Siemens SINUMERIK 840D sl Function Manual page 126

W1: Tool offset
2.8 Tool carriers with orientation capability
Accessing the data of a tool carrier:
● Part program
– Write: $TC_CARR<n>[<m>] = <value>
– Read: <value> = $TC_CARR<n>[<m>]
● OPI interface
The parameters of a tool carrier with orientation capability can be read and written with the
system variables $P_TCANG[<n>].
Data backup
The system variables specified above are saved as part of the general NC data backup.
Selecting the tool carrier
A tool carrier with number <m> is selected with the TCARR = <m> NC program command
(TCARRTool Carrier).
TCARR = 0 deselects an active tool carrier.
New tool or new tool carrier
When a new tool is activated, it is always treated as if it was mounted on the active tool carrier.
A new tool carrier is activated immediately when it is programmed. It is not necessary to change
tools or reprogram the active tool. The tool carrier (number) and tool (number) are independent
and can be used in any combination.
Tool carrier from G command of group 42
Absolute tool orientation TCOABS (Tool Carrier Orientation ABSolute):
Tool orientation is determined explicitly if the corresponding values are entered in system
variable $TC_CARR13 or $TC_CARR14 and G command TCOABS is activated in G group 42.
Frame tool orientation TCOFR (Tool Carrier Orientation FRame):
Tool orientation can also be determined automatically from the current orientation of an active
frame when selecting a tool, if one of the following G commands is active in G group 42 when
the tool carrier is selected:
● TCOFR or TCOFRZ
The tool carrier with orientation capability is set so that the tool points in the Z direction.
● TCOFRX
The tool carrier with orientation capability is set so that the tool points in the X direction.
● TCOFRY
The tool carrier with orientation capability is set so that the tool points in the Y direction.
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Value <value> is written to parameter <n> of tool carrier <m> .
Parameter <n> of tool carrier <m> is read. If the referenced tool carrier is not defined, an
alarm is displayed.
Function Manual, 06/2019, A5E47435126B AA
Tools