Siemens SINUMERIK 840D sl Function Manual page 216

Safety integrated

Hide thumbs Also See for SINUMERIK 840D sl:

Table of Contents

Connecting sensors and actuators

8.4 Safety-related CPU-CPU communication (F_DP communication)

With SINUMERIK 840D sl, a maximum of sixteen safety-relevant send connections and sixteen

safety-relevant receive connections can be configured for each NCU (option "SI Connect").

The diagram is an example - for I Device, the PN/PN coupler can be eliminated.

SIMATIC F-CPUs that support the F_SENDDP/F_RCVDP blocks are suitable as

communication partner, e.g. IM151F.

The chapter only describes the SINUMERIK-specific safety-related CPU-CPU communication

to couple plants and systems corresponding to the SIMATIC F_SENDDP/F_RCVDP protocol

specifications. SINUMERIK does not support SIMATIC S7 communication with F_SENDS7/

When configuring F-DP communication between two F-CPUs, an input and output range must

be defined via SIMATIC Step 7 via which the F-telegrams are exchanged. The start address

(logical basis address) can be freely selected. However, within an F-CPU it must be the same

for the input and output ranges. However, a different start address can be used in the two F-

An F-DP communication always comprises a sender (F_SENDDP) and a receiver

(F_RECVDP). Only the sender (in the diagram F_SENDDP of the F-CPU1) transfers F-net

data - in the F-net data telegram - to the receiver (in the diagram F_RECVDP of F-CPU2). The

receiver only acknowledges the receipt of the F-net data telegram using an F-acknowledgment

telegram. The F-acknowledgment telegram does not contain any F-net data.

Function Manual, 12/2017, 6FC5397-4BP40-6BA1

Safety Integrated