8 Home Position Return and Internal Positions
140 SD780 Series Servo Technical Manual
As shown in the figure above, section C of Pn800 is defined as home position return automatically
trigger when power on. When the C segment is set to 1, it performs the home position return
automatically when the servo is enabled for the first time.
The A and B sections of Pn800 are defined as the point number for automatic operation after the
home position return is completed.
8.1.4 Home position return triggered by point function
The home position return function can be triggered by the point function. The definitions of SI
terminals related to point functions are shown in Table 2.3 below:
SI Terminal
Name
SI Terminal Function Code
Function Description
PosTrig
0x16
Point trigger function (valid on rising
edge)
PosBit0
0x17
Point segment number selection Bit0
(valid at high level)
PosBit1
0x18
Point segment number selection Bit1
(valid at high level)
PosBit2
0x19
Point segment number selection Bit2
(valid at high level)
PosBit3
0x1A
Point segment number selection Bit3
(valid at high level)
PosBit4
0x1B
Point segment number selection Bit4
(valid at high level)
Table 2.3 SI terminal point function definition
0: Stop after home position return
1-x: Jump to the designated segment to run after
home position return
0: Do not perform home position return in the first SvOn
1: Perform home position return in the first SvOn
Invalid