USER MANUAL – RTU-LP-ST
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The picture shows the DO1 and DO2 in Reset State (default).
2.6.
Power control for external sensors
The RTU can switch on up to 2 sensors before read a value from the analog inputs.
It’s possible to define a delay between power ON of an external sensor and the analog acquisition (for the
external sensor wake-up time).
Seneca recommends to use an external battery (rechargeable) for power up external sensors, the power is
connected to the sensor 1 through the DO1 and to the sensor2 through DO2. There is no need to command
the DO because the firmware can power up autonomously the sensors before reading.
2.7.
Digital inputs connections
The digital inputs can be connected like below:
