LLD-ModbusIO-02
The ModbusIO series provides 5 general module slots and 1 EXT expansion slot, so you can configure 9 ModIO function modules to match on-site point requirements — digital or analog signals, with a choice of resolutions. It uplinks over Modbus-RTU／TCP and supports LLD-DDC for programmable logic control.
Product Highlights
Low-Power Compute Core
ST STM8L152R8 low-power microcontroller — fanless, suited to continuous operation.
AC/DC Power Input
Takes 24 V as either AC or DC, so whichever supply the site already has can be used directly.
DDC Programming & Tooling
Control logic is written in the ICDT graphical compiler and downloaded to the board; the same tool handles parameter setup and online debugging.
Environmental Tolerance
Runs continuously inside an unventilated control cabinet; clips onto a standard DIN rail for quick installation.
Available Expansion Modules
ModIO-DI
4DI
4-channel digital input (wet contact / sink mode), 5–24VDC input voltage, 2000Vrms isolation + 400W surge protection
Single module slot · Up to 1
ModIO-DO
4DO
4-channel digital output (open collector), 5–30VDC@200mA load, 2000Vrms isolation + 400W surge protection
Single module slot · Up to 1
ModIO-Relay
2 Relay
2-channel relay output (SPDT), 2A@24VDC / 1A@120VAC contact rating, Auto / manual control
Single module slot · Up to 1
ModIO-AI
4AI
4-channel analog input, 12-bit resolution, 4–20mA / 0–10VDC / NTC signal types
Single module slot · Up to 1
ModIO-AO
4AO
4-channel analog output, 12-bit resolution, 4–20mA / 0–10VDC
Single module slot · Up to 1
ModIO-AIAO
2AI+2AO
2-in + 2-out combined analog, 12-bit resolution, 4–20mA / 0–10VDC
Single module slot · Up to 1
Modules are optional; actual I/O point count depends on the modules installed.
I/O Interfaces
Power Input
24V DC
Status LEDs
Operating status
Modbus Address
Slave address 0x01–0xF7
RS-485 Port
Modbus-RTU bus
I/O Module Terminal
ModIO module slot
Hardware Specifications
Full datasheet (PDF) →Hardware Specifications | |
|---|---|
| Ethernet | — |
| RS-485 | ×1 · 4,800–115,200 bps |
| Modbus protocol | RTU |
| General module slots (4-point) | 1 |
| EXT expansion slot (12-point) | — |
| Max I/O points | 4 |
| DDC function | ✓ |
| Power supply | 24V AC/DC |
| Board Dimensions | 92 × 87 × 23 mm |
Refer to the official datasheet for detailed electrical specifications.
Downloads
LLD-ModbusIO-02 Datasheet
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