Siemens SINUMERIK 840D sl Function Manual page 1366

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Table of Contents

W1: Tool offset

Whether the new tool will be loaded immediately by means of the T function depends on the

setting in the machine data:

MD22550 $MC_TOOL_CHANGE_MODE (new tool compensation with M function)

Change tool immediately

MD22550 $MC_TOOL_CHANGE_MODE = 0 (new tool compensation with M function).

The new tool is changed immediately with the T function.

This setting is used mainly for turning machines with tool revolver.

Change tool with M06

MD22550 $MC_TOOL_CHANGE_MODE = 1 (new tool compensation with M function).

The new tool is prepared for changing with the T function.

This setting is used mainly on milling machines with a tool magazine, in order to bring the new

tool into the tool change position without interrupting the machining process.

The old tool is removed from the spindle and the new tool is loaded into the spindle with the

entered M function in the machine data:

● MD22560 $MC_TOOL_CHANGE_M_CODE (M function for tool change)

This tool change must be programmed with the M function M06, in accordance with DIN 66025.

The next tool is preselected with the machine data:

● MD20121 $MC_TOOL_PRESEL_RESET_VALUE (Preselected tool at RESET)

Its tool length compensation values must be considered at RESET and powerup according to

machine data:

● MD20110 $MC_RESET_MODE_MASK (Determination of control default settings after

RESET/TP end).

Value range of the T function or the tool number

The T function or the tool number can assume the following integer numbers:

● Minimum value: T0 (no tool)

● Maximum value: T32000 (tool with number 32000)

Function Manual, 01/2015, 6FC5397-0BP40-5BA2

Basic Functions

Sinumerik 828d Sinumerik 840de sl