I/O Specifications - Omron CPM1A Operation Manual

Specifications

2-1-3 I/O Specifications

CPU Unit Input Specifications
Item
Input voltage
Input impedance
Input current
ON voltage
OFF voltage
ON delay
OFF delay
Circuit configuration
The data stored in flash memory will not be lost even if power remains off for a
period exceeding the data backup period, because the data stored in flash
memory will be read to the CPU Unit when the CPM1A is turned on.
If the power is turned off without changing the mode from PROGRAM mode to
RUN or MONITOR mode after having made changes in the data that is backed
up in flash memory, the changes will not be written to flash memory. If the power
is then left off for more than 20 days (at 25_C), the changes (i.e., the contents of
the RAM) will be erased and the data values will become undefined.
Either switch the CPM1A to RUN or MONITOR mode, or turn off and on power to
the CPM1A after changing from a Programming Device any data that is backed
up in flash memory. This data includes the user program, read-only DM area
(DM 6144 to DM 6599), and the PC Setup (DM 6600 to DM 6655).
+10%
24 VDC /
–15%
IN00000 to IN00002: 2 kΩ; other inputs: 4.7 kΩ
IN00000 to IN00002: 12 mA typical; other inputs: 5 mA typical
14.4 VDC min.
5.0 VDC max.
1 to 128 ms max. Default: 8 ms (see note.)
1 to 128 ms max. Default: 8 ms (see note.)
Note Figures in parentheses are for IN00000 to IN00002.
Note Using the PC Setup, 1, 2, 4, 8, 16, 32, 64, or 128 ms can be selected. When
IN00000 through IN00002 are used as high-speed counter inputs, the delays
are as shown in the following table.
Input
IN00000 (A-phase)
IN00001 (B-phase)
IN00002 (Z-phase)
The minimum delay is as follows.
Increment Mode (5 kHz Max.)
A phase
Specification
IN
4.7 kΩ
IN
(2 kΩ)
820 Ω
(510 Ω)
COM
Increment mode
5 kHz
Normal input
ON: 100 µs min.; OFF delay: 500 µs min.
200 µs min.
ON
OFF
90 µs
min.
Section 2-1
Input
LED
Internal
Circuits
Differential phase mode
2.5 kHz
90 µs
min.
25