Siemens SIMATIC S7-300 Module data Reference Manual

Digital Modules
3-77
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
3.23.2 Behavior and Diagnostics of the SM 322; DO 8 x 24 VDC/0.5 A
Effect of operating and mode supply voltage on the output values
The output values of the SM 322; DO 8 x 24 VDC/0.5 A depend on the operating
mode of the CPU and on the supply voltage of the module.
Table 3-19 Dependence of the output values on the operating mode of the CPU and on the
supply voltage L+ of the SM 322; DO 8 x 24 VDC/0.5 A.
CPU Operating State Power Supply L+ to Digital
Module
Output Value of Digital
Module
POWER ON RUN L+ exists CPU value
L+ missing 0 signal
STOP L+ exists Substitute value/last value
(0 signal preset)
L+ missing 0 signal
POWER
OFF
– L+ exists 0 signal
OFF
L+ missing 0 signal
Behavior upon failure of the supply voltage
Failure of the supply voltage of the SM 322; DO 8 x 24 VDC/0.5 A is always
indicated by the SF LED on the module. Furthermore, this information is made
available on the module (entry in diagnosis).
Triggering of the diagnostic interrupt depends on the parameter assignment
(see Section 3.23.3).

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)