Phonetics Sensaphone SCADA 3000, Руководство пользователя

Страница: 181 / 336

To delete instructions, click on the Instruction and click the
Delete
button from the toolbar; or
right-click on the instruction and choose Delete from the menu.
Syntax Checking
You can check your program for instruction and address errors by selecting the Syntax Check
button from the toolbar, or by clicking
Program>Syntax Check
from the main menu. If any
errors are found, the instruction with the error will be highlighted in red. The syntax checker
will locate errors one at a time. Continue running the syntax check program until all errors are
eliminated. Syntax check status will be displayed on the lower righthand side of the screen.
Compiling, Verifying and Uploading
The ladder program must be compiled before it can be uploaded to the SCADA 3000. The
unit will support up to 32K of compiled code, with the option of also storing up to 32K of
source code. Compiling translates the graphical instructions into a sequential file that can be
read by the SCADA 3000. In addition, the program will be checked for missing or incomplete
addresses and illegal logic. If any errors are detected they will be listed on the screen. Once
you correct the errors be sure to re-compile the program before uploading it. To Compile the
program click on Program , then Compile and Upload , or click on the Compile and Upload button
from the toolbar. Once your program compiles without errors, you can upload it by clicking
the
Yes
button at the prompt.
Running and Stopping Ladder execution
The ladder program is controlled by the Ladder and C-Program Start/Stop form located on
the SCADA 3000 Main Programming form. This is accessed by clicking the Start/Stop button
on the Main Programming toolbar, or by selecting Programming , then Control from the main
menu.
Figure 6: Start/Stop form
The Ladder and C-Program Start/Stop screen provides information, timing measurements
and options. At the top of the screen is an option which determines how the outputs (relay &
analog) are treated when the Control Switch is placed in the Disable position. If the option
is not set, then the outputs will remain in the state they were in when the switch is placed in
the Disable position. When the option is set, all unforced relay outputs will be switched OFF
and all analog outputs will be set to their low table value. Forced outputs are unaffected by the
position of the control switch. To enable this option, click in the option box at the top of the
screen.
The Start/Stop form also indicates: if control programs are running or stopped; if valid Ladder
or C-Programs are loaded; if control programs are enabled or disabled. It also provides control
program timing information. The timing statistics are described below.
Duration: Amount of time for the Ladder or C-Program to execute.
15-21
Chapter 15: Ladder Logic Programming