The LIOB‑586/588/589 I/O Controllers are IP-enabled, compact, programmable automation stations for LonMark Systems and BACnet/ IP networks with physical inputs and outputs and integrated graphical visualization.

The LIOB‑589 I/O Controller is equipped with two Ethernet ports including a built-in Ethernet switch. This allows for building a daisy chained line topology of up to 20 devices, which reduces costs for network installation. Dual Ethernet port devices also allow the setup of a redundant Ethernet installation (ring topology), which increases reliability. The redundant Ethernet topology is enabled by the Rapid Spanning Tree Protocol (RSTP), which is supported by most managed switches.

Technology data points are automatically exposed as OPC tags for higher level OPC client applications or L‑WEB system via the integrated OPC server providing SSL encrypted web services (OPC XML‑DA) or UA Secure Conversation (OPC UA). The L‑IOB I/O Controller further allows data exchange over global connections (network-wide data exchange), offers AST™ functions (Alarming, Scheduling, and Trending), stores custom graphic pages for visualization in LWEB‑802/ 803, and can be seamlessly integrated in the LWEB‑900 Building Management System. LIOB‑589 I/O Controller implement the BACnet Building Controller (B-BC) profile and are BTL certified.

General features

  • Dimensions (mm): 159 x 100 x 75 (L x W x H). 
  • L-IOB I/O Controller: 10 UI, 6 AO, 6 DI, 4 DO (4x Relay 8 A).
  • Automation station with physical inputs and outputs.
  • Programmable with L‑STUDIO IEC 61131‑3 and IEC 61499.
  • Programmable with L‑LOGICAD.
  • Extension with physical inputs and outputs using one L‑IOB I/O Module (LIOB‑11x or LIOB‑45x/55x).
  • 128x64 graphic display with backlight.
  • Local and remote access to information about device status and data points.
  • Manual operation using the jog dial or VNC client.
  • Manual override of each output through switches (LIOB-586 only).
  • Alarming, Scheduling, and Trending (AST™).
  • Node.js support* for easy IoT integration (e.g. Google calendar, Alexa & friends, multimedia equipment,…).
  • Event-driven e-mail notification.
  • Math objects to execute mathematical operations on data points.
  • Stores customized graphical pages.
  • Visualization of customized graphical pages through LWEB‑900 (Building Management), LWEB‑803 (Monitoring and Control), or LWEB‑802 (Web Browser).
  • Support of the L‑STAT Room Operator Panel.
  • Built-in OPC XML‑DA and OPC UA server.
  • Dual Ethernet/IP interface.
  • Access to network statistics.
  • Compliant with ANSI/‌ASHRAE 135‑2012 and ISO 16484‑5:2012 standard.
  • Supports BACnet MS/‌TP or BACnet/‌IP.
  • BACnet Client Function (Write Property, Read Property, COV Subscription).
  • BACnet Client Configuration with configuration tool (scan and EDE import).
  • B-BC (BACnet Building Controller) functionality, BTL certified.
  • Compliant with CEA‑709, CEA‑852, and ISO/‌IEC 14908 Standard (LonMark System).
  • Supports IP‑852 (Ethernet/‌IP).
  • Support of dynamically created or static NVs.
  • Support of user-defined NVs (UNVTs) and Configuration Properties (SCPTs, UCPTs).
  • Integrated BACnet/‌IP to BACnet MS/‌TP Router including BBMD as well as Slave-Proxy functionality.
  • M‑Bus Master according to EN 13757‑3, connection via optional M‑Bus Converter (L‑MBUS20 or L‑MBUS80).
  • Gateway functions including Smart Auto-Connect™.
  • Modbus TCP and Modbus RTU (Master or Slave).
  • Integrated web server for device configuration and monitoring data points.
  • Connection to EnOcean wireless devices via LENO‑80x Interface.
  • Supports WLAN through LWLAN‑800 Interface.
  • Supports MP-Bus through LMPBUS-804 Interface.
  • Supports LTE through LTE‑800 Interface.
  • Stores user-defined project documentation.

*requires L-IOT1 software license

Local Operation and Override: All L‑IOB I/O Controllers are equipped with an LCD display (128x64) with backlight and jog dial for manual local operation and override. Device and data point information is displayed in text form and via graphical symbols. On the LIOB‑589 front panel the six relay outputs can be overridden via 3-way switches.

Power Measurement: External meters can be integrated via M‑Bus or Modbus. The LIOB‑589 I/O Controller perfectly meet energy management and energy reporting applications.



Ordering number: 
Supply input: 24Vdc
Field bus: Multiprotocol
Input names: 
10 Universal Input, 6 Digital Input
Outputs names: 
6 Analog Output, 4 Digital Output, 4 x Relay 8 A


IoT Integration

The IoT function (Node.js) allows connecting the system to almost any cloud service, either for uploading historical data to analytics services, delivering alarm messages to alarm processing services or operating parts of the control system over a cloud service (e.g., scheduling based on Web calendars or booking systems). Processing Internet information such as weather data in forecast-based control is also possible. Finally, the JavaScript kernel also allows implementing serial protocols to non-standard equipment in primary plant contro




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