Siemens S7-300 appendix Mpi, Ncm Pc

Glossary

MAC address

Each PROFINET device is assigned a worldwide unique device identifier in the factory. This 6-byte long device identifier is the MAC address.

The MAC address is divided up as follows:

•3 bytes vendor identifier and

•3 bytes device identifier (consecutive number).

The MAC address is normally printed on the front of the device.

Example: 08-00-06-6B-80-C0

Master

When a master is in possession of the token, it can send data to other nodes and request data from other nodes (= active node).

See Slave

Memory Card (MC)

Memory Cards are memory media for CPUs and CPs. They are implemented in the form of RAM or FEPROM. An MC differs from a Micro Memory Card only in its dimensions (MC is approximately the size of a credit card).

Micro Memory Card (MMC)

Micro Memory Cards are memory media for CPUs and CPs. Their only difference to the Memory Card is the smaller size.

Module parameters

Module parameters are values which can be used to configure module behavior. A distinction is made between static and dynamic module parameters.

MPI

The multipoint interface (MPI) is the programming device interface of SIMATIC S7. It enables multiple-node operation (PGs, text-based displays, OPs) on one or several PLCs. Each node is identified by a unique address (MPI address).

MPI address

See MPI

NCM PC

See SIMATIC NCM PC

CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05

Glossary-11