Omron CJ1W-NC271 - 12-2009, Operation Manual

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Origin Search Operation
Section 8-2
Axis Parameter Area The following parameters are for the operation mode for origin searches.
d = 1860 hex + (Axis No.
−
1)
×
14 hex
* The reversal mode 3 setting for the origin search operation, the origin detec-
tion method, and the origin search preset can be used only with Position
Control Units with unit version 2.0 or later. They cannot be used with Posi-
tion Control Units with unit version 1.3 or earlier.
Note (1) Set the origin search direction of the axis parameters and Origin Search
Direction for G5-series Servo Drives (Pn822), Origin Return Mode Set-
tings for G-series Servo Drives (Pn10F) or Zero Point Return Mode Set-
ting for W-series Servo Drives (Pn816) to the same direction. Setting
different direction may result in a malfunction.
(2) When using an absolute encoder, make sure that the settings for the en-
coder type in the Axis Parameters and Operation Switch when Using Ab-
solute Encoder (Pn002.2 for W Series, Pn00B for G Series and Pn015 for
G5 Series) in the Servo Parameters match. If the settings do not match,
ORIGIN SEARCH execution will not be possible, or another malfunction
may occur.
(3) Make sure that the external input signals for origin searches (limit input
signal and origin proximity input signal) maintain a signal width no shorter
than the MECHATROLINK communications cycle. If the input signal width
is shorter than the communications cycle, the PCU is unable to detect the
input signals, and operations cannot be performed normally.
PCU's
address
Contents Setting
15 to 14 13 12 11 to 08 07 to 04 03 to 00
d+1 0 (fixed) Origin
search
preset Origin
search
direction Origin
detection
method Origin
search
operation 0 (fixed) Set the origin search operation.
Origin search direction
0: Reversal mode 1 (default setting)
1: Reverse mode 2
2: Single-direction mode
3: Reversal mode 3 (See note.)
Origin detection method (See note.)
0: With origin proximity input signal
reversal (default setting)
1: Without origin proximity input sig-
nal reversal
2: Not use origin proximity input sig-
nal
Origin search direction
0: Forward (default setting)
1: Reverse
Origin search preset (See note.)
0: Not Set (default setting)
1: Set
d+2 0 (fixed) 0 0 0 (fixed) 0 (fixed) Encoder
type 0: Incremental encoder (default setting)
1: Absolute encoder