14.8 Serial Commands
14.8.2 Homing
14-12
14.8.2
Homing
The following commands are used for homing.
Serial Command
Function/Description
Positive
Response
ZRN
Homing
Starts homing.
When homing has been stopped with the HOLD command, homing will be
restarted (the hold will be cleared) when the ZRN command is executed
again.
The parameters for homing are specified in parameters PnB31 to PnB39.
The current position when homing is completed is specified in PnB25.
When the control power supply is turned ON and homing is completed,
the value of the current position is replaced with the value in PnB25.
OK
Continued on next page.
PnB31
Homing
Method
PnB32
Homing
Direction
PnB33 to PnB39
PnB31 =
0000h:
No homing.
Homing ends
when the con-
trol power sup-
ply is turned
ON.
−
−
PnB31 =
0001h:
Uses the /DEC
signal and the
encoder’s
phase C.
PnB32 =
0000h:
Forward
PnB32 =
0001h: Reverse
*
To change the polarity, use parame-
ter PnB11.
PnB31 =
0002h:
Uses the /DEC
signal only.
*
To change the polarity, use parame-
ter PnB11.
PnB31 =
0003h:
Uses the
encoder’s
phase C only.
ZRN
Moving
speed
(PnB33) Approach
speed
(PnB35)
Creep
speed
(PnB37)
Final Move Distance
(PnB39)
(First phase-C input
after/DEC signal
went from active to inactive)
Encoder’s
phase C
/DEC*
/DEC*
When PnB11
is 0000h
When PnB11
is 0001h
ZRN
Approach
speed
(PnB35)
When PnB11
is 0000h
When PnB11
is 0001h
Creep
speed
(PnB37)
Final Move Distance
(PnB39)
/DEC*
ZRN
Approach
speed
(PnB35)
Creep
speed
(PnB37)
Final Move Dis-
tance (PnB39)
Encoder
phase C