Bring Modbus devices, meters and controllers into BACnet-based BMS and BAS platforms
The LM BACnet Gateway bridges Modbus devices into BACnet networks through protocol conversion and data mapping, enabling interoperability across multi-vendor building automation equipment.
Device interconnectivity for Modbus to BACnet integration.
Beyond protocol conversion, successful projects depend on predictable engineering workflow, stable point exposure and practical deployment characteristics.
Configure Modbus RTU/TCP collection and map field registers into BACnet-ready data structures with a point-oriented workflow.
Use the embedded web interface to observe live point values, communication status and gateway behavior during startup and daily operation.
Set up essential BACnet communication parameters so the gateway can be integrated cleanly into BACnet IP or BACnet MS/TP environments.
A core diagnostic tool providing comprehensive logs of runtime status, communication interactions and errors to pinpoint root causes.
The same product pattern works well anywhere field data must be presented to a BACnet-centered supervisory environment.
Expose chiller, boiler, pump, VFD and auxiliary controller data to a unified BACnet head-end for operational supervision.
Bring electrical and utility metering data into BACnet-based energy dashboards, tenant systems and facility reporting platforms.
Keep existing Modbus-side equipment while giving the new BMS a cleaner BACnet-facing integration layer.
From submittal review to site startup, the goal is to keep the BACnet delivery path understandable for controls teams and project owners.
Identify the field devices, required points and expected BACnet-side object organization.
Select the gateway that best fits panel constraints and expected project density.
Use model datasheets and the BACnet function manual to support project design and implementation.
Verify point visibility, naming consistency and BACnet-side system acceptance on site.
Compare and select the right BACnet gateway model based on project point count, serial port needs, and network interface requirements.
| Model | LM Gateway101-BS | LM Gateway201-BS | LM Gateway402-BS |
|---|---|---|---|
| Connectivity | Wired | Wired | Wired |
| Serial Ports | 1 fully isolated RS485 (RS232 multiplexed) port | 2 fully isolated RS485 ports | 4 fully isolated RS485 ports |
| Ethernet Ports | 1 x 100M/10M Ethernet port | 1 x 100M/10M Ethernet port | 2 x 100M/10M Ethernet ports |
| Mounting | Wall-mount & DIN rail rear/side mounting | Wall-mount & DIN rail rear/side mounting | Wall-mount & DIN rail rear/side mounting |
| Data Points | 256 | 512 | 1024 |
| Documentation | Download Datasheet | Download Datasheet | Download Datasheet |