Programmable Logic Controllers
Pico Controllers
PicoGFX Value Entry Functions
Timing Relay Entry Functional Description
This entry element enables you to make changes to time setpoint values at inputs I1 and I2 of the timing relay (T) at a later time.
Requirement: Inputs I1 and I2 of the function block are each defined with a constant. Inputs that are not assigned parameters cannot be edited via this entry element.
When the device is in RUN mode, the operator can thus make entries via the buttons on the visualization device and change the switch duration and on/off times of a switching contact. The new value entered is permanently stored in the program.
Function
Requirement for using the timing relay entry element:
The Timing relay function block is already incorporated in the program and the input to be modified is defined with a constant. Inputs that have not been assigned parameters cannot be modified.
This entry element is used to define the time parameters for either input I1 or I2. In order to keep the time setpoint I2 editable, for example, on the Flashing mode of the function block, you therefore need two of these entry elements.
The timing relay display element is provided as a counterpart to the timing relay value entry element.
In display mode, the element continuously shows the actual values of the device real-time clock. If the operator switches to the timing relay value entry element in a screen, the actual value is then frozen and used as the starting value for the entry. The value is displayed in the same way as in a display element. The entry is restricted to the permissible value range.
Scaling Entry Elements
Requirement: You have already selected the entry element to be edited in the current screen.
Displaying the entry element in the screen
The display depends on the time range set on the function block. There are three possible time ranges: S, M:S and H:M.
| Time Range | Display Format |
|---|---|
| S | SSS:ms |
| M:S | MM:SS |
| H : M | HH:MM |
Position the entry element as required and select a suitable element and font size.
.The timing relay value entry element allows you to display the font in two sizes.
| Possible Font Sizes | Max. number of lines/characters |
|---|---|
| Normal | 4/16 |
| Double | 2/8 |
Note: If the entry element only shows dashes such as -- : -- this means that there is no T function block at the selected operand number in the program.
Defining Parameters for Entry Elements
Associated Variable Tab
This entry element does not require an associated variable. The three corresponding list boxes are therefore dimmed.
Number
Select the function block 1-32 you wish to change.
FB parameters
Select the input I1, or for certain function block operating modes the input I2, with the time setpoint you wish to change.
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 enable or disable operator access to the entry element. In this way, you can prevent accidental changes to the real-time clock during RUN mode.
Simulating an Entry Element
You can simulate the value entry for this entry element using the "software buttons". These value entries are retained until the next STOP of the application. They do not, however, change the program parameters in the project. The general procedure is described in the Simulation View.
Operator Entry on the Visualization Device
To change the value of a screen entry element use the OK button, the cursor buttons < > ^ or v and the ESC button of the visualization device.