Sysmac CPM1A-20CAR-A, Operation Manual

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1-1 CPM1A Features and Functions
1-1-1 CPM1A Features
One-piece Construction
The CPM1A CPU AC-Input Units feature a one-piece construction including 20,
or 32 built-in I/O terminals. These units are available in relay output models only.
CPM1A-20CAR-A
(20 I/O terminals)
CPM1A-32CAR-A
(32 I/O terminals)
Extra I/O Capacity
Up to three Expansion I/O Modules can be connected to a CPM1A-32CAR-A
CPU Unit to add an extra 20 I/O points for each, for a maximum of up to 92 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-20CAR-A and CPM1A-32CAR-A 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 multi-
ples.
Quick-response Inputs
Quick-response inputs can detect input signals with a pulse width as short as
5 ms regardless of their timing during the PLC cycle. Quick-response inputs and
interrupt inputs use the same input terminals.
Interval Timer
CPM1A PLCs have a high-speed interval timer which can be set from 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 PLCs 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 af-
fected by the PLC’s cycle time.
Analog Setting Function
The CPM1A PLCs have 2 analog volume controls that can be used to make
manual analog settings.
Host Link Communications
The CPM1A PLCs are compatible with the Host Link, which allows communica-
tions with personal computers. The CPM1A using the Host Link can also com-
municate with Programmable Terminal using host link commands.
An RS-232C Adapter is used for 1-to-1 communications and an RS-422 Adapter
is used for 1-to-n communications.
1-to-1 Link
A data link can be created with a data area in another CPM1A, CQM1, CPM1,
SRM1 or C200HS or C200HX/HE/HG PLC. An RS-232C Adapter is used to
make the 1-to-1 connection.
NT Link Communications
High-speed operations can be achieved by providing a direct access by con-
necting the CPM1A to the OMRON Programmable Terminal through the NT Link
Interface. An RS-232C Adapter is used for this connection.
Standard Peripheral Devices
The CPM1A uses the same Programming Consoles and SYSMAC Support
Software (SSS) as the C200H/HS, C200HX/HE/HG, CPM1, SRM1, and CQM1
PLCs.
CPM1A Features and Functions
Section 1-1