Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Configuring
S7-300 Programmable Controller Hardware and Installation
4-40 A5E00105492-01
4.10.6 Network samples
Example: MPI subnet
The figure below shows you the block diagram of an MPI subnet.
0 ... x
0
PG*
12
OP 27
10
OP 27
5
PG
1
OP 27**
*Connected via spur lines for commisioning/maintenance only
(with default MPI address).
** connected to the MPI subnet later (with default MPI address).
*** the CP also has a PROFIBUS address in addition to the MPI address ( address 7 here).
**** In the case of the CPU 318-2 DP, the FMs/CPs do not have their own MPI address. In the case
of the S7 300 CPUs, (without CPU 318-2 DP) you can also allocate MPI addresses as you wish.
MPI addresses of nodes
Terminating resistance on
S7-300
3
SF
BUSF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
11
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300**
2
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
4
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
13
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
6
CP****
7
PROFI-
BUS-
Subnetwork
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
9
FM****
8
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
Figure 4-14 Example of an MPI subnet

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)