Siemens SIMATIC ET 200SP Manuel - Page 17

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2.6.3

PROFIBUS DP

With its optional PROFIBUS interface, CM DP, CPU 1510SP-1 PN supports the

configuration of PROFIBUS networks in addition to PROFINET IO.

PROFIBUS is the fieldbus network for the cell and field level. Physically, PROFIBUS is an

electrical network based on a shielded two-wire cable or an optical network based on a fiber

optic cable.

Data transfer via PROFIBUS DP provides a standardized interface (EN 50170 Vol. 2) for the

transfer of process input and process output data between a DP master and field devices

(DP slaves).

The transmission behavior via PROFIBUS DP is characterized by cyclical data exchange

between the DP master and the DP slaves.

A DP system based on the PROFIBUS DP standard (IEC 61158 Type 3) consists of the

following devices:

● DP master

A device of this function class handles the actual control task.

The device sends and receives process input and process output signals.

● DP slave

This is a device in the field area which reads or outputs the process signals. The devices

can be modular or compact.

Using the optional CM DP module, the CPU 1510SP-1 PN can be configured as a DP

master or as an intelligent DP slave (I-slave). The DP interface enables a transmission rate

of up to 12 Mbps.

When in master mode, the CPU sends its configured bus parameters on the PROFIBUS DP

interface. This means, for example, that a programming device can obtain the correct

parameters so that you can go online with the PG without any further settings. Transmission

of the bus parameters can be activated/deactivated in the configuration. As default, the CPU

sends the bus parameters.

Properties of the PROFIBUS DP interface of the CM DP module

The PROFIBUS DP interface of the optional CM DP module has the following properties and

functions:

● PROFIBUS DP master

● I-slave

● Time-of-day synchronization

● Line diagnostics

● S7 services

CPU 1510SP F-1 PN (6ES7510-1SJ00-0AB0)

Manual, 12/2014, A5E35264953-AA

Product overview

2.6 Functions