Pacific Research Solutions PET-820 User Manual
Page 38
Pacific Research
PET-820 User Manual
Page 37
4.6.3
SET ANALOG INPUT INTEGRATE RATE
The integrate rate is used to filter each of the analog inputs so that a momentary large change in analog voltage will be
averaged with prior readings. A large integrate rate can be used to eliminate some noise and interference. Each analog input
can be programmed to a different rate of 1 through 8. This number is the number of prior readings of the ADC that are
averaged together. The output value of the integrate routine is then used by the minimum and maximum value register and
the analog alarm functions.
COMMAND CODE:
72
PROGRAM SYNTAX:
72 [Input] [Data] #
READ BACK SYNTAX:
72 [Input] #
WHERE:
Input = 1 though 8
Data = 1 through 8
EXAMPLE:
72 1 4 # = Analog channel number 1 will integrate the last four readings
DEFAULT:
All inputs = 4
4.6.4
ENABLE ANALOG INPUT FOR ALARM OUTPUT
With this command you can define which of the analog inputs will be used by the alarm function. This command can also be
effective in disabling an input that is currently generating an alarm, allowing you to reestablish the arm mode without that
input generating a new alarm.
COMMAND CODE:
73
PROGRAM SYNTAX:
73 [Input] [Data] #
READ BACK SYNTAX:
73 [Input] #
WHERE:
Input = 1 through 8
Data = Zero (0) or Non Zero (1-9), Zero = disable input for alarm output
EXAMPLE:
73 1 1 # = Enable input number 1 for alarm output
73 2 0 # = Disable input number 2 for alarm output
DEFAULT:
All inputs = 0
4.6.5
ENABLE ANALOG INPUT FOR ALARM RELAY OUTPUT
Each of the analog inputs can be configured in a manner to energize the alarm relay, once the alarm has been detected. This
feature may be used to operate a siren or flashing lamp to identify the alarm condition. Note that the alarm relay is also
shared with the monitoring and relay output control function. Anyone of these other functions can also effect the operation of
the relay.
COMMAND CODE:
74
PROGRAM SYNTAX:
74 [Input] [Data] #
READ BACK SYNTAX:
74 [Input] #
WHERE:
Input = 1 through 8
Data = Zero (0) or Non Zero (1-9), Zero = disable input for alarm relay output
EXAMPLE:
74 1 1 # = Enable input number 1 for alarm relay output
74 2 0 # = Disable input number 2 for alarm relay output
DEFAULT:
All inputs = 0