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Origin Setting of the Absolute Encoder
7-6
Origin Setting of the Absolute Encoder
68
3. Press the YES Key to perform a software reset.
The offset values will be read into the system parameters.
When the operation has been completed, the following display will appear.
EXT| ABS SF RST
|
ALL| COMPLETE!
YES
|
This display will appear even if a software reset is accidentally performed for
an axis not using an absolute encoder. In this case, however, the offset val-
ues will not be read into the system parameters.
Note When using the C200H-MC221, the offset values will be stored in the
RAM. For this reason, if the power supply for the MC Unit is turned
OFF, the a software reset values will return to the original values.
Save the parameters by writing them to flash memory.
This operation is used to set the origin for the absolute encoder for a specific axis
or all axes.
Note This procedure is only supported for the CS1W-MC221/421.
After completion of origin search, or after moving the axis to the position desired
as the origin using jogging operation, by performing origin setting for the abso-
lute encoder, the position at which the axis is at rest is registered in the MC Unit
as the absolute position of the origin.
More specifically, the procedure involves reading the absolute encoder value for
the mechanical origin, and writing it into the mechanical position parameter as
an absolute position setting. After this setting has been made, the absolute posi-
tion value will be deducted from values read in after servo-lock, giving the pres-
ent position and making origin search unnecessary. Further, when performing
origin search, the offset value for the origin (the standard origin offset value) can
also be set.
Absolute origin setting is used at the following times:
• When changing the mechanical origin.
• When using a Servodriver with an absolute encoder for the first time.
• When present position values are lost due to battery discharge during normal
operation.
• When the absolute encoder malfunctions.
• When replacing a Servomotor mounted with an absolute encoder.
Note
1. For details regarding the operations necessary to set multiple rotation data
for the absolute encoder to "0," refer to the relevant Servodriver manual.
2. Before performing this procedure, release memory protection in EXTEN-
SION mode.
If "5. ABS SETTING" is selected in EXTENSION mode, with memory protec-
tion enabled, the following message will be displayed:
FLASH MEMORY IS
PROTECTED.
RELEASE THE PRO
TECT AND PROCEED
Press the CLR Key. The EXTENSION mode menu will be returned. After re-
leasing memory protection by selecting "4. MEMORY PROTECT," re-at-
tempt the operation.
Section
7-6
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