Operator dialogue on CCX 17
Dialog operator on the CCX 17
Introduction The CCX 17 permits viewing and control of all the modifiable parameters of a PID corrector without having to program a specific aplication.
The dialog operator function integrates a control and adjustment application on the
CCX 17 application’s PIDs. It provides management of 3 types of screens on the
CCX 17 supporting selection of a PID, viewing and controlling of this PID and adjusting the parameters of the PID. It inserts itself easily into any dialog operator application on the CCX 17.
Note: This function is only effective if the PLC is in RUN.
Limitations There is no limit to the number of PIDs in the application. On the other hand, a maximum of 9 PIDs are accessible via the dialog operator function on the CCX 17-
30 and on the CCX 17-30.
Navigating from one screen to another is done via the CCX’s command buttons and within screens via the up and down arrow buttons. The navigation offered is a
"vertical" navigation. You must always return to the loop selection screen to gain access to the values of other correctors.
The display is done over 4 lines (8 lines with the CCX 17-30) with the messages in
40 characters.
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Operator dialogue on CCX 17
What the keys do
Position of the keys
Fixed messages
Functions
The MOD key supports switching from display mode to input mode (in this case, the selected value starts flashing).
On the same screen, the input mode remains active for all the fields and pressing MOD again allows you to exit the input mode (stopping the flashing).
In input mode, the modification of a parameter is acknowledged by pressing the ENTER key.
MOD ENTER
Set up principle Setting up the dialog operator is easy: l l the PID_MMI function(s) are started at each cycle (non-conditioned call), a single call to the PID_MMI function manages all the application’s PIDs.
However, a call from the PID_MMI function via CCX_17, which is connected to the PLC is necessary, l detection of the application’s PIDs via the PID_MMI function is automatic, including when adding or removing in RUN. Therefore there is no declaration to l do,
Identification of the required corrector is done via the "TAG" parameter from the
PID function and its selection depends on the value of the function’s
"DEVAL_MMI" parameter. (Only acknowledged via the PID_MMI function, the
PIDs whose DEVAL_MMI parameter is = 0).
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