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306
Command Details
Section 6-3
Description
• DATUM command performs the origin search for the specified axis.
• Specifying the offset will set the origin of the machine coordinate system
after an origin search to other than zero. (Specify zero to set it to zero.)
• The operation patterns and speeds are determined by the parameters
shown in the table below:
No.
Name
Value
Content
P4AA01
Origin search
method
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.
P4AA02
Origin search start
direction
0: Same as phase-Z detection
1: Opposite to phase-Z detection
Sets the origin search start direction for origin
search method 1.
P4AA03
Phase-Z (C) detec-
tion direction
0: Positive direction
1: Negative direction
Sets the phase-Z (C) detection direction for ori-
gin search method 1,2, and 3.
P4AA04
Origin deceleration
method
0: Uses origin proximity
1: Uses CW and CCW
Specifies whether the origin proximity or limit
input signal is used as origin proximity input sig-
nal for origin search method 1 and 3.
P4AA06
Origin determine sig-
nal
0: Phase-Z (C)
1: External input signal 1
2: External input signal 2
3: External input signal 3
Sets the signal to determine (latch) the origin.
P4AA07
Origin search feed
rate
1 to 2147483647
*It is limited by 32767 command
unit/unit scan.
Specifies the speed for the 1st level of the 3-
level speed origin search.
P4AA08
Origin search
approach speed
1 to 2147483647
*It is limited by 32767 command
unit/unit scan.
Specifies the speed for the 2nd level of the 3-
level speed origin search, or for the 1st level of
the 2-level speed origin search.
P4AA09
Origin search creep
speed
1 to 2147483647
*It is limited by 32767 command
unit/unit scan.
Specifies the speed for the 3rd level of the 3-
level speed origin search, or for the 2nd level of
the 2-level speed origin search.
P4AA10
Machine coordinate
origin offset
−
2147483648 to 2147483647
Axis control bit: Offset for origin search
Not used for DATUM command
P4AA11
Final travel distance
in origin search
0 to 2147483647
Sets the final travel distance in origin search.
This is added to the travel distance in the travel-
ing direction.
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