HEIDENHAIN TNC 335 Technical Manual - Manual (Page 296)

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TNC 360 15 Tool Changer 4-199
MP7480.1 Output tool or pocket number with TOOL DEF block
Input range: 0 to 3
0 = No output
1 = Tool number output only when tool number changes (W262)
2 = Tool number output with every TOOL DEF block (W262)
3 = Output of pocket number (W262) and tool number (W264) only when tool
number changes
W262 Pocket number when MP7480 = 3 NC NC
Tool number when MP7480 = 1 or 2
W264 Tool number when MP7480 = 3 NC NC
W512 T code PLC PLC
W514 P code PLC PLC
Set Reset
M2046 Strobe signal T code (P code) with TOOL CALL NC NC
M2047 Strobe signal 2nd T code (2nd P code) with TOOL DEF NC NC
M2483 Feedback T code (P code) with TOOL CALL PLC PLC
M2484 Feedback T code (P code) with TOOL DEF PLC PLC
M2400 Tool number 0 programmed NC NC
M2063 PGM 0 is selected NC NC
M2597 Binary format for T code and P code in W262 and W264 PLC PLC
15.2.1 Output of tool number (Fixed pocket coding)
Evaluating the tool number is adequate for fixed tool pocket coding. MP7480 is used to select
whether the tool number should be transferred to the PLC with every TOOL CALL (TOOL DEF)
block or only when the tool number changes (input values for MP7480 = 2 or 1). With this setting
the tool number is transferred to the Word W262 when a TOOL CALL or TOOL DEF block is
executed. W264 is not used.
Unlike variable pocket coding, the pocket numbers are displayed in the tool table but are not
changed by the NC.
15.2.2 Output of pocket number (Variable pocket coding)
With variable pocket coding, the NC must transfer the pocket number of the called tool to the PLC
(MP7480 = 3). In this setting, the pocket number is filed in Word W262. In addition to the pocket
number, the NC also transfers the current tool number in W264. Variable pocket management (the
assignment of tool number to pocket number in the tool table) is handled by the NC.
If marker M2612 (suppress pocket exchange in the tool table ) is set before a T strobe is output
(M2046), the pocket numbers are not exchanged. The PLC only acknowledges the T strobe without
having made an exchange in the tool magazine and resets the PLC marker M2612. The new tool
number is displayed highlighted (inversely) in the status and the associated tool data ( length, radius)
are activated. The inverse display of the tool number in the status display remains until a tool has