Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Commissioning
S7-300 Programmable Controller Hardware and Installation
8-26 A5E00105492-01
8.7.2 Commissioning the CPU as DP Master
Prerequisites for commissioning
• The PROFIBUS subnet has been configured.
• The DP slaves are ready for operation (see relevant DP slave manual).
• An MPI/DP interface as DP interface must be configured accordingly (only CPU
318-2).
• You must configure the CPU as DP master prior to commissioning. That is, in
STEP 7 you must:
– configure the CPU as a DP master,
– assign a PROFIBUS address to the CPU,
– assign a master diagnostic address to the CPU,
– integrate the DP slaves into the DP master system.
Is a CPU 31x-2 DP/31xC-2 DP a DP Slave?
If so, you will find that DP slave in the PROFIBUS-DP catalog as already
configured station. In the DP master, assign a slave diagnostic address to
this DP Slave CPU. You must interconnect the DP master with the DP slave
CPU and specify the address areas for data exchange with the DP slave
CPU.
Commissioning
Commission CPU 31x-2 DP/31xC-2 DP as DP master in the PROFIBUS subnet as
follows:
1. Download the PROFIBUS subnet configuration (preset configuration) you have
created in STEP 7 from the PG to CPU 31x-2 DP/31xC-2 DP.
2. Switch on all of the DP slaves.
3. Switch CPU 31x-2 DP/31xC-2 DP from STOP to RUN mode.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)