Siemens SIMATIC S7-400H - Usable Networks; Usable Communication Services

Communication
14.3 Usable networks
S7-400H
System Manual, 03/2012, A5E00267695-11
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14.3 Usable networks
Your choice of the physical transmission medium depends on the required expansion,
targeted fault tolerance, and transfer rate. The following bus systems are used for
communication with fault-tolerant systems:
● Industrial Ethernet
● PROFIBUS
Additional information on the networks that can be used is available in the relevant SIMATIC
NET documentation on PROFIBUS and Ethernet.
14.4 Usable communication services
The following services can be used:
● S7 communication via fault-tolerant S7 connections:
– via PROFIBUS
– Industrial Ethernet (ISO)
S7 fault-tolerant connections are only possible between SIMATIC-S7-400H stations,
or SIMATIC S7-400 stations with CPU41x-5H.
Fault-tolerant communication with PC stations is only possible over Industrial Ethernet
with ISO protocol and with ISO-on-TCP as of version 8.1.2.
– Via integrated PROFINET interface (ISOonTCP).
● Open communication via Industrial Ethernet
● S7 communication using S7 connections via MPI, PROFIBUS, and Industrial Ethernet
● Standard communication (e.g. FMS) via PROFIBUS
● S5-compatible communication (e.g. SEND and RECEIVE blocks) via PROFIBUS and
Industrial Ethernet
The following are not supported:
● S7 basic communication
● Global data communication
● PROFINET CBA