Omron CS1W-LC001 Operation Manual page 123

Description of Operation
Example
3-2-10-3 Monitoring the load rate at the trial operation stage
1, 2, 3...
Note The resolution of load rate measurement is 10 ms (the value smaller than 10
ms is discarded).
The resolution of display value according to operation cycle is as follows.
Operation cycle
0.1 sec.
0.2 sec.
0.5 sec.
1 sec.
2 sec.
Load rate at 0.1 sec. = 20 ms Á 100 ms x 100 = 20% (acceptable as it is
smaller than 60 %)
Load rate at 0.2 sec. = 30 ms Á 200 ms x 100 = 15% (acceptable as it is
smaller than 60%)
Load rate at 0.5 sec. = 60 ms Á 500 ms x 100 = 12% (acceptable as it is
smaller than 60%)
Load rate at 1 sec. = 130 ms Á 1000 ms x 100 = 13% (acceptable as it is
smaller than 60%)
Load rate at 2 sec. = 40 ms Á 2000 ms x 100 = 2% (acceptable as it is
smaller than 60%)
At the trial operation stage, monitor which value the load rate actually
reaches at the preset operation cycle(s) on CX-Process Monitor.
Follow the procedure below to monitor the load rate.
1. Download the function block data to the Loop Control Unit.
2. Start running of the Loop Control Unit using CX-Process Tool or by
turning the PC power OFF then back ON again.
3. Establish the connection to CX-Process Monitor, and select [Operation]-
[Run monitor status] from the [Execute] menu.
The following load rates (current load rate and maximum load rate) are
displayed in the Run monitor status screen:
Each of the current load rates and maximum load rates for the system
common operation cycle and each of the 0.1 sec./0.2 sec./0.5 sec./1
sec./2 sec. operation cycle groups
If the maximum load rate of a certain operation cycle group exceeds
60%, change the operation cycle of function blocks among function
blocks within that group, for which an increased operation cycle will not
affect the application, to a longer operation cycle (group).
If it is estimated that an operation cycle longer than this cannot be set
when the load rate exceeds 60%, add on another Loop Control Unit (up
to three Loop Control Units can be mounted on a single PC) and
distribute processing between the mounted Units.
Resolution of display value
10%
5%
2%
1%
1%
Section 3-2
105