Hmi Interface Db21 - Siemens SINUMERIK 840D sl Commissioning Manual

11/2006
6.2

HMI interface DB21

DB21
DBX7.5
Data Block
Edge evaluation: No
Significance of signal
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D sl Commissioning Manual CNC: ShopTurn – 11/2006 Edition
In ShopTurn a program by default can only be started in the machine area.
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 in-
terface 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.
6 Signal Description
6.2 HMI interface DB21
Signal(s) valid from software version:
ShopTurn 7.1
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