Starting Up HMI Embedded (IM2) 08/2005
4 Functions/Parameterization
© Siemens AG, 2005. All rights reserved
IM2/4-56 SINUMERIK 840D sl/840D/840Di/810D HMI Installation and Start-Up Guide (IAM) – 08/2005 Edition
4.13 Program simulation
4.13.1 Turning simulation and program test
PLC signal DB19.DBB20.6 is set to 1 when simulation is activated. This signal can
be evaluated in order to switch to the program test and to remove the axis or
control enable (to prevent axis movements during the simulation).
The signal is reset to 0 when simulation is terminated.
In order to simulate certain operations during a dry run even though the
axis/controller pulses have been disabled, the transfer of status "Ext. pulse disable
active, terminal 663 open” to the NC has to be prevented.
The machine manufacturer can achieve this by evaluating the above-mentioned
PLC signal and activating the dry run simultaneously with NC Start.
If the drive machine data MD 1012: FUNC_SWITCH, bit 2 = 0 is also set, the "Ext.
pulse disable active, terminal 663 open" status will not be forwarded to the NC.
References: /FBA/DB1: Operational messages/alarm responses
4.13.2 Turning/milling simulation
Via the display machine data MD 9020: TECHNOLOGY, you define the basic
configuration for the free contour programming of turning/milling.
MD 9020 = 1 Turning machine configuration
MD 9020 ≠ 1 Milling machine configuration
References: /FB1/ A2: Various Interface Signals
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