Referencing - Siemens SINAMICS S120 Function Manual

Function modules
7.9 Basic positioner
7.9.3

Referencing

Features
● Reference point offset (p2600)
● Reversing cams (p2613, p2614)
● Reference cam (p2612)
● Binector input start (p2595)
● Binector input setting (p2596)
● Velocity override (p2646)
● Reference point coordinate (p2598, p2599)
● Selecting the referencing type (p2597)
● Absolute encoder adjustment (p2507)
Description
After a machine has been powered-up, for positioning, the absolute dimension reference
must be established to the machine zero. This operation is known as referencing.
The following referencing types are possible:
● Setting the reference point (all encoder types)
● Incremental encoder
● Flying referencing (passive (p2597 = 1))
● Absolute encoder
A connector input is provided for all referencing types to input the reference point coordinate;
this allows, e.g. the change/input via the higher-level control. However, to permanently enter
the reference point coordinate, an adjustable parameter for this quantity is also required. As
standard, this adjustable parameter p2599 is interconnected to connector input p2598.
Set reference point
The reference point can be set using a 0/1 edge at binector input p2596 (set reference point)
if no traversing commands are active and the actual position value is valid (p2658 = 1
294
NOTICE
Referencing distance-coded zero marks is not supported.
Active referencing (reference point approach (p2597 = 0)):
– Reference cams and encoder zero mark (p2607 = 1)
– Encoder zero mark (p0495 = 0)
– External zero mark (p0495 ≠ 0)
– Absolute encoder adjustment
– Flying referencing (passive (p2597 = 1))
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions