IAI America MSEP - Manual (Page 159)

3.8 I/O Signal Controls and Function
151
(6) Home return (HOME) PLC Output Signal
Home return completion (HEND) PLC Input Signal
When the “HOME” signal is turned “ON”, this command is processed at the startup (ON edge),
and the homing operation is performed automatically.
When the data home return is completed, the HEND signal is turned “ON”.
Once the “HEND” signal is turned “ON”, it can not be turned “OFF” until the power is turned
“OFF” or the “HOME” signal is input again.
Even after the completion of the homing operation, when the “HOME” signal is turned “ON”, the
homing operation can be performed.
HOME
(PLC → MSEP)
HEND
(MSEP → PLC)
PEND
(MSEP → PLC)
MOVE
(MSEP → PLC)
Actuator operation
Mechanical end Stop at the Home Position
Caution: In the Position 1/Simplified Direct Value Mode, when the positioning command is
issued without performing the homing operation after the power injection, the
positioning is performed after the automatic homing operation.
Exercise caution that in the direct numeric specification mode, issuing a positioning
command to a given position following the power on, without performing a home
return first, will generate an alarm “Error Code 83: ALARM HOME ABS (absolute
position move command when home return is not yet completed)” (operation-reset
alarm).