
4.DESCRIPTION OF PARAMETERS B-63530EN/03
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1 Set bit 1 (OPTx) of parameter No. 1815 to 1, bit 2 (DCLx) of
parameter No. 1815 to 1, and bit 3 (DCRx) of parameter No.
1815 to 0/1 to enable an encoder with absolute addressing
reference marks (linear scale/rotary encoder).
Set a proper value in parameter Nos. 1821 and 1882.
Set 0 in parameter No. 1240.
Set 0 in parameter Nos. 1883 and 1884.
2 Establish a reference position at a proper location.
(As the result, the machine coordinate represents the distance
from the encoder origin to the current position.)
3 Position the machine accurately at the reference position by jog
feed or handle feed.
4 In parameter No. 1883, set the machine coordinate (diagnosis
screen No. 301) converted to the detection unit (diagnosis screen
No. 301 multiplied by CMR).
5 Set parameter No. 1240 if necessary.
NOTE
This method cannot be used if the distance from
the encoder origin to the reference position
exceeds 99,999,999.
[Method of setting parameter No. 1883]
(When an encoder with distance-coded reference marks (linear
scale/rotary encoder) (detection circuit C) is used)
A value to be set in parameter No. 1883 can be determined using the
procedure below.
1 Set bit 1 (OPTx) of parameter No. 1815 to 0/1 and bit 2 (DCLx)
of parameter No. 1815 to 1 to enable an encoder with
distance-coded reference marks (linear scale/rotary encoder)
(detection circuit C).
Set 0 in parameter No. 1240.
Set 0 in parameter Nos. 1883 and 1884.
2 Establish a reference position at a proper location.
(As the result, the machine coordinate represents the distance
from the encoder origin to the current position.)
3 Position the machine accurately at the reference position by jog
feed or handle feed.
4 In parameter No. 1883, set the machine coordinate (diagnosis
screen No. 301) converted to the detection unit (diagnosis screen
No. 301 multiplied by CMR).
5 Set parameter No. 1240 if necessary.
NOTE
This method cannot be used if the distance from
the encoder origin to the reference position
exceeds 99,999,999.