Siemens SIRIUS 3RK3 - Failure and Restoration in the Case of PROFIBUS

Con󹪝guring the DP interface as a PROFIBUS DP slave
The DP interface of the PROFIBUS DP slave is con󹪝gured with the con󹪝guring tool of the
PROFIBUS DP master (e.g. STEP 7). The slave properties (PROFIBUS address, DP process data
structure width 32-bit/64-bit) set in the con󹪝guring tool must be identical to the properties set
in Safety ES. Otherwise, the con󹪝guration is rejected by the DP interface.
WARNING
Hazardous system state due to unauthorized access via PROFIBUS
Can Cause Death, Serious Injury, or Property Damage.
Unauthorized access to the safety relay via PROFIBUS can enable con󹪝guration changes and
overriding of safety functions.
To prevent unauthorized access to the safety relay via the PROFIBUS network, assign a password
for accessing the device in Safety ES. If you operate several safety relays in one PROFIBUS
network, you must assign a separate password for each safety relay to prevent confusion when
accessing via PROFIBUS. In other words, the passwords must not be identical.
Installation of the GSD 󹪝le with STEP 7
You can 󹪝nd out how to install the GSD 󹪝le in the Online Help of STEP 7.
6.4.3 Failure and restoration in the case of PROFIBUS
PROFIBUS failure
The DP interface reports a PROFIBUS interruption to the safety relay. The safety relay then uses
the substitute value "0" for the PROFIBUS logic inputs. Safety mode is not exited. The bus failure
can be diagnosed in Safety ES.
Indication failure PROFIBUS
LED DP interface DP interface display Safety relay
DEVICE Green BF
DPXXX
Green
BF Red -
SF O󹪜 O󹪜
Operation
6.4 Integrating into DP master systems
SIRIUS 3RK3 Modular Safety System
196 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006