36 HEIDENHAIN Technical Manual iTNC 530 HSCI
SELinux
The directory itself and the data in the PLC:\etc\selinux directory should
not be deleted. These files are directly related to the function of the SELinux
safety software.
MP6508 switchover via PLC/FN (3 touch probes)
The machine parameter MP6508 (SE 642 transmitter/receiver unit at X112)
can now be changed via the PLC or an FN function. Hence, the transmitter/
receiver unit can be activated or deactivated using a macro or cycle, for
example. This makes it possible to use different TT touch probes at X113
and on the SE.
MP subfiles
Placeholders ? can be entered in bit-specific machine parameters in MP
subfiles. This makes it possible to change individual bits specifically. For
example, you can overwrite only bits 2 and 5 in an MP subfile by entering
MP10:????1??0??.
New FN functions
• FN 17: SYSWRITE ID 59 NR10 =+0
When this function is called in the tool change macro, the spindle speed
is recalculated using the current tool radius from TOOL.T if a cutting
speed is programmed in the TOOL CALL block. The spindle speed is
entered in the system datum that can be read with FN18: SYSREAD
ID60 NR3.
Example of a tool-change macro showing how the changed tool data
can be made effective after a new tool has been inserted:
; Change the tool
78 TOOL CALL Q1 .Q7 Z SQ3 DL+Q4 DR+Q5 DR2:+Q6
; Data in TOOL.T are updated
79 M...
; Recalculation of the spindle speed from the cutting speed
80 FN 17: SYSWRITE ID 59 NR10 =+0
; Read the spindle speed
81 FN 18: SYSREAD Q3 = ID60 NR3 IDX0
; Changed tool data become effective
82 TOOL CALL Q1 .Q7 Z SQ3 DL+Q4 DR+Q5 DR2:+Q6
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