AM2020/AFP1010 Troubleshooting Guide 50432 Revision A 8/13/97
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This means that if Zone 100 is active then Zone 208 is inactive. If Zone 100 is inactive
then Zone 208 is active. The logic gate equivalent of this equation would look like Figure
3-8.
Figure 3-8: Logic gate equivalent of a NOT equation.
The above equation can also be visualized in electrical terms as a normally closed switch.
Zone 100
Zone 208
Figure 3-9: Electrical equivalent of a NOT equation.
The "XZONE" function is an operator that may be used in the Control-By-Event
equation of an output type device (CMX, XPC, or XPR modules) or of a reverse-
activated zone. The "XZONE" function is not really a cross-zone, but more of a
counting zone. When two or more initiating devices that are mapped to the
operand zone activate, then the equation will prove true.
Equation Format:
XZONE(Zn)
Example 1: Assume that Zone 220 is a reverse activated zone with the following Control-
By-Event equation:
XZONE(Z48)
This means that when any two or more initiating devices (detectors, monitor modules, pull
stations, and XPM points) that are mapped to Zone 48 go into alarm, then Zone 220 will
activate.
The operand in an "XZONE" equation (Zone 48 in Example 1) can be either a
forward or a reverse activated zone.
Example 2: Assume the following:
L1D1 is an addressable detector with the following CBE: (Z90)
L1D2 is an addressable detector with the following CBE: (Z90)
Zn is a FZON or an RZON that has at least
two initiating devices mapped to it.
L1D99 is an addressable detector with the following CBE: (Z90)
L1M1 is an addressable pull station with the following CBE: (Z90)
Zone 220 is a reverse activated zone with the following CBE:
XZONE(Z90)
This means that when any two or more of the initiating devices (L1D1, L1D2, L1D99, and
L1M1) go into alarm, then Zone 220 will activate.
How Does the "XZONE"
Function Work?
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