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Search: Posts Made By: parky
Forum: LIVE PLC Questions And Answers Today, 10:36 AM
Replies: 22
Views: 1,207
Posted By parky
Spot on Dabba, I thought that too, but then if...

Spot on Dabba, I thought that too, but then if the OP does not describe exactly what he wants then..... however, If he uses both limits to effectively drive the logic i.e. closed limit initiates open...
Forum: LIVE PLC Questions And Answers Today, 10:28 AM
Replies: 2
Views: 86
Posted By parky
This looks like Siemens, however, some years...

This looks like Siemens, however, some years since I used it but basically here is my thoughts on it. I assume this is a function block but without knowing the PLC type this is a guess.
L #InR ...
Forum: LIVE PLC Questions And Answers August 7th, 2020, 02:53 AM
Replies: 4
Views: 189
Posted By parky
The M0 & M1 files exist in the SLC, these are...

The M0 & M1 files exist in the SLC, these are used to transfer data from/to the Basic card so for example the print will print the text plus the data in the M register(s). It's been many years since...
Forum: LIVE PLC Questions And Answers August 6th, 2020, 03:56 PM
Replies: 22
Views: 544
Posted By parky
Here is the two versions one in IEC & compiled...

Here is the two versions one in IEC & compiled code the other is in ladder compiled code (STL), However, I cannot show the call code as I have no real PLC at the moment and the simulator does not...
Forum: LIVE PLC Questions And Answers August 6th, 2020, 03:24 PM
Replies: 22
Views: 544
Posted By parky
The IEC timer becomes a function block so needs...

The IEC timer becomes a function block so needs to return a value or bit so needs to be parameterised with all the IN/OUT variables you need, the timer instance is not an actual timer so is not...
Forum: LIVE PLC Questions And Answers August 6th, 2020, 03:12 PM
Replies: 22
Views: 544
Posted By parky
That is an interesting thing about IEC timers, I...

That is an interesting thing about IEC timers, I have no idea how the code is compiled in many PLC's, however, I do know how they are compiled in Mitsubishi. They are not actually timers (the same as...
Forum: LIVE PLC Questions And Answers August 6th, 2020, 05:11 AM
Replies: 4
Views: 845
Posted By parky
Here is the manual. it shows the connections &...

Here is the manual. it shows the connections & switch positions
http://www.lighthouseplcs.com/uploads/NJI-124B(X).pdf
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 12:10 PM
Replies: 22
Views: 1,090
Posted By parky
The old S5 had macro's so you could automate a...

The old S5 had macro's so you could automate a lot of repeated code and just change the addresses, In Mitsubishi Works you create a function block, call it as a macro although it looks like a jump to...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 12:02 PM
Replies: 10
Views: 475
Posted By parky
LOL, yes I have, It was not my code, but a system...

LOL, yes I have, It was not my code, but a system had been running for some time, I was there to do a mod on someone else's code, I did the mod & the site engineer asked me about a problem they had...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 11:55 AM
Replies: 10
Views: 475
Posted By parky
I think that goes for most posts, we often have...

I think that goes for most posts, we often have to assume the way it was intended to work, and it often means we look too deep into it when a simple solution is all that is required, however, it is...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 11:20 AM
Replies: 4
Views: 349
Posted By parky
Well Step 7 Basic is for the later controllers S7...

Well Step 7 Basic is for the later controllers S7 1200 series, the Step7 V5.6 version is for the older controllers but I believe it can program all the 300/400 series (these are effectively been...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 10:59 AM
Replies: 10
Views: 475
Posted By parky
Yes I agree, if the first instance of A < B...

Yes I agree, if the first instance of A < B requires C to be incremented, then use a TT timer so compare, if A<B AND NOT Timer then increment C and start a TT timer. There was a caveat I put in that...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 10:42 AM
Replies: 22
Views: 1,090
Posted By parky
Ahhhh. the good old PG675/685, CPM based, most...

