Programmable Logic Controllers
Pico Controllers
PicoGFX Value Display Functions
Timing Relay Display Functional Description
This display element can be used in a screen to display the time information of the timing relay (T) function block.
Requirement for using the Timing relay display element: The timing relay function block is already in the program.
Function
The display element shows the process value of an associated variable as a time. The display depends on the time range you have set.
If the process value is outside of the range of values supported by the time range, an overflow or underflow will be indicated with an arrow and the following displays
The timing relay display element is provided as a counterpart to the timing relay value entry element.
Scaling Display Elements
Requirement: You have already selected the display element to be edited in the current screen.
Displaying the display element in the screen
The display depends on the time range set. There are three possible time ranges: S, M:S and H:M.
| Time range | Display format |
|---|---|
| S | SSS:ms 7 places |
| M:S | MM:SS 5 places |
| H:M | HH:MM 5 places |
If you select the output of a function block as the associated variable, the display will depend on the time range set in the function block.
If you select a marker double word as the associated variable, the display will depend on the time range set for the display element.
- Position the display element as required and select a suitable element and font size.
| Possible font sizes | Max. number of lines/characters |
|---|---|
| Normal | 4/16 |
| Double | 2/8 |
Note: If you have transferred the entry element to the screen, adjusted its size accordingly and the display only shows five dashes -----, this means that the selected operand number is not assigned a T function block in the program.
Setting Display Element Parameters
Associated Variable Tab
The time information that is to be displayed with this element can be read from a marker double word in which the Timing relay function block enters its actual value. The function block output can also be linked directly in order to display the actual value. The I1/I2 inputs of a timing relay can be associated in order to display its setpoints.
Marker associated variable
- In the Number list box defined the appropriate marker double word (MD1-MD96).
- Define the time range parameters in order to set the display of the element.
Function block I/O associated variables
- Select this associated variable if you wish to transfer the time information of the function block directly from its output or accept the setpoint from one of the inputs.
- In the Number list box define the number (1-32) of the function block used and in the FB parameter list box an I1/I2 input or the output.
Number
- As described above select the appropriate marker double word or the function block used.
FB parameters
- Select as associated variable function block inputs and outputs, an I1 or I2 input or the QV output.
Time range
- Define here the display of the element if you are using a marker double word as the associated variable.
Visibility Tab
A Boolean associated variable can be used to show/hide the screen element in the screen.
Operability tab
A Boolean associated variable can be used to disable access to the display element. In this way, you can prevent accidental changes to the real-time clock during RUN mode.
Simulating the Display Element
You can show this display element as part of a screen in the offline display. The general procedure is described in the Simulation View.