Working With Two Toolholders - Siemens SINUMERIK 828D Commissioning Manual

Tool management

9.6 Working with two toolholders

System variable
$A_TC_LTO
$AC_TC_CMDT
$AC_TC_ACKT
$AC_TC_CMDC
$AC_TC_ACKC
$AC_TC_MMYN
$AC_TC_LMYN
Supplementary system variables for a multitool
System variable
$AC_TC_TOOLIS
$AC_TC_MTDIST
$AC_TC_MTNLOC
$AC_TC_MTTN
$AC_TC_MTLTN
9.6 Working with two toolholders
It is possible to work on a single turning machine with two toolholders, both of which are
mounted on an X axis. The toolholders may be revolvers, multifix, or a combination of both.
As both tool holders are mounted on the same axis it is only possible to machine with one tool.
The workpiece is located between the two tool adapters.
All tools have the same reference point (on toolholder 1) irrespective of which toolholder they
are on. Consequently, the tool lengths of the second toolholder are always longer than the tool
lengths of the first toolholder. The main machining is performed in the negative X axis direction.
304
Meaning
Target location number of the old tool (to be removed).
Trigger variable to output command of the NC (is set for one
IPO).
Trigger variable for acknowledgment of the PLC (is set for one
IPO).
Counter for the command output.
Counter for the acknowledgments.
Owner magazine number of the new tool (to be loaded).
Owner location number of the new tool (to be loaded).
Meaning
Type of the tool be transported
0 = single tool
1 = multitool with location number as distance coding
2 = multitool with length separation as distance coding
3 = multitool with angular separation as distance coding
Distance of the new tool in the multitool from the reference
location. If the multitool has the length separation as distance
coding, the variable contains the length in the unit mm or inch
as specified by the set dimension system.
Number of locations of the new multitool present in the tool
change or tool transport.
Number of the multitool in which the new tool is to be deployed.
Location number of the multitool with the new tool.
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
SINUMERIK Operate