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7 multipoint interface (mpi) – Siemens Simatic S7-400 User Manual

Page 443

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CPUs for M7-400

11-15

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

11.3.7

Multipoint Interface (MPI)

X1 Interface

The X1 interface of the CPU 486-3 and CPU 488-3 for connecting devices such as
PCs/programming devices is a multipoint interface (MPI) and is connected via a
9-pin sub D connector.

Suitable Devices

You can connect the following at the MPI:

Programming devices (PGs/PCs)

Operator panels (OPs)

Additional CPUs.

You can address up to 127 communications partners (programming devices, OPs,
CPUs) via the multipoint interface of the CPU 486-3 and CPU 488-3. A maximum
of 44 connections can be made to the CPU.

Connectors

Use only bus connectors or PG cables for connecting devices to the MPI (see
Chapter 6).

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