Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-134
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Table 4-70 Scan Times in “Software Filter, 8 Channels” Mode
Programmed
Interference Frequency
Suppression
Channel Scan Time* Module Scan Time (All
Channels)
50 Hz 42 ms 84 ms
60 Hz 37 ms 74 ms
400 Hz 20 ms 40 ms
* Channel scan time = channel conversion time + 12 ms switching time to the other channel
in the channel group
Scan time in “Hardware Filter, 4 Channels” mode
In this mode, the module does not switch between the channels of the different
groups. As the module contains four analog/digital converters (ADC), all four of the
ADCs convert simultaneously for channels 0, 2, 4 and 6.
Scan time
Start analog conversion
(simultaneous)
K0 K2 K4 K6
Figure 4-44 Hardware filter 4 channels scan time
Scan time of the module
In 4-channel hardware filter mode, the channel conversion time including the
communication time of the analog input module SM 331; AI 8 x RTD is 10 ms. As
the module does not switch over between the channels in a group, the channel
scan time and the module scan time are the same: 10 ms.
Channel conversion time = channel scan time = module scan time = 10 ms

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)