
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048 Page D-39
The One-shot Daily Timed Event Process is similar to the Timed Event Process
367
, except that it is
designed to operate only once every 24 hours
Data output #1 will be set to one when the current time is past the start of the first event, as defined in
Line Item #4, and will remain so for as long as specified by Line Item #5. Otherwise, the date output is
set to zero. The on-event only occurs only once in a 24-hour period as defined by the ZENO
®
-3200's
internal clock.
If the digital output channel, Line Item #6, is set to a value between 18 and 23, then the specified digital
output channel will be set high when the output of the process is high. Otherwise, it will be set low.
3.15. Static Alarm Process
Inputs: 4 Data
5 Threshold
6 Timeout for Threshold
7 BIT Flag Number (1 - 31)
Outputs: 1 Immediate Alarm State (0 = off, 1 = on)
2 Interval Alarm State (0 = off, 1 = on)
3 Baseline Value
4 Seconds Remaining Before Timeout
E1 Process error code
The Static Alarm Process monitors the data referenced by Line Item #4. It verifies that the data is
changing by an amount greater than the threshold defined by Line Item #5 and within the time period as
defined by Line Item #6. The alarm is set to one if the data input value does not change by an amount
greater than the specified threshold and within the given time period.
This process operates similarly to the Data Time-out Process
368
, but it provides extra information with
data outputs #2, #3 and #4.
4. SPECIAL SENSOR PROCESSES CATEGORY
4.1. NTC Thermistor Process
Inputs: 4 Any sensor or process value (read below)
5 A-coefficient for Steinhart-Hart equation
6 B-coefficient for Steinhart-Hart equation
7 C-coefficient for Steinhart-Hart equation
8 Resistance value for R2
9 Upper Limit
10 Lower Limit
11 BIT flag number (1 - 31)
Outputs: 1 The average temperature value
2 The most recent temperature value
367
Refer to Category #3, Process #13.
368
Refer to Category #3, Process #4.
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