alan brady PLC's

[jellen]

HI

Ive got a possible start as a maintenance elect, however, it asks for a basic understanding of PLC's.

I havent touched plcs for some years and would like some advice from the people who have, just enough to get me started again .

any help much appreciated.

James

 

[Andy Smith]

HI

Ive got a possible start as a maintenance elect, however, it asks for a basic understanding of PLC's.

I havent touched plcs for some years and would like some advice from the people who have, just enough to get me started again .

any help much appreciated.

James

Ask away may be able to help but more into Siemens now,

 

[Notsosmart]

Hi James, Don't you mean Allen Bradley?

What do you need to know?

Very basics can range from physical layout; Power supply, Processor & I/O cards etc. ~ & connection thereof
Then reading the programme; Ladder logic, function blocks etc. ~ also reading the programme in a live sitution which will then lead to fault diagnosis of the machine (this is probably what you need).
(If you have a good controls background & understand relay logic then ladder logic will be a cinch) This is generally the requirement as far as maintenance is concerned but the test of knowledge is sometimes asking you to write a basic traffic light programme.

Slightly more complicated will be altering a programme. (you will need an understanding of the application of the machine & processes around it).
This where my expertise drys up!!

Even more complicated will be creating a programme from scratch where-upon you need full application knowledge. (Not recomended for a novice as it may become expensive at the commissioning stage)
I have seen a reasonably experienced guy mash up a prototype body in Land-rover (Corporal Jones springs to mind; Oops I've just given my advancing years away) anyway although not best pleased what could they say; pushing £1m bodies through uncommissioned areas of track

 

[jellen]

as far as i konw its more a case of altering permaiters for the machines themselves, dont think theres any new installation work regarding the plc's.....this is one area i can't blag without a little knowledge

also can anyone recomend a good course to go on regarding plc training, or is it manufacturer specific?

 

[silva.foxx]

.....this is one area i can't blag without a little knowledge

also can anyone recomend a good course to go on regarding plc training, or is it manufacturer specific?

An area that you shouldn't blag...we're talking machine brain-surgery here. I was fortunate to find an AB course at my local college where I studied for the final two of a three year course. I had enough knowledge and experience to skip the first year so the tutor said.

The course was on the AB slc500 using RSLogix 500. AB comes under Rockwell Automation. I'm more Siemens S5/S7 now.

MicroLogix, SLC500 and PLC-5 are classed as PLCs (Programmable Logic Controllers)- RSLogix500 software and, of course, the RSLinx comms software

CompactLogix, ControlLogix are classed as PACs (Programmable Automation Controllers) -RSLogix5000 (RSL5K) plus RSLinx.

PACs are more complex than PLCs and far more advanced for control algorithms and high-speed processing.

The biggest pain in the hoop with the AB is getting linked up to the plc via RSLinx.

Have a look at these websites / forums:

Your Personal PLC Tutor - Learn PLC Programming Here. FREE

THE PLCMAN

MrPLC.com - Allen Bradley, GE, Omron & Mitsubishi PLC discussion boards

http://www.thelearningpit.com

Good luck.

 

[jellen]

An area that you shouldn't blag...we're talking machine brain-surgery here. I was fortunate to find an AB course at my local college where I studied for the final two of a three year course. I had enough knowledge and experience to skip the first year

The course was on the AB slc500 using RSLogix 500. I'm more Siemens S5/S7 now.

Have a look at these websites / forums:

Your Personal PLC Tutor - Learn PLC Programming Here. FREE

THE PLCMAN

MrPLC.com - Allen Bradley, GE, Omron & Mitsubishi PLC discussion boards

Good luck.

Think im gona need more than luck

thanks for those links, i will check them out

 

[silva.foxx]

James

I had edited the above post prior to your reply. Thanks for the thanks.

Do you know what AB stuff you'll need info on?


Allen Bradley's PLC Programming Handbook | PLCdev


Regards
s.f

 

[jellen]

Im not sure at the moment, got the interview on wednesday so will have more of an idea about their exact requierments.

 

[Andy Smith]

Hi silvafox. another siemens man yipee, just doing a big installation at min maybe i can pick your brains as i go along, takes a long time to learn this stuff but i forget it all to quick

Cheers for now.


Jellen

If its just parameters your altering its not to bad, just get to know the software etc. sure we can advice if needed cheers

 

[jellen]

Hi silvafox. another siemens man yipee, just doing a big installation at min maybe i can pick your brains as i go along, takes a long time to learn this stuff but i forget it all to quick

Cheers for now.


Jellen

If its just parameters your altering its not to bad, just get to know the software etc. sure we can advice if needed cheers

Will you come and fix the machine if i kill it

 

[Andy Smith]

Will you come and fix the machine if i kill it

Were is it !

 

[silva.foxx]

Hi silvafox. another siemens man yipee, just doing a big installation at min maybe i can pick your brains as i go along, takes a long time to learn this stuff but i forget it all to quick

Andy... I'd love to help but be warned, I'm no guru but I'd really do my bestest. Besides I have the S7 bible at my fingertips - 'Step 7 in 7 Steps' amongst all the other clutter dredged up off the net!

My current place is predom. Siemens, with a couple of AB and Keyence knocking about. Lots of Purple String linking between panels and areas plus a little AS-i which I've found myself tinkering with quite often.

Kindest regards
s.f

 

[Andy Smith]

Andy... I'd love to help but be warned, I'm no guru but I'd really do my bestest. Besides I have the S7 bible at my fingertips - 'Step 7 in 7 Steps' amongst all the other clutter dredged up off the net!

My current place is predom. Siemens, with a couple of AB and Keyence knocking about. Lots of Purple String linking between panels and areas plus a little AS-i which I've found myself tinkering with quite often.

Kindest regards
s.f

Cheers done a reasonable amount myself but been a couple of years now and you know what its like use it or loose it !