Honeywell VRX180 user manual Free Form Logic Prompts, Neg

Programming Function Blocks and Features

Free Form Logic

Lets you enter up to 64 characters as a custom logic equation (EQ) containing inputs and logical operators. The result of this equation is called “Result”. Result is then processed according to the specified condition type and condition time. The final output is CVn OS. See Figure 4-6.

Inputs
A
B			CONDITION
C
	FREE FORM		TYPE
D		Result		CVn OS
	LOGIC		&
E
	EQUATION		CONDITION
F			TIME
G
H

Figure 4-6 Free Form Logic Signal Flow

Table 4-27 describes the Free Form Logic prompts. See Table 4-2 for additional prompts.

Table 4-27 Free Form Logic Prompts

Prompt		Range/Selections		Definition
EQ	*			Symbol for AND operator
	+			Symbol for OR operator
	^			Symbol for XOR operator
		NEG		Symbol for NOT operator
		A, B, C, D, E, F, G, H		Symbols for Input A through Input H
		O		Letter O is the symbol for output CVn OS from the previous
				logic calculation. Use for iterative calculations.
	1			One = ON
	0		Zero = OFF
	( )			Expressions enclosed by parentheses are evaluated first.
INPUT A - INPUT H	OFF, discrete parameter, 0,			Up to 8 input sources.
	1.
RESET		OFF, discrete parameter, 0,		Resets the output to OFF (0). Use when using the letter O
	1			in equations.
CONDITION TYPE		NONE, DELAY, EXTEND,		See Table 4-20 on page 111.
		PULSE, RT PULSE
CONDITION TIME		OFF or number		Enter number of seconds of condition time. See Table 4-20
				on page 111.

Video Recorder – User Manual 119