905
High-speed Counter/Pulse Output Instructions Section 3-21
â– Origin Return (Bits 12 to 15 of C = 1 hex)
ORG(889) starts outputting pulses using the specified method at the Origin
Return Initial Speed (1 in diagram). Pulse output is accelerated to the Origin
Return Target Speed using the Origin Return Acceleration Rate (2 in diagram)
and pulse output is continued at constant speed (3 in diagram). The decelera-
tion point is calculated from the number of pulses remaining to the origin and
the deceleration rate and when that point is reached, the pulse output is
decelerated (4 in diagram) at the Origin Return Deceleration Rate until the
Origin Return Start Speed is reached, at which point pulse output is stopped
at the origin (5 in diagram).
Flags
A
B
C
D
E
F
Pulse frequency
Origin search
initial speed
Origin search
high speed
Origin search
proximity speed
ORG(889) executed.
Origin Proximity Input Signal
Stop
Origin Input Signal
Tim
Origin search
acceleration rate
Origin search
deceleration rate
A
B
C
D
E
Pulse frequency
ORG(889) executed.
Origin return
target speed
Origin return
deceleration rate
Stop
Time
Origin return
initial speed
Origin return
acceleration
rate
Name Label Operation
Error Flag ER ON if the specified range for P or C is exceeded.
ON if ORG(889) is specified for a port during pulse output
for SPED(885), ACC(888), or PLS2(887).
ON if ORG(889) is executed in an interrupt task when an
instruction controlling pulse output is being executed in a
cyclic task.
ON if the origin search or origin return parameters set in
the PLC Setup are not within range.
ON if the Origin Search High Speed is less than or equal
to the Origin Search Proximity Speed or the Origin Search
Proximity Speed is less than or equal to the Origin Search
Initial Speed.
ON if the Origin Return Target speed is less than or equal
to the Origin Return Initial Speed.
ON if an origin return operation is attempted when the ori-
gin has not been established.
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