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7. Description of Registers
R01 Slow speed distance forward/reverse or forward only (see R28/2)
Distance at which the controller switches from high speed to slow speed. The output high
speed will be switched off.
R02 Creep speed distance forward/reverse or forward only (see R28/2)
Distance to demand position at which the controller switches from slow to creep speed
R03 Stop offset distance forward/reverse or forward only (see R28/2)
The overrun distance can be programmed to compensate for distance from the switch-off
point of the motor to standstill. For exact positioning, the overrun distance should be very
small (0.0 to 0.5 mm). Therefore the mechanical friction should be steady and the creep
speed should be very slow.
During commissioning, first set R12 to zero (to eliminate Tolerance window blanking),
then set the value of R03 to 0.0 and execute a number of moves in both directions. Note
the average overrun distance and then set R03 to that value. Then set R12 to suit.
R04 Backlash overrun
To correct for screw or pinion backlash, the Target position should be approached from
one direction only. In positive direction therefore, the Target position will be overrun by
the value of R4 and driven back at creep speed after a time delay of R10, to the Demand
position.
R05 Retract distance
There are different modes available in the P8511, selectable by Register R18/2.
If R18/2 = 0 Retract Position = Actual + R5
If R18/2 = 1 Retract Position = Value of R5
Whilst the input St3/6 is held on, the slide will move to the “Retract” position. On release
of input, slide will return to the original position. (Value 0)
When input St3/6 is activated, the slide moves to position as set in R5 but will not return
to original position on release of input. (Value 1)
R06 Tool offset compensation
This Register can be accessed without Security Code. When moving in incremental, it is
often the case that the subsequent function is a cut that removes part of the material.
Thus to cut the correct preset lengths, it is necessary to move the demanded distance
plus the “Tool Offset”. This feature is active in incremental mode.
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