
4-22
4.6 Reference measure
F
UNCTIONAL
D
ESCRIPTIONS
8310/8610-8
mechanical
limit
reversing switch
reference coarse
reference fine
travel
E1750038
After initiating, the machine is driven in such a way that it travels contrary to the
direction determined at storage location 3/11. The corresponding speed rate is
set at storage location 3/16.
When the reversing switch is reached (
reversing switch signal becomes active,
logic level determined at storage location 3/14), the direction of travel is
reversed and the speed rate is reduced to the value determined at storage
location 3/17.
The drive now moves towards the reference position. Once this point has been
passed (
reference coarse/fine signals), the actual value counter (display A) is
set to the reference measure, the drive is stopped and the
reference reached
signal is output
. This process is described in the previous section 4.6.1.
During the automatic reference search routine display B shows
Ref
instead
of the sentence number.
The automatic reference search routine can be aborted by a
/stop or reset
signal.
Summary of Contents for GEL 8310
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