Honeywell VRX180 How to program function block parameters, How to program a simple configuration

Programming and Operating Concepts

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”.

3.12 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 3-8, 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 3-8 Example Function Block Parameter Selection Procedure
Step		Action
1	In the Program Analog Output menu, select ANALOG OUTPUT#1.
2		Consult the Program Analog Output section of this manual to learn about the menu item you wish to
		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.

3.13 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.

	Table 3-9 Function Block Configuration Procedure
Step	Action

1Select the desired function block from the Program menu.

2Program each of the function block’s input parameters with OFF, a number, or an output code from another function block. See section 3.11 for this procedure.

3Program each function block parameter with a number, selection, NONE, or OFF. See section 3.11 for this procedure.

Continued

58 Video Recorder – User Manual