SIEMENS
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Siemens IK PI · 2015
PROFINET/Industrial Ethernet
Communication for SIMATIC S7-400
CP 443-1 RNA
2
■
Overview
Communication processor for connecting a
SIMATIC S7-400/S7-400H to Industrial Ethernet networks.
The CP supports:
•
PG/OP communication
•
S7 communication
•
Open communication (SEND/RECEIVE)
The communications processor can be used in SIMATIC H
systems and for fail-safe applications (PROFIsafe) in connection
with an S7-400 F-CPU. The CP 443-1 RNA (
R
edundant
N
etwork
A
ccess)
1)
offers the option of using the PRP procedure (
P
arallel
R
edundancy
P
rotocol in accordance with IEC 62439-3) to
connect an S7-400 or S7-400H to parallel, separate networks
where high availability is required.
The PRP functionality can be deactivated so that standard
Industrial Ethernet communication is also possible with the CP.
The PRP redundancy procedure is based on double transmis-
sion of message frames over two separate networks (LAN A,
LAN B). In the event of a fault in one of the two networks, trans-
mission of the message frame from the second network is
ensured without delay. A reconfiguration time (switchover of the
communication paths) for the network, such as is required with
other redundancy procedures, is thus not necessary.
1)
At Siemens Industry, RNA stands for hardware and software to implement
redundancy solutions. RNA contains the PRP V1 protocol in accordance
with the IEC 62439-3 standard (Parallel Redundancy Protocol) as well as
the HSR protocol in accordance with IEC 62439-3 (High-availability
Seamless Redundancy Protocol).
■
Benefits
•
Cost advantage due to connection to two separate Ethernet
segments with integrated network separation
•
High plant availability through the support of media redun-
dancy (MRP) and use in the SIMATIC S7-400 H system
•
Use in plants with high availability requirements
•
Use in time-critical applications, since there is bumpless
switchover in the event of a fault on the network
•
Simple integration, since no additional programming
overhead required for communication via PRP (transparent at
application level)
•
Optimum support of maintenance through
- Web-based diagnostics
- Remote programming via WAN or telephone network (ISDN)
- Monitoring with IT network management tools (SNMP)
- Module replacement without programming device using the
C-PLUG swap medium
•
Investment protection thanks to later connection of existing
SIMATIC S7 systems to redundant, parallel networks using the
CP 443-1 RNA
•
The simple, single interfaces of the SEND/RECEIVE blocks
enable straightforward parameterization and programming for
customized communication requirements
G_IK10_XX_10151
S7/S5
PG/OP
IP-R
IT
PRP
PN
TCP/
UDP
ISO
© Siemens AG 2014