Omron CJ - 09-2009 Operation Manual page 642

CJ1M CPU Unit Built-in I/O Specifications
High-speed Counter Inputs (IN6 to IN9)
When 60 kHz is set.
When 100 kHz is set.
594
24-V DC Input
Phase-A/Phase-B encoder input, Single-phase
60-kHz pulse input with 50% duty ratio
Rise time and fall time: 3.0 µs max.
16.6 µs min.
8.3 µs min. 8.3 µs min.
ON
50%
OFF
3 µs max. 3 µs max.
Phase-A/Phase-B encoder input, Differential-
phase 30-kHz pulse input
Maintain a spacing of 4.0 µs min.
between phase-A/phase-B transitions
33.3 µs min.
ON
50%
OFF
ON
50%
OFF
T1 T2 T3 T4
T1, T2, T3, and T4: 4.0 µs min.
Count operation cannot be assured above
60 kHz.
Phase-Z encoder input (IN2 and IN3)
Maintain an ON time of 30 µs min.
and an OFF time of 150 µs min.
150 µs min.
ON
50%
30 µs min.
OFF
Line Driver Input
Phase-A/Phase-B encoder input, Single-phase
60-kHz pulse input with 50% duty ratio
16.6 µs min.
8.3 µs min. 8.3 µs min.
ON
50%
OFF
Phase-A/Phase-B encoder input, Differential-
phase 50-kHz pulse input
Maintain a spacing of 4.0 µs min.
between phase-A/phase-B transitions
33.3 µs min.
ON
50%
OFF
ON
50%
OFF
T1 T2 T3 T4
T1, T2, T3, and T4: 4.0 µs min.
Single-phase 100-kHz pulse input with
50% duty ratio
10.0 µs min.
5.0 µs min. 5.0 µs min.
ON
50%
OFF
Differential-phase 50-kHz pulse input
Maintain a spacing of 2.5 µs min. between Phase
A/Phase B transitions
20.0 µs min.
ON
50%
OFF
ON
50%
OFF
T1 T2 T3
T1, T2, T3, and T4: 2.5 µs min.
Phase-Z encoder input (IN2 and IN3)
Maintain an ON time of 30 µs min.
and an OFF time of 150 µs min.
30 µs min. 150 µs min.
ON
50%
OFF
Appendix B
T4