cpm1a

cavusogullari · Dec 23, 2004

i have recently worked on a cpm1a-30 model plc. it has 12 output addresses that are between 01000 to 01007 and 01100 to 01103. but in its program there are 18 output addresses. and 01101, 01102 and 01103 adresses are hadn't been used. instead 00800 - 00806 and 01200 01201. how this could be? and what are input and output addresses of cpm1a-30 plc?

p.s: all of plc's output points are connected and there is no i/o expansion unit.

ArikBY · Dec 23, 2004

Omron CPM address work like that:
Inputs
0.0-0.11
1.00-1.05 CPM30
1.00-1.11 CPM40-CPM60
2.00-2.11 CPM60
Outputs
10.00-10.07 Cpm30 Cpm 40 Cpm60
11.00-11.03 Cpm30
11.00-11.07 CPM40-CPM60
12.00-12.07 CPM 60

Internal relay start from 200.00
if you use for example 11.08 nothing happen it will work like internal relay.
The expansion start as the folow word
for CPM30 expansion unit 12I 8O Inputs 2.00-2.11 Ooutputs 12.00-12.07

Take a look on the book you have detailed memory mapping.

Good Luck

cavusogullari · Dec 23, 2004

thanks for your help ArikBY.
but adresses are not only my problem. 011.01 is connected to a part of a machine.. 011.02 and 011.03 are also connected to other parts. but in ladder diagram of program ,that is in plc, these addresses are not being used. so i suspect that if there is some other adresses that i didn't know. otherwise how could this happen. i mean there is nothing about these adresses in plc program but they are working properly.
i send the program as an attachment. you could examine it.

ArikBY · Dec 23, 2004

Far as I saw your program use this adress.
Use Ctrl F (find) type 11.01 press go to the top then find next.
It will show you all the contacts and the coil.
You can also use cross reference (Block Cross reference)
here you can see if the contact in use and where.

ArikBY · Dec 23, 2004

BTW

Your program use address which is noy physically exist like 11.09
it behave like internal relay.

cavusogullari · Dec 23, 2004

yes you are right but they are using fo
keep function. it is not a out put address. is it?

BobB · Dec 23, 2004

Keep is a function that can be used on internal relays OR outputs. It behaves the same way with both ie latch - unlatch.

Omron PLCs are just like a bg sheet of I/O. They do not use I, Q, X or Y, just numbers. You really have to use the manual to find the I/O mapping and anything that is not external I/O can be used as internal I/O.

cavusogullari · Dec 24, 2004

yes, but manual doen't answer my question. my problem is that. 11.01. 11.02 and 11.03 are controlling vertical saw, horizantal saw, and hidrolic systems. those are connected to 11 ch. com 01, 02 and 03. according to my knowledge adresses of those points are 11.01, 11.02 adn 11.03. am i wrong? in the program there is no output by these adresses. so how could this plc controls saws and hidrolics.

BobB · Dec 24, 2004

Are they in a word instruction or a shift5 register?

Post your program file and one of us will have a look,

Jay Anthony · Dec 24, 2004

Keep is a function that can be used on internal relays OR outputs. It behaves the same way with both ie latch - unlatch

Listen to the masters here. They are trying to tell you that OUT coils are not the only way to turn on an output. KEEP is just an OUT coil with two input lines. The top line turns it on. The bottom line turns it off.

cavusogullari · Dec 25, 2004

i have sent the program file before. you can find it on the link above . take look and please tell me all the output and input addresses in the program. i have no problem about keep instruction. i know how it works

thanks for your attention.

ArikBY · Dec 25, 2004

All of this outputs trun on by KEEP function.
Read carfully what I wrot above.
Cross reference can show you what in use in the program.
Find can show each point.
Bob is write output can be trun on by word command but it is not in your case.

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