Native Modbus TCP EdgeIO controller with expandable I/O (1-3 Y Series slots). Built‑in RS485 gateway converts Modbus RTU to Modbus TCP. Web‑configurable local logic — handle simple tasks without PLC programming. Dual Ethernet with switch, -40°C to +85°C operation.
One device replaces the cumbersome combination of "PLC + I/O modules + gateway". Remote programmable, data acquisition, logic control – designed for industrial IoT and automation.
The BL190 is an industrial‑grade Modbus TCP EdgeIO controller from BLIIOT, integrating remote programmability, data acquisition, and logic control. Designed for industrial IoT and automation sites, it supports 1–3 Y‑series expansion slots, allowing users to freely combine digital, analog, temperature, serial, and pulse modules to adapt to diverse industrial scenarios.
One BL190 replaces the traditional "PLC + I/O modules + gateway" stack – simplifying architecture and reducing cost.
Modbus TCP (master/slave), Modbus RTU (master/slave), HTTP, DHCP, DNS
Modbus TCP Capacity
Up to 15 concurrent TCP connections
Operating Environment
-40°C ~ +85°C, 5%~95% RH
Mounting / Protection
Wall mount / DIN35 rail, IP30
Dimensions (1-slot/3-slot)
30×83×110 mm / 40×83×110 mm
Net Weight
133g (1‑slot) / 171g (3‑slot)
Use Case: Packaging Line – SCADA Integration
Background: A food packaging factory had an automated filling line with 8 machines (filler, sealer, labeler, case packer, etc.). Each machine had its own PLC and discrete I/O. Production data (counts, faults, machine status) could not be monitored centrally. The factory had a SCADA system (Modbus TCP), but field device interfaces were non‑uniform, requiring manual patrols.
Pain points: Dispersed machines running independently; discrete I/O cannot talk directly to SCADA; adding a central PLC would be costly; no remote visibility of production or faults – managers relied on paper reports.
✅ Retrofit with BL190
Deploy BL190 as an edge node at each machine, replacing legacy I/O modules and uploading data to SCADA.
Hardware configuration (example: filler):
Y11 (8DI): run/standby/fault dry contacts, safety door status, material presence sensor
Low liquid level → open inlet valve (DO) + report to SCADA
Safety door open → immediately stop filler (DO) + log fault cause
Daily production pulse accumulation, auto‑reset at 00:00, store previous day’s count in holding register for SCADA
Modbus TCP to SCADA:
DI addresses 2000‑2007 → machine status
DO addresses 1000‑1007 → control commands
AI addresses 3000‑3003 → analog values
Holding registers 40000‑40009 → production counters, setpoints
Each BL190 acts as a Modbus TCP slave; SCADA polls via Ethernet
Dual Ethernet daisy chain: Connect 8 BL190 units in daisy chain (ETH0 to previous, ETH1 to next) – a single cable trunk to the switch, saving cabling cost.
Remote O&M: Engineers use BLRAT remote tool to modify alarm thresholds (e.g., liquid level limits), reset production registers, and check I/O status – no need to enter the production floor.
📉 Before Retrofit
▪ Data collection: manual patrol, paper logs
▪ SCADA integration: not possible
▪ Maintenance: on‑site only
▪ Wiring: point‑to‑point, high cost
📈 After Retrofit
▪ Real‑time SCADA monitoring
▪ Native Modbus TCP slave
▪ Remote diagnostics & tuning
▪ Daisy‑chain cabling saves 50%+ wiring
Key takeaway: BL190 turns isolated legacy I/O nodes into standard Modbus TCP devices, seamlessly integrating with SCADA. Its daisy‑chain Ethernet, built‑in logic, and remote O&M make digital transformation of small to medium lines simple, economical, and replicable.
Wide Range of Modbus TCP Applications
🏭 Smart Manufacturing As remote I/O for PLC, or standalone conveyor control, presence detection, fault alarms – direct Modbus TCP to SCADA.
🏢 Smart Building Connect lighting, HVAC, access control, fans – Modbus TCP directly to BAS.
🌱 Agriculture & Environmental Monitoring Temperature, humidity, CO₂, control fans, water valves, film motors – local threshold alarms + cloud upload via gateway.
🔋 Energy Management Battery monitoring in energy storage cabinets, substation data collection – supports offline buffering and remote O&M.
🚇 Rail Transit Station equipment monitoring, edge nodes for IoT systems.
💨 Wind Power Turbine status, wind speed, temperature – Modbus TCP to central SCADA.
✔ Custom R&D and manufacturing (OEM/ODM) ✔ Long‑term after‑sales support
Y‑Series I/O Selector
Compatible with BL192Pro, BL192, BL191, BL190, BL193, BA190, BA190Pro — 3 expansion slots. 🖱️ Click same module multiple times = select multiple slots (e.g., 3× Y31).
Available I/O Modules
💡 Click behavior: Each click adds that module to the next available slot. 🔁 Duplicate allowed: Click same module 2 or 3 times to fill multiple slots (e.g. Y31 + Y31). ⚠️ Y61 (Serial) can be selected only once per controller.
Your Selection (Slots 1–3)
Total modules:0 / 3
Configuration summary
No modules selected. Click any Y‑series module to occupy Slot 1 → Slot 2 → Slot 3.