Omron operation manual CPM1A Features and Functions, 1 CPM1A Features, Section

CPM1A Features and Functions Section 1-1

1-1 CPM1A Features and Functions

1-1-1 CPM1A Features

One-piece Construction The CPM1A CPU Units feature a one-piece construction including 10, 20, 30, or 40 built-in I/O terminals. The following three model groups are available: relay output models, sink-type transistor output models, and source-type transistor output models.

CPM1A-10CDR-j/10CDT-D/10CDT1-D CPM1A-20CDR-j/20CDT-D/20CDT1-D

(10 I/O terminals) (20 I/O terminals)

CPM1A-30CDR-j/30CDT-D/30CDT1-D CPM1A-40CDR-j/40CDT-D/40CDT1-D

(30 I/O terminals) (40 I/O terminals)

Extra I/O Capacity	Up to three Expansion I/O Units can be connected to a CPM1A-30CDR-j/
	30CDT-D/30CDT1-D or CPM1A-40CDR-j/40CDT-D/40CDT1-D CPU Unit to
	add an extra 8 or 20 I/O points for each, for a maximum of up to 100 I/O points.
Input Filter Function	The CPM1A 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.
Input Interrupts	The CPM1A-10CDR-j/10CDT-D/10CDT1-D CPU Units can handle 2 interrupt
	inputs; the CPM1A-20CDR-j/20CDT-D/20CDT1-D, CPM1A-30CDR-j/
	30CDT-D/30CDT1-D, and CPM1A-40CDR-j/40CDT-D/40CDT1-D CPU Units
	can handle 4 interrupt inputs. In addition to normal input interrupts, the CPM1A
	has a counter mode that counts high-speed input signals 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.
Interval Timer	CPM1A PCs have a high-speed interval timer which can be set from 0.5 ms to
	319,968 ms. The timer can be set to trigger a single interrupt (one-shot mode) or
	repeat scheduled interrupts (scheduled interrupt mode).
High-speed Counter	CPM1A PCs have a high-speed counter that can be used in incremental mode
	or up/down mode. The high-speed counter can be combined with input inter-
	rupts to perform target value control or zone comparison control that isn’t
	affected by the PC’s cycle time.
Pulse Output Function	The CPM1A transistor output models have an output function capable of output-
	ting a pulse of 20 Hz to 2 kHz (single-phase output).
Analog Setting Function	The CPM1A PCs have 2 analog volume controls that can be used to make
	manual analog settings.

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