Response times
5.6 Reaction times of analog output modules
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
68
Manual, 03/2008, A5E01075975-02
Reference
Information on the conversion times can be found in the technical data of the
manual for the
relevant analog electronic module.
5.6
Reaction times of analog output modules
Conversion time
The conversion time of the analog output channels comprises the time for the transfer of the
digitized output values from internal memory and the digital/analog conversion.
Cycle time
The conversion of the analog output channels for the module takes place with a processing
time and sequentially with a conversion time for channels 0 and 1.
The cycle time, i.e. the time until an analog output value is converted again, is the sum of the
conversion times of all the activated analog output channels and of the processing time of
the analog output module.
The following figure provides you with an overview of what makes up the cycle time for an
analog output module.
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Figure 5-4
Cycle time of the analog output module
Settling time
The settling time (t
2
to t
3
) i.e. the time from the application of the converted value until the
specified value is obtained at the analog output - depends on the load. A distinction must be
drawn between resistive, capacitive, and inductive loads.
