Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-115
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
4.22 Analog Input Module SM 331; AI 8 x 12 bits;
(6ES7331-7KF02-0AB0)
Order number
6ES7331-7KF02-0AB0
Characteristics
The analog input module SM 331; AI 8 x 12 bits has the following characteristic
features:
• 8 inputs in 4 channel groups
• Measured-value resolution; settable per group (depending on the integration
time set)
– 9 bits + sign
– 12 bits + sign
– 14 bits + sign
• Measuring method selectable per channel group:
– Voltage
– Current
– Resistors
– Temperature
• Arbitrary measuring range selection per channel group
• Programmable diagnostics
• Programmable diagnostic interrupt
• Two channels with limit monitoring
• Programmable hardware interrupt when limit has been exceeded
• Isolated against the backplane bus interface
• Isolated against load voltage (except when at least one
coding key is inserted in position D)
Resolution
The resolution of the measured value is a direct function of the integration time
selected. In other words the longer the integration time for an analog input channel,
the more accurate the resolution of the measured value will be (see Technical
Specifications of the module and Table 4-6 on page 4-10).

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)