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Home › Products › IO Cards › WT32i
IO Cards
Analog / Digital IO Card — 32 Module
High-capacity Modbus Analog/Digital IO expansion card — ten digital inputs and eight relay outputs with analog channels and a configurable watchdog, driven entirely over RS485 Modbus RTU.
10× DI|8× RELAY OUT|2 + 2 ANALOG|RS485 MODBUS RTU
10
Digital Inputs(0–24 V)
8
Digital Outputs(Relay · Modbus coils)
2 + 2
Analog Inputs(0–10 V / 4–20 mA)
Watchdog
Configurable Failsafe
RS485 · Modbus RTU
Slave Interface
12 – 24V DC
Wide Voltage Input
Generic Modbus Analog/Digital IO card — works with any Modbus RTU master.
Mechanical drawings & pin details are included in the datasheet.
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Login to Client PortalRugged & Reliable
Industrial Grade
OEM Ready
Long Term Support
Specifications
| I/O Specification | |
|---|---|
| Digital Input | 10 × 0–24 V |
| Digital Output | 8 × Relay (Modbus coils) |
| Analog Input (0–10 V) | 2 channels (float) |
| Current Input (4–20 mA) | 2 channels (float) |
| Watchdog | Configurable via Modbus |
| Serial | |
|---|---|
| Interface | RS485 — Modbus RTU Slave |
| Baud Rates | 2400 – 115200 bps (reg 40102) |
| Data Bits | 8 |
| Parity | None / Even / Odd (reg 40104) |
| Stop Bits | 1 / 2 (reg 40105) |
General Specifications
| Power Supply | 12–24 V DC |
| Interface | RS485 · Modbus RTU (Slave) |
| Status LEDs | RX · TX · CON · PWR |
| Field Wiring | Screw terminals |
| Configuration | Via holding registers — any Modbus master |
Configuration Registers
| Device ID | 40101 · 1 – 247 (R/W) |
| Baud Rate | 40102 · 0–7 = 2400 – 115200 |
| Parity | 40104 · None / Even / Odd |
| Stop Bits | 40105 · 1 or 2 |
| Scaling & Modes | Configurable via holding registers |
Interfaces
Power Supply
12–24 V DC
Digital Inputs
10× 0–24 V (DI-1 … DI-10)
Relay Outputs
8× COM / NC / NO terminals
Analog Inputs
2× 0–10 V (registers 30003 / 30005)
Current Inputs
2× 4–20 mA (registers 30011 / 30013)
Watchdog
Configurable failsafe output states
RS485 Port
Modbus RTU slave · A/D+ / B/D–
LED Indicators
CMD · TX · RX · FLT · RUN · DO / DIN
Need a customized version?
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OEM / White-Label Ready
Your brand. Our technology.
Quality Assured
Rigorous testing & certified quality.
Designed & Built in India
Engineering excellence with global standards.
