Fc22: Tm_Dir - Direction Selection For Tool Management - Siemens SINUMERIK 840D sl Function Manual

P3: Basic PLC program for SINUMERIK 840D sl
13.17 Block descriptions
13.17.25

FC22: TM_DIR - direction selection for tool management

NOTICE
Use
Block FC22 "TM_DIR" may only be used in conjunction with the tool management.
Function
Referred to the location numbers, e.g. a tool magazine or revolver (indexing axis) block FC22
"TM_DIR" supplies the shortest path and direction of motion for positioning, based on the target
and current position.
Outputs
● Input FC22: "Start" = 1 ⇒ the outputs are cyclically updated.
● Input FC22: "Start" = 0 ⇒ the outputs are undefined.
Special positioning
For direction selection with special positioning (input FC22: "Offset" > 0) a new target position
is calculated from the target position, the offset for special positioning as well as the number
of magazines locations:
New_target position = ( target position - ( special position -1 ) ) neg. MODULO
number_of_magazine locations
The new target position corresponds to the location number at which the magazine must be
positioned so that the target position requested by the user corresponds to the location number
of the special position.
The directional optimization is active both with and without special positioning.
Call
The block must be called once with the appropriate parameter settings for each magazine.
References
● Further PI services for tool management:
– FB4: Request PI service (Page 937)
– FC7: TM_REV - transfer block for tool change with revolver (Page 997)
– FC8: TM_TRANS - transfer block for tool management (Page 1000)
● Function Manual, Tool Management
Declaration of the function
FUNCTION FC22: VOID
// NAME:
VAR_INPUT
1044
TM_DIR
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions