Appendix D: CBE (Control-By-Event) Equation Entry
98
NFS-640 Programming Manual P/N 51333:B 10/03/2003
Argument Entries
The argument entries of the logic functions can be another logic function or any of the devices listed
below:
Equations must be evaluated before use in another equation.
Time Delay Functions
The “DEL” Operator
Used for delayed operation
Example: DEL(HH:MM:SS HH:MM:SS,ZE5)
• The first HH:MM:SS is the delay time, the second HH:MM:SS is the duration time.
• If delay of zero is entered (00.00.00), the equation will evaluate true as soon as the internal
equation (ZE5) evaluates true and will remain that way for the specified duration, unless the
internal equation becomes false.
• If no duration is specified, then the device will not be deactivated until a reset occurs or the
internal equation evaluates false.
The “SDEL” Operator
A latched version of the DEL operator. Once the equation evaluates true, it remains activated until a
reset, even if the internal equation (ZE5) becomes false.
Example: SDEL(HH:MM:SS HH:MM:SS,ZE5)
• The first HH:MM:SS is the delay time, the second HH:MM:SS is the duration time.
• If delay of zero is entered (00.00.00), the equation will evaluate true as soon as the internal
equation (ZE5) evaluates true and will remain that way for the specified duration.
• If no duration is specified, then the device will not deactivate until reset.
The installer can enter the equations in any combination wanted as long as the format of the logic
function or time delay is followed from the lists above. Error checking will be performed after the user
has entered the complete equation. Possible errors are too many or too few parentheses, too many or too
few arguments inside the parentheses, unknown function and unknown device type.
1D1 – 1D159 detectors loop 1 (159)
1M1 – 1M159 modules loop 1 (159)
2D1 – 2D159 detectors loop 2 (159)
2M1 – 2M159 modules loop 2 (159)
P1-P64 S5000 Modules (64)
B1 – B4 panel bells (4)
Z0 – Z99 zones (100)
F0 – F9 special function zones (10)
R0 – R9 releasing zones (10)
ZE0 – ZE9* equations 0-9 (10)
ZL0 – ZL9** equations 10-19 (10)
*Corresponds in VeriFire™ Tools to ZL1-ZL10
**Corresponds in VeriFire™ Tools to ZL11-ZL20
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