Siemens SIMATIC S7-300 Module data User Manual

Digital modules
3.13 Digital input module SM 321; DI 16 x 48-125 VDC; (6ES7321-1CH20-0AA0)
S7-300 Automation System Module data
3-38 Manual, 08/2006, A5E00105505-04
3.13 3.13 Digital input module SM 321; DI 16 x 48-125 VDC;
(6ES7321-1CH20-0AA0)
Order number: "Standard module"
6ES7321-1CH20-0AA0
Order number: "SIPLUS S7-300 module"
6AG1 321-1CH20-2AA0
Properties
Properties of SM 321; DI 16 x DC 48-125 V:
● 16 inputs, electrically isolated in groups of 8
● Rated input voltage 48 VDC to 125 VDC
● suitable for switches and 2- /3-/4-wire proximity switches (BEROs)
Wiring and block diagrams of SM 321; DI 16 x DC 48-125 V
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① Channel number
② Status display - green
③ Backplane bus interface

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)