Siemens Sinamics S110 Function Manual page 292

Drive functions
7.3 Function modules
Sampling times
Two types of sampling times are available for runtime groups:
● Sampling times generated in the hardware:
Note
As regards offline configuration using STARTER commissioning software, values 0 ...
256 can be entered in p20000[x], even if this violates the limits stated above for the
hardware sampling times from 1 ms ... r20003 - r20002 and r20003.
This will only be detected after the Control Unit has been downloaded and generates fault
F01042 (parameter error during project download).
● Sampling times generated in the software:
Note
When p20000[k] = 0, the corresponding runtime group (and, in turn, all the associated
function blocks) is not computed.
290
Every integer multiple of the basic sampling time (r20002) can be generated as a
sampling time in p20000[0...9] in the range from 1 x r20002 to 256 x r20002, subject to
the following limits:
– Min. sampling time = 1 ms
– Max. sampling time = r20003
Sampling times of 1 ms ... r20003 - r20002 are generated in the hardware from these.
The basic sampling time for the SERVO drive object type in SINAMICS S110 is as
follows:
r20002 = 0.25 ms (current controller sampling time)
These sampling times are generated as integer multiples of the basic value for software
sampling times and must be read in parameter r20003 when the "free function blocks"
function module is active.
For the possible set values for the software sampling times, refer to the parameter
description for p20000 (see SINAMICS S110 List Manual).
The sampling time of runtime group k is displayed in r20001[k] in ms.
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Function Manual