Profibus Dp(Drive) Interface (X3) - Siemens SIMATIC S7-300 Manual

Devices capable of MPI communication
• PG/PC
• OP/TD
• S7-300 / S7-400 with MPI interface
• S7-200 (with 19.2 kbaud only)
Properties of PROFIBUS DP
The PROFIBUS DP interface is mainly used to connect distributed I/O. PROFIBUS DP
allows you to create extensive subnets, for example.
The PROFIBUS DP interface can be set for operation in master or slave mode, and supports
transmission rates up to 12 Mbaud.
The CPU broadcasts its bus parameters (transmission rate, for example) via the PROFIBUS
DP interface when master mode is set. A PG, for example, can thus receive the correct
parameters and automatically connect to a PROFIBUS subnet. In your configuration you can
specify to disable bus parameter broadcasting.
Devices capable of PROFIBUS DP communication
• PG/PC
• OP/TD
• DP slaves
• DP master
• Actuators/sensors
• S7-300/S7-400 with PROFIBUS DP interface
5.1.3

PROFIBUS DP(DRIVE) interface (X3)

Properties
The PROFIBUS DP(DRIVE) interface is used to connect to drive systems. You can connect
drive systems in accordance with the PROFIdrive V3.0 profile.
The PROFIBUS DP(DRIVE) interface is configured as a master and supports transmission
rates up to 12 Mbaud.
The PROFIBUS DP(DRIVE) interface support isochronous mode.
The CPU sends its bus parameter settings (e.g. baud rate) via the PROFIBUS DP(DRIVE)
interface. In your configuration you can specify to disable bus parameter broadcasting.
Using the "Routing" function, you can access the drive parameters of the slaves in the
DP(DRIVE) line for the purposes of commissionng and diagnostics. However, diagnostics
cannot be performed via PROFIBUS DP(DRIVE) from the
S7-300 CPU Data: CPU 315T-2 DP
Manual, 12/2005, A5E00427933-02
Communication with the S7-300
5.1 Interfaces
STEP 7
user program.
5-3