Johnson Controls IFC-3030, Руководство по программированию

Страница: 128 / 156

128 IFC-3030 Programming Manual — P/N 52025:C 08/05/2005
CBE: Zones and Equations Equations
• If duration time of zero is entered (00.00.00), the equation will evaluate true when the delay
time expires if the argument remains active throughout the delay time period.
• If no duration or delay is specified, then the function will follow the input argument,
indicating true while it is active and false when it is inactive. DEL assumes a value of false
on reset.
The “SDEL” Function
A latched version of the DEL function.
Example: SDEL(HH.MM.SS, HH.MM.SS,L1M140)
• The first HH.MM.SS is the delay time, the second HH.MM.SS is the duration time. If the
argument (L1M140 in the example above) activates, the function becomes true after the
delay time, and will remain active for the duration even if the argument becomes inactive
during either the delay or duration time.
• If delay time of zero is entered (00.00.00), the equation will evaluate true as soon as the
argument (L1M140) activates and will remain that way for the specified duration, even if
the argument becomes inacative during that time.
• If no duration or delay time is specified, then the argument will not deactivate until reset,
even if the argument becomes inactive.
The “TIM” Operator
The TIM function is used to specify activation on specific days of the week or year.
Examples:
TIM(7-11-04) will evaluate as true for 24 hours starting at midnight (00:00:00) on July 11,
2004.
TIM(MO,TU,WE,TH,FR,08:00:00,23:00:00) will evaluate as true at 8:00 AM and remain true
until 11:00 PM (23:00) for the list of days supplied.
TIM(MO,TU,WE,TH,FR,08:00:00) will evaluate as true at 8:00 AM and remain true until
23:59:59 of the current day for the list of days supplied.
TIM(TU,07:45:00,18:30:00) will evaluate as true every Tuesday between 7:45 AM until 6:30
PM.
TIM(MO,TU,WE,TH,FR) will evaluate as true from Monday morning at 12:01 AM until
Friday evening at 11:59:00 PM.
Logic Equation Syntax Example
OR(AND(L1D1,L1D4),AND(L2D6,L2M3,NOT(L2M4)),ANY2(L1M13,L1M14,L1M15))
Equation begins with a logic function - OR
67 Characters (maximum of 80) - includes parentheses and commas.
5 Logic Functions (maximum of 10) - OR, AND, AND, NOT and ANY2.
8 Arguments (maximum of 20 per logic function) - L1D1,L1D4,L2D6,L2M3,L2M4....
The equation contains no spaces.
Evaluating an Equation
To evaluate an equation, start from the innermostpart of the equation and work outwards. For this
equation to evaluate TRUE and thus turn on any output mapped to it, the following conditions must
be met: