Control And Protection Of Synchronized Actions; Control Via Plc - Siemens SINUMERIK 840Di sl Function Manual

Synchronized actions, ncu system software
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2.6 Control and protection of synchronized actions

2.6
Control and protection of synchronized actions
2.6.1

Control via PLC

Function
Modal synchronized actions (ID, IDS) can be locked or enabled from the PLC.
• Disabling of all modal synchronized actions
• Selective disabling of individual synchronized actions
Sphere of influence
The PLC can control maximum up to the first 64 modal synchronized actions by applying
disables (ID, IDS 1-64). The synchronized actions, that can be inhibited by the PLC are
designated by the NC with 1 in the 64-bit field of the following interface:
DB21, ... DBB308-315
Protected synchronized actions are never tagged as being possible to disable. See Chapter
2.6.2 "Protected synchronized actions".
Disable all synchronized actions
The PLC-application program can exclude all modal synchronized actions defined and saved
in the NC from activation by setting the NC/PLC-interface:
DB21, ... DBX1.2 (synchronized action off)
Protected synchronized actions are an exception. Please see Subsection "Protected
synchronized actions".
PLC cancels the total disabling again by setting the NC/PLC-interface to 0:
DB21, ... DBX1.2.
Application of selective disabling
One bit is reserved for each of first 64 IDs (1-64) in the PLC interface:
DB21, ... DBX300.0 (disable synchronized action No. 1)
to
DB21, ... DBX307.7 (disable synchronized action No. 63)
These functions are enabled by default (bits = 0). When the allocated bit is set, evaluation of
the condition and execution of the associated function are disabled in the NCK.
106
Function Manual, 11/2006, 6FC5397-5BP10-2BA0
Synchronized actions

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