Parameter Manual
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
377
Detailed descriptions of interface signals
4.8 Axis / spindle-specific signals
4.8.1 Transferred axis-specific M, S functions
DB370x
DBD0
M function for spindle
Signal(s) from axis/spindle (NCK → PLC), axis-specific
Edge evaluation: Signal(s) updated: Cyclic
Application Generally, the M functions are output for specific channels in DB2500. In the
range DB2500 DBB1000 ... these are only present for one PLC cycle; in
DB2500 DBD3000 ... up to a new output.
Selected "M functions for the spindle" are available as integer number actual
value of the PLC in this IS "M function for spindle".
• M3 → Value: 3
• M4 → Value: 4
• M5 → Value: 5
corresponding to ... IS "S function for spindle" (DB370x DBD4), axis-specific
IS auxiliary function transfer from NC channel (DB2500)
Note for the reader Function Manual Basic Functions S1
DB370x
DBD4
S function for spindle
Signal(s) from axis/spindle (NCK → PLC), axis-specific
Edge evaluation: Signal(s) updated: Cyclic
Application Generally, the S function is transferred channel-specific in DB2500 DBD4000
... as floating-point value to the PLC.
In this IS "S function for the spindle", this output is realized to the PLC as
floating-point value for specific axes:
• S... as spindle speed in rpm (programmed value)
• S... as constant cutting speed in m/min or ft/min for G96
The following S functions are not output here:
• S... as programmed spindle speed limiting G25
• S... as programmed spindle speed limiting G26
• S... as the dwell time in spindle revolutions
corresponding to ... IS "M function for spindle" (DB370x DBD0), axis-specific
IS "Transferred S function" (DB2500 DBD4000 ...), channel-specific
Note for the reader Function Manual Basic Functions S1
Siemens Controls
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