Detailed description
2.8 Referencing in followup mode
Basic logic functions: Reference Point Approach (R1)
52 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Starting the referencing operation
If the machine axis is operating in the follow-up mode at the start of reference point
traversing, (DB31,... DBX61.3 == TRUE) the measuring system will be referenced in the
follow-up mode.
If the machine axis is not operating in the follow-up mode at the start of reference point
traversing, the "normal" from the NC controlled reference point travels is carried out.
Referencing in follow-up mode can be started in the following modes:
• JOG-REF: Traversing keys
• AUTOMATIC: Part program command G74
Sequence of referencing operation (JOG-REF mode)
1. Activate follow-up mode of machine axis:
DB31, ... DBX1.4 (follow-up mode) = 0
DB31, ... DBX2.1 (servo enable) = 0
2. Take into account activation of follow-up mode:
DB31, ... DBX61.3 (follow-up mode active) = 1
3. Switch to JOG-REF mode.
4. External movement of machine axis across encoder zero mark or parameterized number
of distance-coded reference marks. The referencing operation is started internally in the
NC as soon as the machine axis is moved:
DB31, ... DBX61.4 (axis/spindle stationary) = 0
5. The measuring system is referenced after the encoder zero mark or the assigned number
of distance-coded reference marks have been successfully detected:
DB31, ... DBX60.4/60.5 (referenced/synchronized 1 / 2) = 1
Aborting the reference operation
An active referencing operation can be aborted by:
• Deselecting follow-up mode
• NCK Reset
Response when measuring systems are already referenced
A measuring system that has already been referenced can only be re-referenced in
AUTOMATIC mode using part program instruction G74.
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