Omron CS1W-MCH71 -, Руководство по эксплуатации

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Origin Search Methods and Parameters
Section 8-3
3-level Speed in One
Direction Mode • The origin search is performed only in one direction.
• After starting the operation towards the phase-Z detection direction at Ori-
gin search feed rate, the speed will be changed to Origin search approach
speed when the Origin proximity signal input (normally open) is turned
ON. The speed will be changed to the Origin search creep speed at the
rise of the Origin determine signal input after the Origin proximity input
signal is turned OFF and the axis travels for the final travel distance to
define an origin.
• An alarm will occur if a Limit input signal is input before the Origin proxim-
ity input signal.
• When there is no Origin proximity input signal, a limit input signal can be
used instead.
8-3-2 System Parameters
The following system parameters are required to perform the origin search
operation. These system parameters are set using the Support Tool.
• Except for “Origin at power ON” mode, the origin on the machine coordi-
nate system is determined with the external input signal specified in the
parameter [P4AA06: Origin determine signal].
• After completion of an origin search, the following values remain the same
as before the execution.
• The workpiece coordinate system offset set using OFFPOS command
• The coordinate system No. set in ORIGIN/WORK command
• If an origin search is executed for an axis using an absolute encoder, the
origin on the machine coordinate system will be determined using an
external input signal.
• By specifying Origin offset value, the origin on the machine coordinate
system after an origin search can be set to the value other than zero.
(Specify zero if not necessary.)
Parameter No. Value Description
Origin search
method P4AA01 0: Origin at power ON
1: Limit reversal
2: 2-level speed in one direction
3: 3-level speed in one direction
Sets the origin search method.
Initial search direc-
tion P4AA02 0: Same as phase-Z detection
1: Opposite of phase-Z detection
Sets the origin search start direction in Limit rever-
sal mode (origin search method 1).
Phase-Z detection
direction P4AA03 0: + direction
1:
−
direction
Sets the phase-Z detection direction in the modes
(origin search methods 1,2, and 3) except for Ori-
gin at power ON mode.
Origin deceleration
method P4AA04 0: Uses origin proximity
1: Uses CW/CCW
Sets whether to use origin proximity or limit input
signal as the origin proximity signal for origin
search methods 1 and 3.
Origin determine sig-
nal P4AA06 0: Phase-Z
1: External input signal 1
2: External input signal 2
3: External input signal 3
Sets the signal that determines the origin.
Origin search feed
rate P4AA07 1 to 2147483647
Note The speed is limited by
32767 command unit/unit
scan.
Sets the 1
st
level speed of the 3-level speed origin
search.