July 2013 8.15 Tool changer 1629
8.15.6 PLC programming example
Tool changer and
basic flowcharts of
the associated
PLC program
Create the PLC program with the PLC development software PLCdesign.
The tool changer treated here has the following features:
Up to 254 tools
Variable pocket coding, MP7480.x = 4
Special tools allowed
Providing the next tool with TOOL DEF
Tool change with TOOL CALL
Tools can be manually changed without pocket number definition in the tool
table
Double changing arm
Special tools variable, MP4541 = 0
The following variables are used in the basic flowchart:
ISTREG = The pocket number at the tool change position of the tool
magazine
GRE1 = Pocket number of tool in changing arm facing tool magazine
GRE2 = Pocket number of the tool in the arm facing the spindle
SPIREG = Pocket number of the tool in the spindle
Set Reset
W262 Tool pocket number NC NC
W264 Tool number NC NC
M4073 Strobe signal T code (P code) with TOOL CALL NC NC
M4074 Strobe signal T code (P code) with TOOL DEF NC NC
M4093 Acknowledgment of T code (P code) with TOOL
CALL
NC NC
M4094 Acknowledgment of T code (P code) with TOOL
DEF
NC NC
M4520 Additional T code (P code) follows with TOOL
CALL
NC NC
M4524 Special tool called (TOOL CALL) NC NC
M4540 Sequence of the tool numbers
or pocket number transfer, M4520 = 1
PLC PLC
M4541 Special tool to original pocket
in spite of variable pocket coding
PLC PLC
SPIREG
GRE1 GRE2
ISTREG
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