Programming Instructions For Activating And Deactivating The Coupling - Siemens SINUMERIK 840D sl Function Manual

Programmable block change
It is possible to mark a point in the NC program using the "WAITC" language instruction.
The system waits at this point for fulfillment of the synchronism conditions for the specified
FS and delays changes to new blocks until the specified state of synchronism is reached
(see Fig.).
WAITC (FS)
Advantage: The time between activating the synchronous coupling and reaching
synchronism can be used in a meaningful way, technologically speaking.
Note
Basically, it is always possible to write WAITC. If the spindle indicated is not active as FS,
the instruction for this spindle is without effect.
If no synchronism condition is indicated, the check is always performed for the synchronism
condition programmed/configured on the respective coupling, at least for the setpoint
synchronism.
Examples:
WAITC(S2),
:
WAITC(S2, "Fine"),
:
WAITC(S2, ,S4, "Fine")
Stop and block change
If "Stop" has been activated for the cancellation period of the axis enables for the leading or
following spindle, then the last setpoint positions with the setting of the axis enables from the
servo drive are approached again.
Program instructions COUPON and WAITC can influence the block change behavior. The
block change criterion is defined using COUPDEF or via the MD21320
$MC_COUPLE_BLOCK_CHANGE_CTRL_1.
14.2.2

Programming instructions for activating and deactivating the coupling

Activate synchronous mode
Language instruction COUPON is used to activate couplings and synchronous mode.
Two methods by which synchronous operation can be activated are available:
1. COUPON(FS, LS)
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Fastest possible activation of synchronous operation with any angular reference between
the leading and following spindles.
14.2 Programming of synchronous spindle couplings
S3: Synchronous spindle
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