0AB0. According to...

Havent used the 6ES7331-7NF00-0AB0. According to its block diagram, it is for 8 voltage inputs. There are conveniently placed 250 ohm shunt resistors on the same card, for converting a current signal...
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 05:00 AM
Replies: 4
Views: 276
Posted By JesperMP
I wouldnt guess. Get the exact type no of the...

I wouldnt guess.
Get the exact type no of the device and investigate its technical documentation.
Forum: LIVE PLC Questions And Answers February 22nd, 2021, 03:15 AM
Replies: 4
Views: 276
Posted By JesperMP
SOV ? Soft IO ? Please describe your system...

SOV ?
Soft IO ?
Please describe your system in much greater detail.
Forum: LIVE PLC Questions And Answers February 19th, 2021, 05:53 AM
Replies: 37
Views: 1,737
Posted By JesperMP
Regarding the placement of VFDs. VFDs generate...

Regarding the placement of VFDs.
VFDs generate heat and are also heat sensitive themselves. They may be rated to be able to sustain a high temperature, but that doesnt mean that you can operate...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 05:44 AM
Replies: 37
Views: 1,737
Posted By JesperMP
We use exactly the same. If the brand of wire...

We use exactly the same.
If the brand of wire duct do not have these retainers, a trick is to cut the covers into sections not longer than 30 cm or so. Instead of having to open a whole duct of a...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 05:25 AM
Replies: 12
Views: 17,926
Posted By JesperMP
So he sent you the S5 and S7 programs ? Yeah,...

So he sent you the S5 and S7 programs ?
Yeah, even with a DP/DP Coupler, the data has to be mirrored 1-to-1 on both sides.
Another thing, does he need to coordinate the bus parameters ? Or do the...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 04:49 AM
Replies: 12
Views: 17,926
Posted By JesperMP
If Jim managed to get an MC masterdrive attached...

If Jim managed to get an MC masterdrive attached as slave to the IM308C via a gsd file, I dont see why it shouldnt be possible with a 315 as DP slave. Maybe the setup of the 315 as DP slave wasnt...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 04:00 AM
Replies: 6
Views: 468
Posted By JesperMP
I want to explain that by trapping air in a...

I want to explain that by trapping air in a cylinder in a situation when a maintenance person can reasonably expect there to be no pressure presents several risks.
1. By removing a hose from a...
Forum: LIVE PLC Questions And Answers February 19th, 2021, 03:31 AM
Replies: 6
Views: 468
Posted By JesperMP
The 'other' measures you mention later can negate...

The 'other' measures you mention later can negate the need for blocking the centre venting port.
We prefer that in a maintenance situation all energy is removed before accessing the moving parts. ...
Forum: LIVE PLC Questions And Answers February 18th, 2021, 07:37 AM
Replies: 6
Views: 468
Posted By JesperMP
I guess that scenario is only possible if 2V1 is...

I guess that scenario is only possible if 2V1 is commanded to change state to the retracted position, and then immediately the air supply is cut via the safet valves so the cylinder does not have...
Forum: LIVE PLC Questions And Answers February 18th, 2021, 04:13 AM
Replies: 12
Views: 471
Posted By JesperMP
OPC UA is supported: ...

OPC UA is supported:
https://support.industry.siemens.com/cs/de/en/view/109741042
List price is approx 200
Forum: LIVE PLC Questions And Answers February 17th, 2021, 10:20 AM
Replies: 12
Views: 471
Posted By JesperMP
For Siemens IPCs there is a product called...

For Siemens IPCs there is a product called Diagmonitor which amongst other things can publish PC diagnostics data to OPC UA:...
Forum: LIVE PLC Questions And Answers February 16th, 2021, 11:13 AM
Replies: 7
Views: 309
Posted By JesperMP
You cant use SWAP on an entire structure in one...

You cant use SWAP on an entire structure in one go. It only works on WORDs or DWORDs
You could arrange the data as an ARRAY of WORDs (since in one direction it is an uneven no of words). And then...
Forum: LIVE PLC Questions And Answers February 16th, 2021, 03:58 AM
Replies: 7
Views: 309
Posted By JesperMP
I am guessing that what you are saying that if...

I am guessing that what you are saying that if the CPU sends a command word with the wrong byte order to the device, the device then responds with all zeros.

To swap bytes:
In STL you can use...
Forum: LIVE PLC Questions And Answers February 15th, 2021, 09:55 AM
Replies: 11
Views: 576
Posted By JesperMP
You can have panels that are relatively large,...

You can have panels that are relatively large, but contain nothing but terminals for distributing signals for example.

A box usually has a lid or door that is fastened by screws, and a panel...
Forum: LIVE PLC Questions And Answers February 15th, 2021, 06:25 AM
Replies: 25
Views: 1,254
Posted By JesperMP
Amen. I think this is a big concern. I am...

Amen.

I think this is a big concern. I am not for that job tasks should be kept as they are only for the sake of keeping jobs. If this was a policy, we would all be working hard in the fields, the...
Forum: LIVE PLC Questions And Answers February 15th, 2021, 06:00 AM
Replies: 25
Views: 1,254
Posted By JesperMP
I occasionally get into heated arguments with...

I occasionally get into heated arguments with people that believe that automation take away jobs. I usually argue that automation remove the bad jobs i.e. the hard, repetitive, poluted jobs and...
Forum: LIVE PLC Questions And Answers February 15th, 2021, 03:28 AM
Replies: 6
Views: 487
Posted By JesperMP
It appears that you have started another thread...

It appears that you have started another thread about the same topic.
In that thread, Petrozawodsky posted this:
So it seems that IBA requires that the PLC sends data, which probably require that a...
Showing results 1 to 25 of 500

 
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