Axisspecific Referencing - Siemens SINUMERIK 840D Function Manual

Mc axes and spindles

Hide thumbs Also See for SINUMERIK 840D:

Table of Contents

R1: Referencing

10.2 Axisspecific referencing

Referencing the machine axis can be manually started, or from the part program:

● Manual: Operation mode JOG and MDI, machine function REF

● Part program: Command G74

Axisspecific referencing

For axis-specific referencing using the reference point approach, the operation must be

individually started for each machine axis to be referenced.

Selecting mode and machine function

Before starting reference point approach of the machine axes, you must first place the relevant

mode group in JOG or MDI mode:

DB11, ... DBX0.2 (active JOG mode)

DB11, ... DBX0.1 (active MDI mode)

Then machine function REF (reference point approach) must be selected:

DB11, ... DBX1.2 (REF machine function)

Start of reference point approach

In axis-specific reference point approach, each machine axis must be started individually.

Reference point approach is started with the axis-specific traversing keys:

DB31, ... DBX4.6 (Traversing key minus)

DB31, ... DBX4.7 (Traversing key minus)

Direction enable

To avoid operator errors, the direction release must be parameterized. The direction enable

specifies which traversing key starts the reference point approach:

MD34010 $MA_REFP_CAM_DIR_IS_MINUS = <value>

The following machine data element can be used to specify whether reference point approach

is completed when the direction key is pressed once or whether the operator is required to keep

the direction key pressed (jogging) for safety reasons:

MD11300 $MN_JOG_INC_MODE_LEVELTRIGGRD (INC and REF in jog mode)

Reference point approach in plus direction

Reference point approach in minus direction

Axes and spindles

Function Manual, 06/2019, A5E47437747B AA

Sinumerik 840d sl