BL121 Series · 2 or 6 serial ports · Downlink: Modbus RTU Master, Modbus TCP Master · Uplink: OPC UA
Choose BL121 for small to medium OPC UA integration projects, or BL121P for large‑scale industrial data collection. Both support optional WiFi.
| Feature | BL121 (Standard) | BL121P (High‑Performance) |
|---|---|---|
| Serial Channels | 2 × RS485/RS232 | 6 × RS485/RS232 |
| Max. Modbus Devices | 10 | 50 |
| Data Points | 512 | 4,000 |
| Downlink Protocols | Modbus RTU Master · Modbus TCP Master | Modbus RTU Master · Modbus TCP Master |
| Uplink Protocol | OPC UA | OPC UA |
| WiFi (Optional) | ✓ 802.11a/b/g/n | ✓ 802.11a/b/g/n |
| Dimensions (L×W×H) | 30 × 83 × 110 mm | 40 × 83 × 110 mm |
| Weight | 133 g | 171 g |
| Best Fit | Small / Medium OPC UA Integration | Large‑Scale Industrial Data Collection |
Engineered for industrial data integration with seamless Modbus to OPC UA conversion and platform‑standardized data access.
Collects data from Modbus RTU and Modbus TCP devices — outputs to OPC UA for standardized industrial data access.
OPC UA provides secure, platform‑independent, and standardized data access — seamless integration with SCADA, MES, and IIoT platforms.
Bridge legacy Modbus devices to modern OPC UA systems — enabling Industry 4.0 and digital transformation initiatives.
Optional WiFi for flexible network deployment — ideal for locations where wired Ethernet is unavailable or impractical.
9–36V DC wide input, reverse‑polarity protection, -40~85°C operation, EMC Level 3 (ESD/EFT/Surge), 2KV isolation.
DIN35 rail or wall mounting with patented rail‑clip — quick installation in electrical panels, mechanical rooms, and equipment enclosures.
Click a tab below for detailed module parameters. Both models share the same core platform.
Designed for system integrators, industrial automation engineers, and IT/OT convergence projects.
Bridge Modbus field devices to OPC UA SCADA and MES systems — enable real‑time production monitoring and data analytics.
Connect legacy Modbus equipment to OPC UA‑based IIoT platforms — unlock data for predictive maintenance and digital twins.
Provide standardized OPC UA data access from factory floor devices to enterprise IT systems — enabling business‑level decision making.
Deploy OPC UA servers at remote sites via WiFi — centralize industrial data from distributed locations into a single OPC UA client.
