Siemens SIMATIC S7-300 CPU Data: CPU 315-T-2 DP User Manual

Communication with the S7-300
5.3 Communication services on the MPI/DP interface (X1)
Reference
Further information
• about SFCs can be found in the
Instruction list , for more details refer to the STEP 7
online help
and to the System and Standard Functions reference manual.
• on communication can be found in the
Communication with SIMATIC manual.
5.3.7 Routing
Definition
The routing function enables you to attach a PG/PC at any point in the network and establish
a connection to all drives accessible via gateways.
Accessing drives in a DP(DRIVE) subnet from a PG/PC
Test, diagnostic and parameterizing functions can be routed via the MPI/DP interface (X1) to
the DP(DRIVE) subnet with the Technology CPU.
The Technology CPU provides a certain number of connection resources for routing. These
connections are available in addition to the S7 connection resources.
The number of routing connections can be found in the Technical Specifications.
Network gateway
Gateways between subnets are routed in a SIMATIC station that is equipped with interfaces
to the respective subnets. The figure below shows the Technology CPU (DP master) acting
as router for subnets 1 and 2.
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Figure 5-2 Routing - network gateway
S7-300 CPU Data: CPU 315T-2 DP
Manual, 12/2005, A5E00427933-02
5-11

Siemens SIMATIC S7-300 CPU Data: CPU 315-T-2 DP Specifications

General

Programming Language	STEP 7
Power Supply	24 V DC
Number of DP masters	1
Processable Technology objects	Yes
Number of counters	256
Number of timers	256
S7 communication	Yes
Number of connections for S7 communication, max.	16
PG/OP communication	Yes
Global data communication	Yes
Integrated DP interface	Yes
Integrated PROFINET interface	No
SIMATIC Computing Platform	No
Operating Temperature	0 to 60 °C
Integrated Interfaces	MPI, DP
Communication	PROFIBUS DP
Cycle Time	0.1 ms
Engineering with	STEP 7
Backup available	Yes
Transmission rate, max.	12 Mbit/s