Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Configuring
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
4-41
Example: Maximum distances in the MPI subnet
The figure below shows you:
• a possible MPI Subnet configuration
• maximum distances possible in an MPI subnet
• the principle of "Line extension" using RS485 repeaters
max. 50 m
max. 50 m
Terminating resistance on
S7-300
spur line
PG connected via spur line for maintenance purposes
0
0 ... x
MPI addresses of nodes
7
34
9
OP 27
PG
PG
OP 27
RS 485-
Repeater
RS 485-
Repeater
max.
1000 m
11
OP 27
S7-300
6
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
10
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
5
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
S7-300
8
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
Figure 4-15 Example: Maximum distances in the 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)