ABB AC500-S Safety User Manual page 37

A complex system containing multiple AC500-S sub-systems connected together via PROFIsafe
needs some additional consideration on how to allocate F_Dest_Add and F_Source_Add
addresses because messages from different F-Hosts can overlap in the "Black Channel", for
example in non-safety CPU. The potential overlapping may increase the probability of dan-
gerous error in the safety configuration and communication. The typical PFH value for
PROFIsafe communication is 3.0E-10.
The allowed range for F_Dest_Add addresses is described in
and configuration of safety modules / definition of variable names" on page 133.
2020/06/19
DANGER!
For each AC500-S sub-system, which PROFIsafe communication can overlap
in the "Black Channel" with the PROFIsafe communication from another F-Host,
a pair of F_Dest_Add and F_Source_Add (so-called codename in PROFIsafe
terminology Ä [3]) have to be unique. If only F_Dest_Add is checked by the F-
Device (e.g., using hardware address settings on it), then not only codenames
but also F_Dest_Add shall be unique. In case of SM560-S-FD-1 and
SM560-S-FD-4, due to the fact that PROFIsafe communication from different F-
Hosts (PROFIsafe telegrams from own F-Host on SM560-S-FD-1 or
SM560-S-FD-4 and PROFIsafe telegrams from external F-Hosts) will overlap on
non-safety CPU, additional measures to unique codenames shall be applied:
– Unique F_Dest_Add for all F-Devices belonging to external F-Host(s) and
own F-Host on SM560-S-FD-1 or SM560-S-FD-4 safety CPUs.
NOTICE!
Only F_Dest_Add is used for PROFIsafe F-Device identification in
SM560-S-FD-1 and SM560-S-FD-4.
3ADR025091M0208, 12, en_US
Safety CPU - SM560-S / SM560-S-FD-1 / SM560-S-FD-4 > Functionality
Ä Chapter 4.3.5 "Instantiation
AC500-S safety modules
37