Siemens SINUMERIK 840D Description Of Functions page 394

7 Configuring example
7.3 Safety Integrated with SPL
Description After completion of test stop step 2, marker 217.1 is set and the forced
checking procedure for the inputs is started. The forced checking procedure is
performed in the following sequence.
Forced dormant error detection
of inputs and outputs
Forced dormant error detection output
PLC : Reset Q48.1
Check: Checkback input PLC: I76.4
both contactors dropped out
Forced dormant error detection output
PLC : Q48.1 enabled
Check: EMERGENCY STOP
actuated during test phase
Automatic emergency stop
acknowledgment by PLC
Acknowledgment by
PLC-SPL : DB18.DBX70.4
Fig. 7-14 Flowchart
Testing the external FC97 program excerpt
inputs and outputs
//
// ------ Forced checking procedure of the inputs/outputs ------
//
M217.1=1
7-394
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Start
Drop-out time
contactors
no
yes
yes
Backup time
yes
no
automatic
A data byte is transferrred from the
PLC with FC21 and evaluated by the
NCK-SPL
Acknowledgment by
NCK-SPL: QUIT_MARKER
End offset
Note
If an EMERGENCY STOP is triggered during the forced checking procedure
of the input and outputs, automatic acknowledgement is interrupted and the
test step is terminated.
If an error occurred while checking the checkback input and EMERGENCY
STOP is actuated, acknowledgement is only possible after the error has been
removed (diagnostics) of the checkback input by the RESET button.
U M 217.1
no
STOP D triggered on
PLC side
Error diagnostics
RESET ==> error check
Error corrected ?=
automatic
without acknowledgment
TESTS04.DSF
// Start forced checking procedure for
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11.03