Connections

MODBUS

+ Integrated Power Supply

Integrated Backup Battery Plus

MODBUS + Power

The RIO xR3 features a built-in MODBUS interface with integrated power supply. It outputs a maximum of 10W @ 24Vdc.

The MODBUS interface has a software selectable termination resistor and biasing.

The RIO xR3 can be programmed to automatically scan up to 8 MODBUS devices. Flexible parameter settings allow the automatic harvesting of embedded data and streaming the collected information via SNMP or MQTT.

MODBUS

With Internal Power Supply

An active power management unit constantly monitors the port’s voltage and current levels. It shuts down power delivery as soon as user defined thresholds are crossed.

The power supply can power a number of external sensors (as well as the optional satellite modem), provided the overall load does not exceed the 10W power budget.

I/Os

1 MODBUS Port

1 DC Output Port
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

The MODBUS can also be powered using external power sources by making the proper connections to the A/+ and B/- terminals.

I/Os

1 MODBUS Port
Connectors

1 x 4 position
Pluggable

Yes
Type

Screw Terminal
Pitch

3.5mm

MODBUS

With External Power Supply

Satellite Modem

via MODBUS/RS-485

Sending status notifications and alarms via satellite can be accomplished by hooking up the satellite modem to the MODBUS/RS-485 port of the RIO xR3.

Optima recommends installing a zener barrier or surge protector wherever the wiring leaves the shelter for added safety.

The examples depict how to power the satellite modem from the built-in power supply, or an external source.

Using the built-in source has the added advantage that the power output is backed up by the built-in standby battery.

This allows sending a ‘last gasp’ message before everything shuts down in case of prolonged power outages.

Satellite modem and MODBUS devices can be mixed and matched on the same bus.

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