Siemens SIMATIC S7-300 Module data Reference Manual

Digital Modules
3-24
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Terminal assignment for redundant supply of encoders
The figure below shows how encoder can additionally be supplied by means of Vs
with a redundant voltage source – for example, via another module).
Vs
M
L+
1 L+
2 L+
to the sensors
±
Digital input
module
Short-circuit-
proof driver
Figure 3-7 Terminal assignment for redundant supply of encoders of SM 321;
DI 16 x VDC 24
Terminal assignment for resistive circuit of the encoder
In order to detect a broken wire, it is necessary to wire the encoder contact with a
resistor.
L +/ V
s E x.x
15 k

... 18 k

Figure 3-8 Terminal assignment for resistive circuit of the encoder of the SM 321;
DI 16 x 24 VDC

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)