Siemens SIMATIC S7-300 Module data Reference Manual

Digital Modules
3-29
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
3.9.3 Behavior and Diagnostics of the SM 321; DI 16 x 24 VDC
Effect of operating and mode supply voltage on the input values
The input values of the SM 321; DI 16 x 24 DC depend on the operating mode of
the CPU and on the supply voltage of the module.
Table 3-11 Dependencies of Input Values on the Operating Mode of the CPU and Supply
Voltage L+ of the SM 321; DI 16 x VDC 24
CPU Operating State Power Supply L+
to Digital Module
Input Value of Digital
Module
POWER ON RUN L+ exists Process value
L+ missing 0 signal
STOP L+ exists Process value
L+ missing 0 signal
POWER OFF – L+ exists –
L+ missing –
Diagnostic Messages of the SM 321; DI 16 x 24 VDC
The table below presents an overview of the diagnostic messages for the SM 321;
DI 16 x 24 VDC.
Table 3-12 Diagnostic Messages of the SM 321; DI 16 x VDC 24
Diagnostics Message
LED Scope of the Diagno-
stics
Parameters
can be
assigned
Sensor supply missing SF Channel group
Yes
Wire-break SF Channel group
Yes
Module not parameterized. SF Channel group
External auxiliary supply missing SF Module
Internal auxiliary power missing SF Module
Fuse blown SF Module
Incorrect parameter on module SF Module
No
Watchdog timeout SF Module
No
EPROM error SF Module
RAM error SF Module
Hardware interrupt lost SF Module

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)