Table of Contents
Advertisement
ATTENTION
Note the difference between programming a discrete parameter with OFF and programming it with a 0. "OFF"
means "not connected"; 0 means "off state".
3.11 How to program function block parameters
The second type of programmable parameter is a function block parameter. A function block parameter's
data is contained within a function block and cannot be connected to another function block. When you are
programming a function block and are not given a choice of PARM, you are programming a function block
parameter. Typical choices when programming a function block parameter are NONE, OFF, any numerical
value, or a list of options—but not PARM.
Programming procedure
Here is the procedure for programming a function block parameter. It is an example using a specific
function block parameter, but the keystrokes used will apply when you are programming any function block
parameter.
Continuing with the example from Figure 3-12, assume we want Analog Output#1 to default to its lowest
value if the input source, LP2 OV, fails. Therefore, we must program Analog Output#1's failsafe parameter
with the appropriate selection. The following procedure shows how.
Table 3-9 Example Function Block Parameter Selection Procedure
Step
1
In the Program Analog Output menu, select ANALOG OUTPUT#1.
Consult the Program Analog Output section of this manual to learn about the menu item you wish to
2
change, namely, FAILSAFE.
3
Press the Down Arrow button to move the cursor down to FAILSAFE.
4
Press Enter to move the cursor to the right side of the display where the choices for FAILSAFE are.
5
Press Up Arrow or Down Arrow until DOWN is displayed.
6
Press Enter to select DOWN. The cursor moves to the left and DOWN is selected.
3.12 How to program a simple configuration
This section describes how to program your instrument. You should practice doing these procedures until
you are familiar with the buttons and menus.
Step
1
Select the desired function block from the Program menu.
2
Program each of the function block's input parameters with OFF, a number, or an output code from
another function block. See section 3.10 for this procedure.
3
Program each function block parameter with a number, selection, NONE, or OFF. See section 3.10
for this procedure.
12/00
Table 3-10 Function Block Configuration Procedure
VPR & VRX – User Manual
Programming and Operating Concepts
Action
Action
Continued
57
Advertisement
Table of Contents
