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1-1 CPM1 Features and Functions
1-1-1 CPM1 Features
One-piece Construction The CPM1 is a one-piece PC with 10, 20, or 30 I/O terminals built into the CPU
Unit.
CPM1-10CDR- (10 I/O Terminals)
CPM1-20CDR- (20 I/O Terminals)
CPM1-30CDR-(-V1) (30 I/O Terminals)
Extra I/O Capacity Either one Expansion I/O Unit or one Analog I/O Unit can be connected to a
CPM1-10CDR-/20CDR-/30CDR- CPU Unit. Also, up to three Expansion
I/O Units and/or Analog I/O Units can be connected in any combination to a
CPM1-30CDR--V1 CPU Unit.
Analog I/O Unit The CPM1A-MAD01 Analog I/O Unit can be connected as part of a CPM1 PC to
provide two analog inputs and one analog output. (Up to three Analog I/O Units
can be connected at the same time.) Refer to Section 6 Analog I/O Unit for
details on the Analog I/O Unit.
Input Filter Function The CPM1 is equipped with a filter function to prevent incorrect operation
caused by chatter or noise in the input signal. The user can select an input time
constant of 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms, or 128 ms.
Low-maintenance Design Flash memory provides memory backup without a battery.
Conforms to EC Directives The CPM1 PCs conform to EC directives (EMC and low-voltage directives), so
they can be incorporated in equipment destined for the EC. Contact your
OMRON representative for more details.
Input Interrupts The CPM1-10CDR- PCs can handle 2 interrupt inputs; the CPM1-20CDR-
and CPM1-30CDR- PCs can handle 4 interrupt inputs. In addition to normal
input interrupts, the CPM1 has a counter mode that counts high-speed input sig-
nals and triggers interrupts at fixed count multiples.
Quick-response Inputs Quick-response inputs can detect input signals with a pulse width as short as
0.2 ms regardless of their timing during the PC cycle. Quick-response inputs
and interrupt inputs use the same input terminals.
CPM1 Features and Functions Section 1-1
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