Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-102
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Calculation of the filter and processing time
Independent of the number parameterized channels, the same time conditions are
always valid. The time related to the clock signal for the reading of a specific
channel is calculated according to the formula:
T
WE
_CH = (Channel number +1) x 52 s + tv; tv = 119 to 209 s
CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0
52s52s52s52s52s52s52s52s 209s
A/D conversion internal processing (tv)
T
WE
Figure 4-38 Calculation of the filter and processing time
Explanation of the mode of operation in synchronous operation
The module begins with the A/D conversion of channel 7 and saves this result
internally. Then channels 6...0 are converted sequentially at intervals of 52 s in
the same way. After a further internal processing time the result becomes available
to all converted channels at the backplane bus for collection by the CPU.
Further information
Further information on synchronicity can be found in the Online help of STEP 7, in
the manualLocal peripheral system ET 200M and in the manual Synchronicity.

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)