A-11
Appendices
CJ2M CPU Unit Pulse I/O Module User’s Manual
A-4 Performance Information
App
A-4-2 Pulse Output Start Time
The pulse output start time is the time required from executing a pulse output instruction until pulses are
output externally. This time depends on the pulse output instruction that is used and operation that is
performed.
The pulse output change response time is the time for any change made by executing an instruction
during pulse output to actually affect the pulse output operation.
Note: The pulse control cycle is set in the PLC Setup to either 1 ms or 4 ms.
A-4-2 Pulse Output Start Time
Pulse output instruction Startup time
SPED(885), continuous 23 µs
SPED(885), independent 24 µs
ACC(888), continuous 31 µs
ACC(888), independent, trapezoidal 33 µs
ACC(888), independent, triangular 39 µs
PLS2(887), trapezoidal 35 µs
PLS2(887), triangular 42 µs
IFEED(892) 34 µs
A-4-3 Response Times of Pulse Output Changes
Pulse output instruction Change response time
INI(880,) immediate stop 10 µs + 1 pulse output time
SPED(885), immediate stop 14 µs + 1 pulse output time
ACC(888), deceleration stop Between 1 and 2 pulse control cycles
PLS2(887), deceleration stop
SPED(885), speed change
ACC(888), speed change
PLS2(887), target position change in reverse
direction
PLS2(887), target position change in same
direction at same speed
PLS2(887), target position change in same
direction at different speed
Instruction execution
Pulse output
Startup time
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