Axial System Variables For Synchronous Spindle - Siemens SINUMERIK 840D sl Function Manual

Synchronous Spindles (S3)
14.2 Programming of synchronous spindle couplings
Examples:
COUPDEF (S2, S1, 1.0, 1.0, "FINE, "DV")
:
COUPON (S2, S1, 150)
:
COUPOF (S2, S1, 0)
:
COUPDEL (S2, S1)
1. COUPOFS(FS, LS)
2. COUPOFS(FS, LS, POS
14.2.3

Axial system variables for synchronous spindle

Determining current coupling status
The current coupling status of the following spindle can be read in the NC parts program with
the following axial system variable:
$AA_COUP_ACT[<axial expression>]
For explanation of <axial expression> refer to "Synchronous mode (Page 863)".
Example:
$AA_COUP_ACT[S2]
The value read has the following significance for the following spindle:
Byte = 0:
Bit 2 = 1:
Bit 2 = 0:
Read current angular offset
The current position offset between the FS and LS can be read in the NC part program by
means of the following axial system variables:
● Setpoint-based position offset between FS and LS:
● Actual-value-based position offset between FS and LS:
884
Deactivating a coupling with stop of following spindle. Block change performed as quickly
as possible with immediate block change)
After the programmed deactivation position that refers to the machine coordinate system
has been crossed, the block change is not enabled until the deactivation positions
POSFS have been crossed.
Value range 0 ... 359,999°.
No coupling active
Synchronous spindle coupling active
Synchronized spindle coupling is not active
$AA_COUP_OFFS[<axial expression>]
$VA_COUP_OFFS[<axial expression>]
)
FS
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions