32 Channel Digital Input Module 32 DI Industrial Remote I/O Module with Modbus RTU TCP
Product No.: YX3200
32 High-Speed Digital Inputs
Supports Dry Contact, PNP and NPN Inputs
Modbus RTU & Modbus TCP Communication
Industrial Optical Isolation Design
32 Channel Digital Input Module Modbus RTU TCP Remote I/O Controller
Product Details
Industrial 32 Channel Digital Input Module
The ZH-YX3200 is a professional industrial digital input acquisition module designed for high-density I/O monitoring and automation systems. It integrates 32 optically isolated digital inputs and supports standard Modbus RTU and Modbus TCP communication protocols.Built around a 32-bit industrial ARM processor, the module delivers fast response, high reliability and excellent anti-interference performance for factory automation and remote monitoring applications.
① 32 High-Speed Digital Inputs
Provides 32 independent optically isolated digital input channels for equipment status monitoring, switch detection and industrial automation systems. Input frequency supports up to 20kHz.
② Supports Dry Contact, PNP and NPN Inputs
Compatible with dry contacts, push buttons, limit switches, proximity sensors, PNP outputs and NPN outputs, making integration simple across various industrial applications.
③ Modbus RTU & Modbus TCP Communication
Supports RS485 and Ethernet communication interfaces with standard Modbus RTU and Modbus TCP protocols for seamless connectivity with PLC, HMI and SCADA systems.
④ Industrial Optical Isolation Design
Built with 3750Vrms optical isolation and 1500V communication isolation, delivering excellent noise immunity and long-term reliability.
Function
1.Flexible Industrial Signal Acquisition
Supported input signal types include:Dry Contact Inputs
Push Buttons
Limit Switches
Magnetic Switches
PNP Sensors
NPN Sensors
Open Collector Outputs
Industrial Pulse Signals
Suitable for equipment status monitoring, alarm systems, production lines and machine automation.
2.High-Speed Input Detection
Advanced input capabilities:
Up to 20kHz Signal Frequency
High-Speed Event Detection
Optional Counter Function
Optional Frequency Measurement
Optional Pulse Width Measurement
Ideal for industrial monitoring and process automation systems.
3.Industrial Communication Interfaces
Communication options:
RS485 Modbus RTU
Ethernet Modbus TCP
Dual RS485 Custom Version
Industrial Remote I/O Networking
Compatible with:
Siemens PLC
Schneider PLC
Mitsubishi PLC
Delta PLC
Omron PLC
Allen-Bradley PLC
Ignition SCADA
WinCC
KingView
Industrial IoT Gateways
4.Built-In Expansion Function
The module can directly network with other I/O modules without requiring a PLC, enabling:
Input Expansion
Relay Output Expansion
Analog Signal Acquisition Expansion
Distributed I/O Systems
Remote Monitoring Networks
This significantly reduces wiring complexity and lowers system integration costs.
| Parameter | Specification |
|---|---|
| Digital Inputs | 32 Channels |
| Input Isolation | 3750Vrms Optical Isolation |
| Input Signal Type | Dry Contact / PNP / NPN |
| Input Voltage Range | 0~30VDC |
| Low Level Threshold | 0~2.5VDC |
| High Level Threshold | 4.5~30VDC |
| Input Impedance | 3KΩ ±200Ω |
| Maximum Input Frequency | 20kHz |
| Communication Interface | RS485 / Ethernet RJ45 |
| Communication Protocol | Modbus RTU / Modbus TCP |
| Communication Isolation | 1500V |
| Communication Speed | 9600~115200bps |
| RS485 Distance | Up to 1200m |
| Power Supply | DC9~30V |
| Power Consumption | <1.2W |
| Operating Temperature | -40°C to +60°C |
| Installation Method | DIN Rail / Screw Mounting |
Product Model
| Model | Input Channels | Communication | Description |
|---|---|---|---|
| ZH-YX3200-14N | 32DI | RS485 | Standard Modbus RTU Version |
| ZH-YX3200-34N | 32DI | Ethernet | Modbus TCP Version |
| ZH-YX3200-1A4N | 32DI | Dual RS485 | Custom Expansion Version |
Applications
1.PLC Input ExpansionExpand digital input channels for PLC control systems.
Monitor machine status, emergency stops, limit switches and alarm signals.
3.Smart Factory Automation
Production line status acquisition and distributed I/O control.
4.Building Automation
HVAC monitoring, access control and lighting status collection.
5.Water Treatment Systems
Pump station monitoring and valve position feedback.
6.Energy Management Systems
Equipment operating status monitoring and fault detection.
7.Industrial IoT
Edge device data acquisition and remote monitoring systems.
Q1: How many digital inputs are available?
The module provides 32 optically isolated digital input channels.
Q2: Does the module support PNP and NPN sensors?
Yes. It supports dry contact, PNP and NPN signal inputs.
Q3: What communication protocols are supported?
The module supports Modbus RTU and Modbus TCP protocols.
Q4: What is the maximum supported input frequency?
The module supports input frequencies up to 20kHz.
Q5: Can the module communicate directly with other I/O modules?
Yes. The module supports direct networking and linkage control with compatible I/O modules without requiring a PLC.
