LIOB-595 I/O Controllers are IP-enabled, compact, programmable BACnet Building Controller (B-BC) with 6 Universal configurable inputs and outputs, 4 relays 2 A, RS-485 communication port with Modbus RTU / BACnet MST/P and integrated graphical visualization for Scada applications.

LIOB‑595 I/O Controllers are 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 Controllers further allow data exchange over global connections (network‑wide data exchange), offer AST™ functions (Alarming, Scheduling, and Trending), store custom graphic pages for visualization in LWEB‑802/ 803, and can be seamlessly integrated in the LWEB‑900 Building Management System. The L‑IOB I/ O Controllers implement the BACnet Building Controller (B‑BC) profile and are BTL certified.


  • Automation station with physical inputs and outputs
  • Programmable with L‑STUDIO IEC 61131‑3 and IEC 61499
  • Room controller for up to 2 room segments
  • 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
  • Alarming, Scheduling, and Trending (AST™)
  • Node.js support* for easy IoT integration (e.g. Google calendar, MQTT, Alexa & friends, multimedia equipment,…)
  • Event‑driven e‑mail and SMS (requires LTE‑800) notification
  • Supports BACnet MS/ TP and 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), 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 MS/ TP Router including BBMD and slave proxy
  • Math objects to execute mathematical operations on data points
  • Stores customized graphic pages 
  • Visualization of customized graphic 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
  • Gateway functions including Smart Auto‑Connect™ 
  • 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 LTE through LTE‑800 Interface 
  • Support of the L‑STAT Room Operator Panel 
  • Stores user‑defined project documentation 
  • Integration of damper actuator via MP‑Bus 
  • Differential pressure sensor 
  • Support VPN

*requires L-IOT1 software licenses

Ordering number: 
Supply input: 24Vac/24Vdc
Technology: Multiprotocol
Field bus: Multiprotocol
Input names: 
6 Univesal Input/Outputs, 1 Differential Pressure Sensor
Outputs names: 
4 Relays 2 A

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.

Unitary and Terminal Controller

The LIOB‑595 is designed to efficiently implement unitary and terminal applications in a compact form factor. The integrated differential pressure sensor, its local I/O, and the built‑in MP‑Bus port provide connectivity for all unitary and terminal equipment. In addition, the RS‑485 port allows connection of L‑STAT room operator panels for temperature and air quality measurement and user interaction.


IoT Integration:

The IoT function (Node.js) allows connecting the system to almost any cloud service, either for uploading historical data to analytics services, telemetry using MQTT, 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 control.


| | 0 | Datasheet | Product features document

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