Siemens SINUMERIK 840D sl Configuration Manual page 185

Requirement
● The software options for Safety Integrated (SPL) are licensed and enabled in the
associated machine data.
● A maximum of three different F-source addresses are used in the configuration.
You can view the used F-source addresses in the PLC properties under "Fail-safe > F-
parameters". If more than three different F-source addresses are used, you must
standardize the F-source addresses because a maximum of 3 different F-source
addresses can be entered in the MD10385.
● The current configuration is compiled and loaded into the PLC.
● The MD10385, MD10386, MD10387, MD10388 and MD10389 machine data items are
not yet filled.
● No red LED illuminates on the F-peripherals.
If a red LED illuminates, check and correct the DIL switch setting or the F-source
address, e.g. using online diagnosis.
SINUMERIK STEP 7 Toolbox V14 SP1
Configuration Manual, 05/2017, A5E41846325
Safety configuration
9.7 Configuring Safety Integrated (SPL)
185