Leading Value Coupling - Siemens sinumerik 840d Programming Manual

Tables
15
15.2 List of system variables
Identifier Type
$AA_EG_AX AXIS
15.2.49

Leading value coupling

$AA_LEAD_SP REAL
REAL
$AA_LEAD_SV
REAL
$AA_LEAD_P_TU
RN
$AA_LEAD_P REAL
$AA_LEAD_V REAL
$AA_SYNC INT
15-568
Description: System variable/value range/index
$AA_EG_AX[n,a]
n: Index for leading axis
a: Following axis
Identifier for nth leading axis
n: Index for leading axis (nth leading axis)
Axes: Geometry axis, channel axis, machine axis
$AA_LEAD_SP[LW]
Simulated master value – position
$AA_LEAD_SV[LW]
Simulated master value – velocity
$AA_LEAD_P_TURN[LW]
current leading value position parts lost through modulo reduction.
The actual leading value position (used for internal control
computation) is $AA_LEAD_P[LW] + $AA_LEAD_P_TURN[LW]
If MV is a modulo axis, $AA_LEAD_P_TURN
is an integral multiple of $MA_MODULO_RANGE.
If MV is not a modulo axis, $AA_LEAD_P_TURN is always 0.
Example_1:
$MA_MODULO_RANGE[LW]=360
$AA_LEAD_P[LW] =290
$AA_LEAD_P_TURN[LW] =720
The actual leading value position (used for internal control
computation) is 1010.
Example_2:
$MA_MODULO_RANGE[LW]=360
$AA_LEAD_P[LW] =290
$AA_LEAD_P_TURN[LW] =–360
The actual master value position
(used internally by the control in calculations) is –70.
$AA_LEAD_P[LW]
Current master value – position (modulo-reduced)
If MV is a modulo axis, the following always applies:
0 <= $AA_LEAD_P[LW] <= $MA_MODULO_RANGE[LW]
$AA_LEAD_V[LW]
Current master value – velocity
$AA_SYNC [FA]
Coupling status of following axis in master value coupling
0 => No synchronism
1 => Synchronization coarse (myVdiOut->getSynchCoarse() ==
TRUE)
2 => Synchronization fine (myVdiOut->getSynchFine() == TRUE)
3 => Coarse and fine
Axes: Geometry axis, channel axis, machine axis
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
04.00
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Part pro Sync O S
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