Omron CX-one Lite

shane_bac · Feb 4, 2015

Hi all, I have been asked to program a simple sequence using the CX-one Lite package. I have been using Siemens step 7 TIA for the last year and have found it to e quite different.

First off following the manual with the program example i do not have the option to edit the rack to add my expansion module to my CP1E 40 I/O?

Secondly ive noticed that al the memory allocations are some wht different, am I right in thinking that the work area is pretty much the same as the memory_bit in siemens?

Any help would be grateful please.

BobB · Feb 6, 2015

Heaps of options. The CP1L is fixed addressing - expansions just follow on. As far as memory goes W is a work area or you can just use CIO area that is not being used by real I/O. H is memory retentive, D is registers and they are retentive.

gclshortt · Feb 6, 2015

Here is the two manuals for programming:
http://industrial.omron.com.br/uploads/arquivos/CP1E_2009_W480-E1-01_USERMANUAL.pdf
http://www.omronkft.hu/nostree/pdfs/plc/cp1/w483-e1-05_cp1e-cpu_instmanual.pdf

Indirect addressing is one way of programming sequences. In the Omron PLC it is done in the DM area of memory and written as a *D to indicate indirectly.

Hope this helps,
Garry
http://www.accautomation.ca

shane_bac · Feb 9, 2015

Thank you. Would i be right in thinking that i would use (W) for memory bits which are non retentive and (H) for memory bits which are retentive e.g a step in an automatic sequence that need to be remembered if power is lost? Would (D) then be used for storing such things amount of full cycles a machine has done for example?

BobB · Feb 9, 2015

Yes and no - I normally do not even bother with W but just use CIO. D area is normally used for calcs, setting up various cards, Modbus comms - heaps of things.

shane_bac · Feb 9, 2015

I have chosen not to use the CIO for memory bits as i have an expansion card and i dont want to cross any memory with I/O

BobB · Feb 9, 2015

That is fine but you have over 6000 channels of CIO to use.

shane_bac · Feb 11, 2015

I find it easier as new user and a beginner to PLC programing, if it has the work area memory assigned for a particular purpose it seems sensible to use it?

osmanmom · Feb 11, 2015

what type of task you need to program ?

shane_bac · Feb 11, 2015

Its a 20 step process with yoke poke and two hand start for machine movements

osmanmom · Feb 11, 2015

give more info then members will give more input

shane_bac · Feb 18, 2015

I am looking for the best way of implementing the N/C input from the two hand start safety relay for the program. I have put the N/C logic in front of each of the output steps e.g when step 4 is complete and the safety relay is activated the output will be activated. The problem with this is that if i lose power to the N/C contact then it will think the safety relay has been activated?
This is protected by the fact it is wired to Category 4 with constant monitering but i still want the logic to be correct.

osmanmom · Feb 18, 2015

snap shot your logic on this section

the PLC and Safety power must same source/point.

https://www.ia.omron.com/products/family/2937/download/catalog.html

https://www.ia.omron.com/data_pdf/cat/g9sp_f090-e1_9_2_csm2603.pdf?id=2937

Omron CX-one Lite

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