Siemens SINUMERIK Series Function Manual

S3: Synchronous spindle
13.1 Brief description
Extended Functions
714 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Read current angular offset
Using axial system variables, it is possible to read the current position offset between the FS
and LS in the NC part program. A distinction is made between:
● Current position offset of setpoint between FS and LS
$AA_COUP_OFFS [<axis name for FS>]
● Current position offset of actual value between FS and LS
$VA_COUP_OFFS [<axis name for FS>]
(Explanation of <axis name>, see Section "Synchronous mode (Page 705)")
Activation after power ON
Synchronous mode can also be activated with non-referenced/synchronized FS or LS (IS
"Referenced/synchronized 1 or 2" DB31, ... DBX60.4 or DBX60.5 = 0). In this case, a
warning message is displayed.
Example:
LS and FS are already coupled in a friction lock via a workpiece after power ON.
13.1.5 Deselecting the synchronous mode for the part program
Open coupling (COUPOF, COUPOFS)
Synchronous mode between the specified spindles is canceled by the parts program
instruction
COUPOF. Three variants are possible.
If synchronous mode is canceled between the specified spindles using
COUPOF, then it is
irrelevant whether this coupling is permanently configured or user defined. The leading and
following spindles can be at standstill or in motion when synchronous operation is
deactivated.
On switching off the synchronous mode with
COUPOF, the following spindle is put into control
mode. The originally programmed S-word is no longer valid for the FS, the following spindle
can be operated like any other normal spindle.
When the coupling is opened with
COUPOF, a block preprocessing stop STOPRE is generally
initiated internally in the control.
The
COUPOFS instruction can be used to open a coupling either as quickly as possible with a
stop and no position data or with a stop at the programmed position.
COUPOF variants
Three different methods can be used to deselect synchronous mode with COUPOF:
1. Deactivation of coupling as quickly as possible
The block change is enabled immediately.
COUPOF(FS, LS)

Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD