Xylem System 5000 User Manual - Manual (Page 75)

Outputs
73
Basic Program (Output)
Basic Programs can be used as either
Inputs, Outputs, or Network Programs.
Basic Programs available to be used as
Outputs will be selectable from within the
Add Output menus. If no Basic programs
have been installed or selected as Output
programs, the Basic Programs group will
not be shown in the Add Output menu.
The screen to the right shows a Basic
Program with the name DRGS (DAMS-NT)
that is being used as an Output for a Task.
If a Basic Program does not have a name
declared, the program’s filename (e.g.
drgs.bas) will be used as the program
name and title of the Properties screen.
The Basic Program can be viewed or debugged using the View and Debug buttons. It
is a good idea to test (Debug) each Basic program before enabling scanning to verify the program
will run as expected.
Any special variables, known as Symbols, within the Basic Program will be listed in the
Variable’s box. These variables can be modified individually for each Task by using the Edit
Value button, allowing the same Program to be used in different circumstances, if desired.
More information regarding Basic can be found in Chapter 7 of this manual as well as within the
Basic 5000 User Manual, downloadable from the waterlog.com web site.
Program
4-20mA Out
The 4-20mA Output is found at the end of
the bottom row of ports, next to the Analog
ground channel (Agnd) on the front panel
of the System 5000
™
. Using the 4-20mA
Output, the System 5000
™
can be set up
to generate a current output simulating a
4-20mA sensor. The System 5000
™
does
not actually generate the current in the
loop but controls the current in a loop
that is externally powered. The 4-20mA
connection points are optically isolated
from the rest of the circuitry.