Ahhhh. the good old PG675/685, CPM based, most IDE's of the time had shortcuts either F keys or control + keys. The one thing that would be difficult is having to add a function (AOI), there is...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 10:31 AM
Replies: 3
Views: 272
Posted By parky
I don't know about the 500/1000 series but I have...

I don't know about the 500/1000 series but I have connected an OPC server to the 3000 series, originally, these were connected via RSPower, the protocol and addresses are the same as the SLC500 so if...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 07:24 AM
Replies: 10
Views: 326
Posted By parky
Source A & B should be reals, it looks like you...

Source A & B should be reals, it looks like you are feeding them with integers, I do not know what PLC you are using but in most I have used this would cause a compile error, try converting the...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 02:42 AM
Replies: 22
Views: 1,090
Posted By parky
Peter, I still do not see the point, after all,...

Peter, I still do not see the point, after all, you are using some type of software to monitor ? why not an IDE, why complicate things. after all, the days of compiling code into machine code using a...
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 02:35 AM
Replies: 10
Views: 475
Posted By parky
I assume you being in the states you are probably...

I assume you being in the states you are probably using RSL I do not have this loaded at the moment but the logic below should give you enough information on at least one way of how to do it....
Forum: LIVE PLC Questions And Answers August 3rd, 2020, 02:05 AM
Replies: 22
Views: 1,090
Posted By parky
I really do not see the point, How do you monitor...

I really do not see the point, How do you monitor the status of the program, what benefit would it give you. I once worked on a system that although had an editor as it was truly compiled (no...
Forum: LIVE PLC Questions And Answers July 31st, 2020, 06:16 AM
Replies: 10
Views: 542
Posted By parky
The graphics should not be too much of a problem,...

The graphics should not be too much of a problem, I have had 99 blocks on a screen, each one either hidden, green or red, although this was a Scada system but in the 90's so not that much of a fast...
Forum: LIVE PLC Questions And Answers July 31st, 2020, 03:17 AM
Replies: 3
Views: 235
Posted By parky
Is the secondary a client that only uses the...

Is the secondary a client that only uses the master database, this configuration does not have it's own just the IFIX application and uses the database of the master, it could be loss of connection...
Forum: LIVE PLC Questions And Answers July 31st, 2020, 03:15 AM
Replies: 10
Views: 542
Posted By parky
I think we have a mis-understanding, what I meant...

I think we have a mis-understanding, what I meant was that it is unusual to have the tracking information in the PC, "IF" the tracking is in the PC then you would need to find out what it does (very...
Forum: LIVE PLC Questions And Answers July 30th, 2020, 03:15 PM
Replies: 10
Views: 542
Posted By parky
In most systems I have come across the data is...

In most systems I have come across the data is held in the PLC, the "Scada" just shows the animation, the reason for this is so tht the plc knows where the data is rather than the other way round,...
Forum: LIVE PLC Questions And Answers July 29th, 2020, 02:35 AM
Replies: 10
Views: 542
Posted By parky
It is unlikely that all the code in the PC...

It is unlikely that all the code in the PC controls the process, You have not told us what the platform is for the PC for example is it a bespoke compiled application or is it some known Scada system...
Forum: LIVE PLC Questions And Answers July 28th, 2020, 01:42 PM
Replies: 10
Views: 791
Posted By parky
You haven't actually stated what way the force...

You haven't actually stated what way the force will be applied, I was once involved in a shear beam testing rig, I wrote the software but had no input into the design, this had two modes,...
Forum: LIVE PLC Questions And Answers July 27th, 2020, 03:44 AM
Replies: 20
Views: 841
Posted By parky
Do you really need the I/O, for most simulations...

Do you really need the I/O, for most simulations you could use internal memory bits, sometimes this is better as you can then build in routines that simulate the real I/O, obviously, for things like...
Showing results 1 to 25 of 500

 
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