Omron CP1H CPU Operation Manual page 282

Pulse Outputs
Pulse output
specified in
PULS(886) or
PLS2(887
The No-origin Flag will be ON in this case.
Absolute pulse The absolute pulse specification cannot be
specification used when the origin location is undetermined,
i.e., when the system is operating in the relative
coordinate system. An instruction execution
error will occur.
Operations Affecting the Origin Status (Established/Not Established Status)
248
Relative coordinate system
Origin not established:
The following table shows the operations that can affect the origin status (ori-
gin established or no-origin), such as changing the operating mode and exe-
cuting certain instructions.
The No-origin Flag will be ON when the corresponding pulse output's origin is
not established and OFF when the origin is established.
Current status
Operation
Operat- Switch to
ing mode RUN or
change MONITOR
Switch to
PROGRAM
Coordinate system
Absolute coordinate system
Origin established:
The No-origin Flag will be OFF in this case.
Positions the system to an absolute position rel-
ative to the origin.
The number of movement pulses and move-
ment direction are calculated automatically from
the current position (pulse output PV) and target
position.
The following example shows the number of
pulses setting = +100.
Number of pulses
setting
Number of
movement pulses
+100
+200
0
Target
position =
Origin
number of
pulses
setting
Number of movement pulses = Number of
pulses setting - Pulse output PV when instruc-
tion is executed
The movement direction is determined automat-
ically.
Pulse output PV when instruction is executed =
Number of pulses setting
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 5-3
II
Pulse
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.