new to PLCs

Am a journey level electrician who has not kept up with technology. Need to learn PLCs. Have siemens S 7 200. Have read the manual but it is over my head at this stage (put me in first grede). Have read Melores PLC Tutor it made sense and I understand it. Ready to move on to next stage (second grade ??). Any recommendations on books for PLCs in general and specifically Siemens or Allen Bradley??

Thanks for help
Dan Bentler

hello,
i recommand you see manuals.

if you are using siemens S7 200 series plc
then first study Input, OUTPUT addressing
Input I0.0 ......I0.7
Output Q0.0......Q0.7 dpennds upon Modules

Internal Flags M0.0 to M0.7 (group of 8 bits)
up to M32.7
Timers T0 to T32 depens upon PLC type
Counter C1....
Functions ADD, SUB...........
first do Simple Prog

i0.0 q0.0
| |--------------()
adding interlock
i0.0 i1.0 q0.0
| |--|/|------------()

that way if you still find diffucuelt mail to me

Thanks
sandeep patil

Are you using Step 7 MicroWin 32?
If yes did you read the manual that comes with the documentation CD?

Check out this site

http://www.plcs.net/contents.shtml

IMHO there is nothing better for learning AB than "prologix" found at the learning pit.com (I think thats the address).

They have a free demo for 30 days. You can buy the software for around $30.00 after that. It is as close as you can get to the real thing.

This is a Siemens beginner lesson for programming their plcs: http://www.sea.siemens.com/step/pdfs/plc_3.pdf

Siemens online Basics to PLC's: http://www.sea.siemens.com/step/templates/lesson.mason?plcs:1:1:1

That will also take you to the Siemens training section, in the US they have their main facility in East Tennessee but also offer classes in most major cities.

If you can talk to your local Siemens rep then they have a CD (cant find mine so not sure exact title) but its something like Getting Started with S7 and offers training etc. Hopefully Jesper, S7Guy or one of the other Siemen gurus can tell you what that cd is.

The Learning Pit offers software for training on AB RSLogix: http://www.thelearningpit.com/

There is alot more but that should get you started.