Omron CJ1M-CPU21, Operation Manual

Page: 188 / 267

159
Built-in Outputs Section 6-2
Movement Direction when
Using Absolute Pulse
Specification When operating with the absolute pulse specification, the movement direction
is selected automatically based on the relationship between the pulse output
PV when the instruction is executed and the specified target position. The
direction (CW/CCW) specified in an ACC(888) or SPED(885) instruction is not
effective.
Procedure
Single-phase Pulse Output without Acceleration/Deceleration
The number of output pulses setting cannot be changed during positioning.
■ PULS(886) and SPED(885)
Instruc-
tion exe-
cution Origin search
performed by
ORG(889) --- --- Status
changes to
“Origin
established.” Status
changes to
“Origin
established.”
PV changed
by INI(880) --- --- “Origin
established”
status contin-
ues. Status
changes to
“Origin
established.”
The Pulse Output Reset
Bit (A54000 or A54100)
goes from OFF to ON. Status
changes to
“Origin not
established.” “Origin not
established”
status contin-
ues. Status
changes to
“Origin not
established.” “Origin not
established”
status contin-
ues.
Current status PROGRAM mode RUN mode or MONITOR
mode
Operation Origin
established
Origin not
established
Origin
established
Origin not
established
Determine the pulse output
method and port.
•
CW/CCW method
Pulse output 0 uses OUT0 (CIO 296100) and OUT1 CIO 296101).
Pulse output 1 uses OUT2 (CIO 296102) and OUT3 CIO 296103).
•
Pulse + direction method
Pulse output 0 uses OUT0 (CIO 296100) and OUT2 (CIO 296102).
Pulse output 1 uses OUT1 (CIO 296101) and OUT3 (CIO 296103).
The same pulse output method must be set for both pulse
output 0 and pulse output 1.
Wire the outputs.
Power supply for outputs: 24 V DC
PLC Setup settings
•
Enable/disable the origin search function. Set the
various origin search parameters if the origin search
function is enabled.
The Origin Search Function Enable/Disable setting for
pulse outputs 0 and 1 is in the rightmost digit (bits 00 to
03) of Programming Console addresses 256 and 274,
respectively.
Ladder program
•
PULS(886): Specify port number and set the number of
output pulses.
•
SPED(885): Specify port number and set the output
method (CW/CCW method or Pulse + direction method)
and pulse output control without acceleration/deceleration.
•
INI(880): Specify port number and stop pulse output when
necessary.
•
PRV(881): Specify port number and read pulse output PV
when necessary.