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3-66

Programming 15088:K 3/21/01

Due to the 14-byte size limitation, it may be necessary to use more than one equation or list to accomplish a

desired result. Through the use of reverse activating zones, an equation which normally would contain too

many bytes can be broken up into several smaller equations.

In the example below, a control module (CMX) is to be activated by any one of 14 software zones:

Z7 Z8

Z13

Z10

Z11

Z14Z1

Z12

L1M1

CMX

By using two reverse-activating zones, the equation with 16 bytes is broken into two smaller equations and

the CBE for the control module uses the two reverse-activating zones as its operands.

Z7 Z8

Z13

Z10

Z11

Z14Z1

Z12

Z239

RZON

Z240

RZON

L1M1

CMX

CBE Equation for L1M1:

OR( Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Z12 Z13 Z14 )

1 + 1 +1 +1 +1 +1 +1 + 1+1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 16 Bytes

(too many)

CBE Equation for Z239:

OR(Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8)

= 10 Bytes

CBE Equation for Z240:

OR(Z9 Z10 Z11 Z12 Z13 Z14)

= 8 Bytes

CBE Equation for L1M1:

OR(Z239 Z240) = 4 Bytes

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