Installing the S7-400
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Automation System S7-400 Hardware and Installation
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2.15 Methods of Expansion and Networking
Introduction
Apart from the structures mentioned in this chapter, other expansions are possible,
for example, by connecting distributed I/Os or by networking.
Distributed I/Os
When an S7-400 is configured with a distributed I/O system, the inputs/outputs
operate in a distributed local arrangement and are directly connected v ia
PROFIBUS DP to a CPU.
One of the master-capable CPUs of the S7-400 is used.
You can use the following devices, for example, as slaves, i.e. as local
inputs/outputs:
• ET 200M
• ET 200S
• ET 200X
• ET 200eco
• All DP standard slaves
Networking
You may connect your S7-400 to various subnets:
• via Simatic Net CP Ethernet to an Industrial Ethernet subnet
• via Simatic Net CP Profibus to a Profibus DP subnet
• via the integrated MPI interface to an MPI subnet
• via the integrated Profibus DP interface to a PROFIBUS DP subnet
See Chapter 5 for further details.
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