Quick question on OMRON CPM1A

ckchew666

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Join Date
Aug 2003
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Malaysia
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Hi,

Anybody know if CPM1A 10 points module can add expansion module?

Or only certain model support expansion (MAD01)?

I'm looking for 1AI and 1AO OMRON plc.

Thanks.
 
The CPM1A-10 and CPM1A-20 units are NOT expandable. You must use a -30 or -40 to have expansion capability. All CPM2A cpu's can be expanded.

The CPM1A-MAD01 has two analog inputs and one analog output. Be careful, this unit only offers 8 bit resolution (0-255 decimal). The CPM1A-MAD11, also two analog in and one analog output offers 0-6000 decimal resolution.

Hope this helps.
 
gtsuport said:
The CPM1A-10 and CPM1A-20 units are NOT expandable. You must use a -30 or -40 to have expansion capability. All CPM2A cpu's can be expanded.

The CPM1A-MAD01 has two analog inputs and one analog output. Be careful, this unit only offers 8 bit resolution (0-255 decimal). The CPM1A-MAD11, also two analog in and one analog output offers 0-6000 decimal resolution.

Hope this helps.

Hi,

Thx for ur info. I do not know such limitation exists.
0-255 means when I inject 4mA it'll shows 0 and when I inject 20mA the max. it'll show 255 only? If yes, then the resolution is very low. Am I right?
 
You are correct. This is a rather low resolution analog unit. The actual values will be in hex 0-FF (0-255 decimal). If you need more resolution, the CPM1A-MAD11 should do the trick.

Any other questions, just ask.
 
gtsuport said:
You are correct. This is a rather low resolution analog unit. The actual values will be in hex 0-FF (0-255 decimal). If you need more resolution, the CPM1A-MAD11 should do the trick.

Any other questions, just ask.

Thx for ur help...u r good in OMron :)
 
gtsuport: Sorry to trouble you again, looking at the cheaper model between OMRON (ZEN) & AB(PICO), what is the limitation with ZEN? Does ZEN has any analog OUTPUT (1 at least)?

PICO has built in 4 AI & 1AO. I'm soucring for the price from Rockwell.
 
Anyone know if the CPM1A-40CDR-D-V1 comes with any AC input? Becauses all the field devices are running on 110AC (push button, sensors...)

Thanks.
 
Anyone know if the CPM1A-40CDR-D-V1 comes with any AC input? Becauses all the field devices are running on 110AC (push button, sensors...)
24VDC inputs only.

Have a look at the Mitsubishi Alpha 2. It has AC inputs and analogues. Similar in size to the ZEN.
 

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