• The DP interface is equipped with one system interface for connecting the safety relay and
one device interface for connecting a PC/PG (sealable).
• The DP interface can be used to link non-safety-related signals of a higher-level controller
with the safety relay logic.
• The DP interface supports a baud rate of up to 12 Mbps.
• Process and diagnostics data can be exchanged through the DP interface:
– Cyclic: Depending on the safety relay, the PLC can exchange 32 bits or 64 bits of process
data with safety relay.
– Acyclic: The PLC can query diagnostics data data from the safety relay. With Safety ES, the
diagnostics information can be displayed graphically.
Both options can be used at the same time.
• The DP interface supports DPV1 and DPV0 mode.
Note
Program cycle time
When the 3SK2 safety relays with product version E01 are operated with a DP interface, set a
program cycle time of 15 ms.
You will nd further information in Chapter "Using data sets (Page 288)".
Design of the DP interface module
Front view No. Meaning
① Removable terminal block D
② Removable terminal block C
③ System interface (X2)
④ PROFIBUS DP connection
⑤ Removable terminal block A
⑥ SET and MODE keys for
operating the device display
⑦ Label
⑧ LCD display
⑨ Display LEDs
⑩ Connection of PC / PG, diagnostics display
(X1)
Description of the hardware
5.1 Description of the individual modules
SIRIUS 3RK3 Modular Safety System
118 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
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