Rev 1.15
SignalFire Telemetry
18
Example
Line 1 has been configured with a source data node as a Sentinel-Analog with the
loop current (in μA) as the selected register. The relay will energize when the loop
current is above 1400μA (14mA) and de-energize when the loop current is below
1300μA (13mA). Note that this configuration has a 1000μA (1mA) hysteresis factor.
In this example all 4 source nodes are assigned to the same destination Modbus ID and relay channel
so the following statement applies:
If more than one rule is assigned to the same destination RSD Stick (or gateway
output) and relay channel, then all the rules must meet the energize condition for the
remote relay to be energized. In other words, the RSD table logic is a Boolean AND.
Alternatively, this means that if any one of the four source node’s logic results in the
“de-energize” condition being true the relay will be de-energized (safe).
RSD Event log
The RSD events will be stored in the gateway internal event log which can be read using the ToolKit.
Additionally, a basic RSD event log containing the last 5 RSD events is available to be read via
Modbus from registers 7000-7024. See the Modbus register map for details. The Modbus event log
it not maintained through gateway resets.
