Honeywell HC900 Reference Manual page 89

4AND Function Block
Description
The 4AND label stands for the AND Boolean function (4 Inputs).
This block is part of the Logic and Fast Logic categories.
Function
Turns digital output (OUT) ON when inputs X1 through X4 are ON . Thus,
If all inputs are ON, then: OUT = ON.
•
If any input is OFF, then: OUT = OFF.
•
Input
X1 = First digital signal
X2 = Second digital signal
X3 = Third digital signal
X4 = Fourth digital signal
ATTENTION
Unused values must be set to 1 or inverted.
Output
OUT = Digital signal controlled by status of input signals
Revision 11
2/07
HC900 Hybrid Control Designer Function Block Reference Guide
Function Blocks
4AND Function Block
75