Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Configuring
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
4-17
Connection block diagram
The figure below shows an S7-300 assembly with CPU 313, 314, 314 IFM, 315,
315-2 DP, 316-2 DP, 318-2 DP and floating reference potential. If you do not want
to ground reference potential, remove the jumper on the CPU between the M
terminal and functional ground. If the jumper is not installed, the reference potential
of the S7-300 is connected internally to the protective conductor over an RC
network and the profile rail. This discharges radio-frequency interference current
and avoids static charge.
M
L+
M
47 nF 1 MW
M
Ground bus
Figure 4-8 S7-300 configuration with floating reference potential
Note
Floating potential installation of an S7-300 with CPU 312 IFM or CPU 31xC is not
possible.

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)