Parameter Manual
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
339
Detailed descriptions of interface signals
4.4 Auxiliary function transfer from NC channel
4.4 Auxiliary function transfer from NC channel
DB2500
DBX4.0 to .4
DBX6.0
DBX8.0
DBX10.0
DBX12.0 to .2
M function Change 1 to 5
S function Change 1
T function Change 1
D function Change 1
H function Change 1 to 3
Signal(s) from channel (PLC)
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 M, S, T, D, H information was output at the interface together with a new
value and the associated change signal. In this case, the change signal
indicates that the corresponding value is valid.
The change signals are only valid for one PLC cycle! This means that if the
signal is 1, then a change is pending for this cycle.
Signal state 0 The value of the data involved is not valid.
Note for the reader Function Manual Basic Functions H2
DB2500
DBB1000 to DBB1012
Decoded M signals: M0 - M99
Signal(s) from channel (NCK)
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 The dynamic M signal bits are set by decoded M functions.
Signal state 0 For a general auxiliary function output, the dynamic M signal bits are
acknowledged by the PLC system program after the user program has
been completely run-through (executed once).
Application Spindle clockwise/counterclockwise rotation, switch coolant on/off
corresponding to ... IS "M function for the spindle (DINT), axis-specific" (DB370x DBD0)
Note for the reader Function Manual Basic Functions H2
DB2500
DBD2000
T function 1
Signal(s) from channel (PLC)
Edge evaluation: No Signal(s) updated: job-
controlled by NCK
Signal state 1 The T function programmed in an NC block is made available here as soon
as the T change signal is available.
Value range of the T function: 0-32000 ; integer number
The T function remains valid until it is overwritten by a new T function.
Signal state 0
• After the PLC has ramped-up.
• All auxiliary functions are deleted before a new function is entered.
Application Control of automatic tool selection.
Special cases, errors, ... With T0, the actual tool is removed from the tool holder but not replaced by
a new tool (default configuration of the machine manufacturer).
Note for the reader Function Manual Basic Functions H2
Siemens Controls
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