Response times
5.7 Response times for a 4 IQ-SENSE electronic module
IM151-1 FO STANDARD interface module (6ES7151-1AB05-0AB0)
64
Manual, 02/2010, A5E01075965-03
Response time
The response time (t
1
to t
3
) i.e., the time from the application of the digital output values in
internal memory until the specified value is obtained at the analog output - is, in the most
unfavorable case, the sum of the cycle time and the settling time. The most unfavorable case
is when the analog channel is converted shortly before the transfer of a new output value
and is not converted again until after the conversion of the other channels (cycle time).
This figure shows the response time of an analog output channel:
W
$
W
=
W
W
W
W
(
t
A
Response time
t
Z
Cycle time, corresponding to the processing time of the module and the conversion time of
the channel
t
E
Settling time
t
1
new digital value applied
t
2
output value transferred and converted
t
3
specified output value obtained
Figure 5-5
Response time of an analog output channel
Reference
Information on the conversion times can be found in the technical data of the
manual for the
relevant analog electronic module.
5.7
Response times for a 4 IQ-SENSE electronic module
The response time of the 4 IQ-SENSE electronic module is specified as a cycle time in the
Technical Data.
5.8
Response times for technology modules
The response times of the technology modules are specified as response time or update rate
in the Technical Data. See
ET 200S Technological Functions Manual.
