1-12 Saia-Burgess Controls Ltd.
PG5-WorkShop I Chapter 1 I Quick Start I 23.01.06
Editing symbols
Symbols reference the data needed by the PCD's user program, e.g. the stairway
lighting switches. We edit symbols in the connectors on the Fupla page. ‘Read’
symbols are on the left, ‘write’ symbols are on the right.
This stairway lighting example has 4 light switches as inputs (I 0, I 1, I 2 and I 3) and
one output (O 32) to drive the stairway lights. The required period of 5 minutes, during
which stairway lighting will be on, must be entered in the input connector as a multiple
of tenths of a second.
The value of this constant is therefore 3000 (5 min. x 60 sec. x 10 = 3000).
To add a connector and its symbol to a Fupla page, press the toolbar button Place
Connector and position the mouse on the Fupla page. A ‘read’ input connector is
added by clicking the left-hand mouse button. A ‘write’ output connector is added by
holding down the Shift key and pressing the left-hand mouse button. The connector
you have just added is ready to receive a symbol and a cursor is displayed inside the
connector. If you do not wish to edit the symbol inside the connector straight away,
press the ESC key and place the next connector.
To edit or modify a connector symbol already present on the Fupla page, select the
connector by double clicking quickly. A cursor will be displayed inside the connector.
It is now possible to enter the address I 0 to I 3, or output O 32, or the constant. Make
sure you always leave a space between the letter I and the input address. The same
applies for the output.
To edit the input symbols, 4 consecutive cells in the left-hand column of the program
screen are marked with the mouse and addresses I 0 to I 3 are entered. The time
constant 3000 (left) and output O 32 (right) are entered in the same way.
Please note that the address type (I or O) and address value (0 to 3 and 32) must be
separated by a space character.
The symbols will immediately appear in the Symbols window of the Symbol Editor. If
the symbol editor is not visible it can be displayed using the View, Symbols menu
command or by pressing the Show/Hide Symbol Editor toolbar button:
Note:
As a default, each new page may already provide margins with connectors on the left
and right. If you prefer new pages not to appear with these connectors, so that you
can place them yourself at your own convenience, please deactivate the
corresponding option with menu: View, Options…, Add Empty Side Connectors.
To remove any empty connectors present on the left or right of the page, select
menu: Page, Remove Empty connectors.
To place connectors once again on a blank page, select menu: Page, Add Empty
Side Connectors.
Place
Connectors
Show/Hide
S
mbol Editor