Modbus/M-Bus LoRaWAN™ Technology Node
The MCCI Catena® 4801 RS-485 Node for LoRaWAN™ technology networks is a complete open-source single-board IoT device that can monitor and control remote Modbus, M-Bus and other industrial devices.
Based on the Murata CMWX1ZZABZ-078, the Catena 4801 is a great platform for RS-485/Modbus based LoRaWAN investigation and deployment. It works well with The Things Network, or any LoRaWAN 1.02 or 1.1 network in the 865 to 923 MHz range.
As a Modbus controller, the Catena 4801 can control a large number of Modbus devices and communicate results via the LoRaWAN network, limited only by system memory and polling rate. As a Modbus device, the Catena 4801 can bridge an existing Modbus controller to the LoRaWAN network.
Specifications and Features
Murata LoRaWAN module
- Semtech SX1276 LoRa radio
- STM32L082 CPU (Cortex M0+, 24 MHz, 192K flash, 20K RAM)
- High quality RF engineering
- Certified for US and EU
- Compatible with IN866, AS923, AU921 bands
- RS-485 transceiver for connecting to Modbus, M-bus, or other RS-485 networks.
- Laid out to accept screw terminals for to field wiring to the RS-485 network, and for connecting to additional external sensors or providing local control (pulse, analog or digital).
- Processor-controlled power switches for the RS-485 transceiver, the external sensors, FRAM and flash ICs, allowing very low standby current.
- 8K bytes FRAM for LoRaWAN provisioning info and frame counters — power can be removed completely without requiring a new join to the network, and without losing uplink and downlink count values (required for LoRaWAN 1.1)
- 1M byte SPI Flash for bulk data storage, future FoTA firmware storage, etc.
- Switchable boost converter for powering from disposable batteries (such as 2x AAA cells) — input range 1.8V to 3.3V. Processor can disable boost converter when regulated 3.3V is not required, for additional power savings. (Note: in contrast to the Catena 4450 and Catena 4610, there is no charger in this model.)
- Standby current < 10 uA.
- SWD for download and debug
- UART port for provisioning and logging.
- Designed for use with The Things Network (open-source, user-owned IoT network based on LoRaWAN); but can be used with any LoRaWAN-compatible network
- Whip, u.FL, or SMA antenna
- Battery termination: rising cage screw terminals, 20 to 30 AWG.
- Size: 0.9″ x 2.0″.
- Open source hardware and software
- Hardware is configured to support the Sigfox FSK stacks (however, Sigfox support has not been tested).
MCCI provides a full Arduino board-support package
MCCI also provides libraries to allow rapid prototyping and experimenting, including an open-source LoRaWAN stack that supports the EU868, US915, AS923, AU921 and IN866 regional plans.
ST Micro tools may also be used.
Volume discounts and custom variants are available.
RS-485, Modbus, M-Bus
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