Honeywell VRX180 Logic Operators, For this operator Definition If this is true Then Result is

Programming Function Blocks and Features

Table 4-26 Logic Operators

For this operator	Definition		if this is true		then Result is
AND	If all programmed inputs are ON,		All programmed inputs are		ON(1)
	Result is ON.		ON(1)
OR	If at least 1 programmed input is ON,		At least 1 programmed		ON(1)
	Result is ON.		input is ON(1)
XOR	Uses Inputs A and B only.	Input A is ON(1) and Input			ON(1)
			B is OFF(0).
	If one and only one input is ON, Result		Input A is OFF(0) and Input		ON(1)
	is ON.		B is ON (1).
RESET/SET FF	Rising edge of Input A turns Result		Input A is ON(1).	ON(1)
	ON.
(Reset/Set Flip-Flop)	Rising edge of Input B resets Result.	Input A is OFF(0) and Input			OFF(0)
			B is ON (1).

Reset/Set FF

Input A

Input B

Result

TOGGLE/FF

Toggle Flip-Flop. Rising edge of Input A inverts Result

Input A changes from	ON(1) if it was
OFF(0) to ON(1) (rising	OFF(0), or OFF(0)
edge)	if it was ON(1).
Input A changes from	unchanged
ON(1) to OFF(0) (falling
edge)

Toggle/Flip-Flop

Input A

Result

ONE SHOT	Rising edge of Input A turns Result	Input A is ON(1) for any	ON(1) for 1 scan
	ON for one machine scan cycle.	length of time	cycle of the
			instrument, then
			OFF(0)

One Shot

Input A

Result

PASS

Passes Input A’s state unchanged to

CONDITION TYPE.

Input A changes state

same as Input A

118 Video Recorder – User Manual