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71
START command
IR n, bit 00
Pulse output
Time
1
0
1
0
1
0
When positioning ends, the positioning
action number is changed as follows:
2
1
0
3
Output
code of
action #0 action #1 action #2
code of
code of
Output
Output
#0, single
#1, continuous
#2, single
Positioning Completed flag
IR n+5, bit 00
Busy flag
IR n+5, bit 12
Positioning action number
IR n+7, bits 07 to 00
Output code
IR n+7, bits 08 to 11
4–3
ORIGIN SEARCH
Before positioning actions can be executed, the origin must be defined as a
reference point. The main method for this is ORIGIN SEARCH. The program
executes ORIGIN SEARCH by turning ON the ORIGIN SEARCH command
bit, bit 02 of IR word n. When this bit is turned ON, the Position Control Unit
establishes the position of the origin through inputs from an origin sensor
and, if provided, an origin proximity sensor (effective on signal’s rising edge).
Before using ORIGIN SEARCH, set the DIP switch as described in
Section
2–1 to establish the direction from which the search will be made, the pres-
ence or absence of a proximity sensor, and the type of input used.
4–3–1
DM Area Settings
In addition to the settings described in detail in this section, the data listed
below must also be set in order to execute ORIGIN SEARCH. They are the
same as those set for START, so they can be set by following the instructions
contained in
Section 4–1.
Initial Speed Number
Bits 11 to 08 of DM word m
Speeds
DM words m+82 through m+96
Speed Units
DM word m+97
Acceleration
Bits 15 to 00 of DM word m+98
Deceleration
Bits 15 to 00 of DM word m+99
DM word m+1, bits 03 to 00
Set to an integer between 1 and F (hex). The speed number set here refers
to one of the speeds set in DM words m+82 through m+96. It cannot be set
ORIGIN SEARCH
Proximity Speed Number
(Low Speed)
ORIGIN SEARCH