Hmi Interface Db21 - Siemens SINUMERIK 840DE sl Commissioning Manual

6 Signal Description
6.2

HMI interface DB21

6.2 HMI interface DB21
DB21
DBX7.5
Data block
Edge evaluation: no
Significance of signal
6-32
In ShopMill, the start of a program can only be executed in the machine area by
default. Starting a program in any of the other areas (e.g. tools) is prevented by
a global start lock.
Note
You can specify, via MD 9719, bit 9, that it should be possible to start a
program from all masks.
In automated sequences, e.g. a start from the PLC as used on a
machine with a pallet change system, this global start lock can be deactivated
by means of interface signal DB21.DBX7.5.
This prevents a program start of this nature being locked by the
operator interface.
suppressStartLock
Deactivate global start lock
PLC ––> NCK
Signal(s) updated: cyclic
0: Do not cancel global start lock
1: Deactivate global start lock
So that an alarm is output in the event of a start being attempted while
the global start lock is activated, bit 6 in the machine data
16956 $MN_ENABLE_ALARM_MASK must be set.
SINUMERIK 840D sl Commissioning Manual CNC: ShopMill – 11/2006 Edition
Signal(s) valid from software version:
ShopMill 7.1
© Siemens AG 2006 All Rights Reserved
11/2006