IAI SCON-CA - Home Return (HOME, HEND, PEND, MOVE)

Chapter 3 Operation
103
[4] Home Return (HOME, HEND, PEND, MOVE)
Input Output
PIO signal
HOME HEND PEND MOVE
Patterns 0 and 1
{ { { {
Patterns 2 to 4
{ { {
×
Pattern 5
×
Note1
{
× ×
Patterns 6 and 7
{ { {
×
{ : Available, ×: Unavailable
Note 1: For pattern 5, the home return by the HOME signal is not allowed. Refer to 3.2.6 [1]
Home Return (ST0, HEND) for how to perform a home-return operation.
The HOME signal is intended for home return.
The HOME signal is caught at the rising edge (ON edge) to start the home return. At completion
of the home return, home return completion signal HEND is turned ON. After HEND is turned
on, turn off HOME Signal. Home-Return Complete Signal HEND will be kept ON once it is
turned ON even if getting off the home position. (HEND turns OFF when home position is lost
and undetermined.) Even when HEND is ON, home-return operation can be conducted again
by turning HOME Signal ON. HEND should be OFF during the home-return operation and
should be turned ON again once the home-return operation is complete.
Also, the positioning complete signal PEND turns OFF and the moving signal MOVE turns ON
during a home-return operation.
Homing Completion Signal
HEND
(Controller→PLC)
Positioning Completion Signal
PEND
(Controller→PLC)
Moving Signal
MOVE
(Controller→PLC)
Home Return Signal
HOME
(PLC→Controller)