Omron CJ-Series Operation Manual page 126

Built-in Outputs
Coordinate
system
Path specification
made with
instruction
(A28005) or Pulse Output 1 Origin Established
(PULS(886) or
PLS2(887)
Absolute pulse The absolute pulse specification cannot be used
specification when the origin location is undetermined, i.e.,
when the system is operating in the relative coor-
dinate system. An instruction execution error will
occur.
Operations Affecting the
Origin Status
Relative coordinate system
Origin not established:
The Pulse Output 0 Origin Established Flag
Flag (A28105) will be ON.
The following table shows the operations that can affect the origin status, such
as changing the operating mode and executing certain instructions.
The Pulse Output 0 No-origin Flag (A28005) and Pulse Output 1 No-origin
Flag (A28105) indicate whether the origin location is undetermined for the
corresponding pulse output. The flag will be ON when the corresponding
pulse output's origin is undetermined.
Current status
Operation
Operat- Switch to
ing mode RUN or
change MONITOR
Switch to
PROGRAM
Absolute coordinate system
The Pulse Output 0 Origin Established Flag
(A28005) or Pulse Output 1 No-origin Flag
Positions the system to an absolute position rela-
tive to the origin.
The number of movement pulses and movement
direction are calculated automatically from the cur-
rent position (pulse output PV) and target position.
The following example shows the number of
pulses setting = +100.
Number of pulses
Number of
movement pulses
+100
0
Target
position =
Origin
number of
pulses
Number of movement pulses = Number of pulses
setting - Pulse output PV when instruction is exe-
cuted
The movement direction is determined automati-
cally.
Pulse output PV range:
80000000 to 7FFFFFFF hex
Number of pulses setting range:
80000000 to 7FFFFFFF hex
PROGRAM mode
Origin Origin not
established established
Status "Origin not
changes to established"
"Origin not status contin-
established." ues.
--- ---
Section 5-2
Origin established:
(A28105) will be OFF.
setting
II
Pulse
+200
output PV
Current
position
RUN mode or MONITOR
mode
Origin Origin not
established established
--- ---
"Origin "Origin not
established" established"
status contin- status contin-
ues. ues.
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