Murphy M2, Руководство по установке

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Section 50 00-02-0674
04-16-10 - 21 -
General Operation: Discrete Remote
– ONE CHANNEL
The sensor polarity for a single channel discrete remote can be configured for a Normally
Open (NO) or Normally Closed (NC) sensor contact.
A Discrete Remote is a very low power device that utilizes sleep functionality to extend battery
life. The Remote remains in a sleep state until one of the following conditions occur:
A heartbeat needs to be sent to the Gateway.
The switch that the Remote is connected to changes state.
Heartbeat:
The Remote is programmed to send a heartbeat to the Gateway on a periodic basis
which allows the Gateway to detect if a Remote goes offline due to RF communication
issues or some other failure condition.
Switch State Change:
When the sensor changes state, the remote detects this change and immediately sends
a special message to the Gateway alerting it that an event occurred. It then waits to
receive an acknowledge (ACK) from the Gateway. If an ACK is not received within a
specified time period, a series of steps are taken to insure the Gateway receives notice
that a sensor event occurred. This continues until the Remote receives an ACK from
the Gateway.
After receiving an ACK from the Gateway, the remote will return to normal heartbeat
operation. If the switch is still in a tripped state, this event condition will be reported
during the next heartbeat transmission. This allows the operator to know that a sensor
needs to be manually reset or some other event condition is still active.
After the switch returns to a normal state, the Remote returns to normal operation.