Owner`s manual

M SERIES DAC
BASE UNIT AND MODULE OPERATION
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157
1:15:2 7FA 11/18/93 09:12:22
1:15:3 8C3 11/18/93 09:12:22
1:15:4 CD4 11/18/93 09:12:22
1:15:5 568 11/18/93 09:12:22
1:15:6 04E 11/18/93 09:12:22
1:15:7 CBA 11/18/93 09:12:22
1:15:8 7D2 11/18/93 09:12:22
UNIT
MODULE
RELAY #
RELAY STATUS
DATE
TIME
Data messages requested through the use of Data Commands might include the
messages from one or more channels.
V79 AND V80 OPERATION
GENERAL
The V79 PDI-1 and V80 V80 PDI-2 modules are used in applications requiring
notification of device status (e.g., burglar and fire alarms, event counters/timers,
process control, etc.). The V79 PDI-1 module has 16 channel switch inputs providing
a reliable method to detect and report a state change from high resistance (open) to
continuity (closed) or vice versa. The V80 V80 PDI-2 is a 16 channel optically-
isolated voltage input module that is non-polarity sensitive and can be individually set
to detect the presence or the change of state of AC or DC inputs. We will refer to a
change in state of a switch closure (V79 PDI-1) or a voltage change (V80 V80 PDI-2)
as an event. An event sample is the actual data associated with an event which is
calculated by the PDI module and sent to the host computer/controller.
Individual PDI channels can be programmed to report event samples upon request via
data commands (Command Reporting Method), at a specific date/time (Schedule
Reporting Method), or as the event occurs (Immediate Reporting Method). Multiple
events may be stored for later retrieval and analysis. The PDI features a latch mode
where the time and state of the initial event is latched and held until user reset. False
reporting of events is prevented by programming variable debounce times. Event
samples are preceded by the appropriate unit, module, and channel number and may
be appended with a "real time" Time Tag showing the date and time the status was
recorded.