Tuning; Switching To The Tuning Screen - Omron CX-PROCESS TOOL V5.2 - REV 10-2010 Operation Manual

Tuning

4-7

Tuning

4-7-1 Switching to the Tuning Screen

1, 2, 3...
294
PID constants, SPs, and other settings listed below can be changed online.
• Parameters such as the PID Block's P, I, and D constants, and the alarm set
values can be set.
• The PV, SP, and MV trends can be adjusted while monitoring.
• If an alarm occurs, the bar graph color changes.
With CX-Process Tool version 3.2 or higher, specified ITEMs in function blocks
being displayed on Tuning Screens can be logged and output to CSV files.
Use the following procedure.
1. Select the function block to be tuned and select Monitor/Tuning Screen
from the Execution menu.
2. The Tuning Screen Configuration Dialog Box will be displayed.
Note This dialog box resembles the dialog used to set monitor tags. (Dis-
played by selecting Monitor Tags from the Settings menu.)
Use this dialog box to input settings for the function block, including the Tag
name, Scaling range (Scaling Upper Limit and Scaling Lower Limit), Deci-
mal Point, and Unit. (See note a.) After inputting the desired values, click the
OK Button.
With version 3.0 or higher of the CX-Process Tool, the monitoring cycle for
data (such as PVs, SPs, and alarms) on the Tuning Screens can be set to
1 s or 200 ms. (With unit Ver. 2.5, the cycle was fixed at 1 s.) (See notes b
and c.) Select either 1 s or 200 ms before clicking the OK Button.
If the data cannot be refreshed for the specified cycle, a warning will be dis-
played in red to indicate that the monitoring cycle is longer than the specified
value as follows:
Blue: The cycle is within the specified value (1 s or 200 ms).
Red: The cycle is not within the specified value (1 s or 200 ms).
Note a) The Scaling range (upper limit and lower limit), Decimal point
position, and Units settings apply to all of the function block's SP
and PV values.
b) This setting is also used for the data logging cycle.
c) Setting the data monitoring cycle to 200 ms does not necessarily
mean that the refresh cycle will be 200 ms because the load on the
computer and other factors will affect it. Use this setting as a
guideline only.
• With CX-Process Tool version 3.2 or higher, operation can be set so that
data logging for specific ITEMs (such as the PV, SP, and MV) is started
when a Tuning Screen is opened and then the logged data is saved in an
CSV file when the Tuning Screen is closed. The data logging cycle is the
same as the data monitoring cycle (either 200 ms or 1 s).
Section 4-7