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9-3
Section
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9-3-2 Command Settings
ORIGIN SEARCH (Word m+1/m+5, bit 02) (X/Y axis)
Wd m+1
Bit 02
ORIGIN SEARCH
Origin search operation begins with rising edge when this bit turns ON.
9-3-3 Executing an Origin Search
The origin search operation establishes the absolute mechanical origin. The
relationships between mode numbers and operations are explained below.
Both the origin signal and the proximity signal are set as N.O. contacts (X axis:
2021; Y axis: 6021). N.C. contacts are not explained here.
Mode 0
The origin’s response time is 1 ms. Open collector signals such as sensors are
connected to terminals 10 and 11 (for the X axis) and 32 and 33 (for the Y axis).
Refer to
Section 3 Wiring
. There are six different search patterns in Mode 0, as
shown in the following table, according to how the origin input and origin proximi-
ty input are received.
Search Patterns
Pattern
Conditions for receiving input
Search operation from
i i
Remarks
Origin proximity
Origin
p
origin
0
Rising edge or level
Falling edge
Completed only at origin.
Possible even without
proximity signal.
1
Rising edge or level
Falling edge
Completed by receiving origin
input after confirmation of
proximity input.
Executes search from
proximity in opposite direction
from set search direction.
2
Rising edge or level
Rising edge
Completed by receiving origin
input after confirmation of
proximity input.
3
Rising edge or level
Rising edge
Completed by receiving origin
input after confirmation of
proximity input.
Executes search from
proximity in opposite direction
from set search direction.
4
Rising edge and falling edge
Falling edge
Completed by receiving origin
input after confirmation of
proximity input.
5
Rising edge and falling edge
Rising edge
Completed by receiving origin
input after confirmation of
proximity input.
Note When using only an origin signal, the origin cannot be established except with
search pattern 0.
Search Pattern 0
1, 2, 3...
1. Origin proximity input: Rising edge (
↑
) or level
2. Origin input: Normally falling edge (
↓
), but rising edge (
↑
) when there is no
proximity signal.
3. Search procedure: Ends on falling edge of origin input after rising edge of
proximity input has been received.
If the search is started at the origin, then the search operation will be com-
pleted with only the origin signal.
When there is no origin proximity signal set, the proximity speed will be used
as the origin search speed and the search operation will be completed with
only the origin signal.
Содержание SYSMAC C500-NC113
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