Omron Cpm1a -hsc

Hi All,

A have a little project with a OMRON CPM1A PLC - I am new on OMRON - I have 4 encoder to positionering an "elevator". I have read in the manual for the CMP1A that it has 1 HSC-input but 4 IR inputs for use as "interrupt", "interrupt-count" or "quick-response". Now it also says the inputs can count up to 20Hz!! Is that the definition of a Highspeed count???

The motor to be used I think have 1410 omdr. (turns pr. min.) and the encoder should be 2 puls pr. sec. That gives 47Hz!
So I cant realy use the PLC or am I wrong?

I am also a bit confused, because it says in the manual that the puls width for the the input should min. be 5ms. So can the PLC count 200Hz????

I have read in the manual for the CMP1A that it has 1 HSC-input but 4 IR inputs for use as "interrupt", "interrupt-count" or "quick-response". Now it also says the inputs can count up to 20Hz!! Is that the definition of a Highspeed count???

Click to expand...

Read a little closer. That's 20Khz. Unidirectional, not bi-directional.

The motor to be used I think have 1410 omdr. (turns pr. min.) and the encoder should be 2 puls pr. sec. That gives 47Hz!
So I cant realy use the PLC or am I wrong?

Click to expand...

That's correct for the motor, but 20Khz should handle it fine.

I am also a bit confused, because it says in the manual that the puls width for the the input should min. be 5ms. So can the PLC count 200Hz????

Click to expand...

That's when used as a standard input, not an interrupt input.

Micro PLC Interrupts and HSC @ MrPLC.com
http://forum.mrplc.com/index.php?act=Downloads&CODE=02&id=101
CPM2A Example Program for Interrupt Counters @ MrPLC.com
http://forum.mrplc.com/index.php?act=Downloads&CODE=02&id=175

I think its says 20Hz and not 20kHz?

My fault I have downloaded the wrong manual it was for a AC-input.

Sorry.

But I have some other question

I want to count up and down.

how fast can I count an a normal indput 30-50Hz??

the CMP1A supports only 1 encoder (ABZ). I dont know yet what kind of encoder they have, but if it is of (ABZ) type I will not could do the application or could I??

by using the interrupt indput I can also just use one encoder at a time, right??

Anyone know how to connect rotary encoder to CPM1A? I've tried using PRV to read the value, but i can't read the value in the memory. I used PRV (0 0 DM100). My encoder is Omron E6B2-CWZ6C. help please
Thanks!