S3: Synchronous spindle
13.1 Brief description
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
713
Block change behavior
Before synchronous operation is selected, it must be determined under what conditions the
block change must occur when synchronous mode is activated (see Section "Definition
(COUP
DEF) (Page 721)").
Determine current coupling status
The $AA_COUP_ACT[<axial expression>] axial system variable can be used in the NC part
program to specify the current coupling status for the specified axis/spindle (see Section
"Axial system variables for synchro
nous spindle (Page 726)"). As soon as the synchronous
spindle coupling is active for the following spindle, bit 2 must be "1" when read.
Change defined angular offset
Language commands COUPON and SPOS allow the defined angular offset to be changed while
synchronous mode is active. The following spindle is positioned as an overlaid movement at
the angular offset programmed with POS
FS
. During this time, the IS "overlaid movement"
(DB31, ... DBX98.4) is set.
Angular offset POS
FS
The defined angular offset POS
FS
must be specified as an absolute position referred to the
zero degrees position of the leading spindle in a positive direction of rotation.
The "0° position" of a position-controlled spindle is calculated as follows:
● From the zero mark or Bero signal of the measurement system and
● From the reference values saved using axis-specific machine data:
MD34100 $MA_REFP_SET_POS, reference point value,
of no significance with interval-coded systems.
MD34080 $MA_REFP_MOVE_DIST reference point distance/target point
with interval-coded systems,
MD34090 $MA_REFP_MOVE_DIST_CORR reference point offset / absolute offset with
interval coding.
Range of POS
FS
: 0 ... 359,999°.
References:
Function Manual Basic Functions; Reference Point Travel (R1)
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