Industrial Protocols

The set of Industrial Protocol modules for Waspmote allows the user to interface with different industrial buses:


Waspmote allows to perform three main applications:

1º- Connect any sensor to an existing industrial bus

Waspmote can be configured to work as a node in the network, inserting sensor data into the industrial bus already present. Waspmote can obtain information from more than 70 sensors currently integrated in the platform by using specific sensor boards (e.g: CO, CO2, temperature, humidity, acceleration, pH, IR, luminosity, vibration, etc). This way, the sensor information can be read from any industrial device connected to the bus.


2º- Add wireless connectivity to wired buses

Waspmote can be configured to read the information from the bus and send it to the Libelium IoT Gateway using any of the wireless radio modules available: 802.15.4, 868 MHz, 900 MHz, WiFi, 4G, Sigfox and LoRaWAN.


3º- Connect to the Cloud industrial devices

Waspmote can be configured to read the information coming from the bus and send it via wireless directly to the Cloud using WiFi, GPRS, GPRS+GPS, 3G or 4G radio interfaces.


» RS-485

  • Standard: EIA RS-485
  • Physical media: Twisted pair
  • Connector: DB9
  • Network topology: Point-to-point, Multi-dropped, Multi-point
  • Maximum devices: 32 drivers or receivers
  • Mode of operation: Differential signaling
  • Maximum speed: 460800 bps
  • Voltage levels: -7 V to +12 V
  • Mark(1): Positive voltages (B-A > +200 mV)
  • Space(0): Negative voltages (B-A < -200 mV)
  • Available signals: Tx+/Rx+, Tx-/Rx-(Half Duplex)Tx+,Tx-,Rx+,Rx-(Full Duplex)
  • Industrial equipment
  • Machine to Machine (M2M) communications
  • Industrial Control Systems, including the most common versions of Modbus and Profibus
  • Programmable logic controllers
  • RS485 is also used in building automation
  • Interconnect security control panels and devices

» CAN Bus

  • Standard: ISO 11898
  • Cabling: Twisted Pair
  • Connector: DB9
  • Network topology: Multimaster
  • Speed: 125 to 1000 Kbps
  • Signaling: Differential
  • Voltage levels: 0-5V
  • Signals: Half Duplex
  • Automotive applications
  • Home automation
  • Industrial networking
  • Factory automation
  • Marine electronics
  • Medical equipment
  • Military uses

» Modbus


The Modbus is a software library that can be operated physically on the RS-485 module.

  • Data area: Up to 255 bytes per job
  • Interface: Layer 7 of the ISO-OSI reference model
  • Connector: DB9 (RS-485 module)
  • Number of possible connections: up to 32 in multi point systems
  • Frame format: RTU
  • Multiple master-slave applications
  • Sensors and instruments
  • Industrial networking
  • Building and infrastructure
  • Transportation and energy applications

» 4-20 mA (Current Loop)

  • Type:  Analog
  • Media: Twisted Pair
  • No. of devices: 1
  • Distance: 900m
  • Supply: 5-24V
  • Sensors and instruments
  • Remote transducers
  • Monitoring processes
  • Data transmission in industrial scenarios