7
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.
00
00
0
00
00
1
00
00
2
Count input
Reset input
Solenoid
Sensor
Rotary encoder
Motor
controller
Mode
Input functions
Input method
Count
frequency
Count
range
Control methods
Up/Down
00000: A-phase input
00001: B-phase input
00002: Z-phase input
Phase-difference,
4
´
inputs
20 Hz
-- 32767
to
32767
Target value control:
Up to 16 target values and interrupt
subroutine numbers can be
registered.
Zone comparison control:
Incremental 00000: Count input
00001: See note.
00002: Reset input
Individual inputs
20 Hz
0
to
65535
Zone comparison control:
Up to 8 sets of upper limit values,
lower limit values, and interrupt
subroutine numbers can be
registered.
Note
In incremental mode, this input (00001) can be used as an regular input.
CPM1A Features and Functions
Section 1-1
Summary of Contents for CPM1A-20CAR-A
Page 3: ...ii...
Page 5: ...iv...
Page 9: ...iv...
Page 29: ...14 System Configuration Section 1 2...
Page 43: ...29 Unit Components Section 2 2...
Page 65: ...51 Wiring and Connections Section 3 4...
Page 123: ...Appendix B Dimensions 2 CPM1 CIF01 90 81 21 30 205 50 56 CPM1 CIF11 90 81 21 30 205 50 61...
Page 124: ...Appendix B Dimensions 3 Dimensions with Peripheral Devices Attached Approx 90 Approx 125...
Page 125: ...Appendix B Dimensions 4...
