Communication
288 Function Manual, 11/2019, A5E03735815-AH
10.1 Overview of the routing mechanisms of S7-1500 CPUs
The following table gives an overview of the routing mechanisms of the S7-1500 CPU.
S7 routing S7 routing is the transfer of
data beyond S7 subnet bound-
aries. You can send information
from a transmitter to a receiver
across several s7 subnets.
Download user programs
Load hardware configuration
Execute testing and diagnostics func-
tions
S7 routing (Page 289)
IP forwarding IP forwarding is a function of
devices to forward IP packets
between two connected IP
subnets.
Simple access from the control level to
the field level for configuration and pa-
rameter assignment of devices, e.g. via
PDM or Web browser.
Simplified integration of devices for re-
mote access, e.g. for diagnostics during
remote maintenance or firmware update.
IP forwarding
(Page 294)
Data record routing Data can be sent over
PROFINET from an engineer-
ing station to field devices via
multiple networks. Since the
engineering station addresses
the field devices using stand-
ardized records and these rec-
ords are routed via S7 devices,
the term "data record routing" is
used to refer to this type of
Data record routing is used, for example,
when field devices of different manufac-
turers are used. The field devices are
addressed using standardized data
records ( PROFINET) for configuration
and diagnostics.
Data record routing
(Page 301)
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