Sample/Update Times; Task Routine Times - Control Techniques Commander SK Advanced User's Manual

Introduction Parameter x.00
3.5

Sample/update times

The samples/update times shown in the control terminal specification within the Commander SK Product Data Guide are the default sample/update
times for the default terminal set-up. The sample/update time depends on the destination/source parameter of the digital or analog inputs/outputs.
These sample/update times are the sample or update times for the control microprocessor. The actual sample/update time maybe slightly longer due
to the design of the Commander SK.
3.5.1

Task routine times

At the beginning of each menu, there is a single line parameter description and this contains the update rate for each parameter. This time signifies
the task routine time in the software that the parameter is updated on. For a background task, the time depends on processor loading i.e. what
functions the drive is carrying out and what advanced menus are being used.
Update rate
2ms 2ms
5ms 5ms
21ms 21ms
128ms 128ms
Reset N/A
B Background
BR Background read
BW Background write
From practical tests carried out:
Time for drive to respond to a run command
Time for the drive to respond to a stop command
Time for the drive to respond to a step change in analog input voltage
Commander SK Advanced User Guide
Issue Number: 2
Parameter Keypad and
description format display
Microprocessor update time
Condition
www.controltechniques.com
User
CT Modbus RTU
programming
Comments
Updated every 2ms
Updated every 5ms
Updated every 21ms
Updated every 128ms
Destination/source parameter changed on a Reset
Updated as a background task. Update rate
depends on processor loading.
Minimum Maximum
4.1ms 5.62ms
2.82ms 3.94ms
Advanced parameter
CT Soft Menu 0
Average
5.02ms
3.31ms
7.93ms
descriptions
9