CJ-8DI8DO-MP

PNP-type 8-port DI and 8-port DO Integrated Remote IO Controller

Support 2x100M copper ports, 8xDI inputs and 8xDO outputs
Support Modbus TCP protocol, and can remotely collect DI channel status and control DO channel status through Modbus TCP master station
Support multiple Modbus function code operations, DI supports 02/03/04 function codes, DO supports 01/03/05/06/15/16 function codes
Support DI input filtering and input retention, which helps to ensure signal stability and accuracy
Support multiple configuration software connections to expand PLC controller I/O points
Support DC9~36V power input and supports anti-reverse connection
High-strength aluminum alloy housing, IP40 protection grade, fanless housing heat dissipation, the equipment can reliably work in -40℃~+75℃ harsh industrial environment

CJ-8DI8DO-MP is a compact, industrial-grade remote I/O controller featuring 8 digital inputs and 8 digital outputs (PNP type) with Modbus TCP protocol support. It enables reliable acquisition and control of I/O status over Ethernet networks, making it ideal for industrial automation and remote monitoring applications.

Equipped with 2x100M RJ45 ports, the device supports daisy-chain networking and ensures stable communication. With a wide power input range (DC9~36V) and high-strength aluminum alloy enclosure, the controller is built to withstand demanding environments. Its fanless design, DIN rail mounting, and wide operating temperature (-40℃~+75℃) ensure reliable operation in harsh industrial settings.

The controller supports rich network functions via a web interface, including Modbus TCP, watchdog, input filtering, DO delay control, I/O status monitoring, DHCP client, user access management, network logs, system upgrades, and more. It has undergone rigorous testing for EMC, safety, and environmental resilience to meet the needs of energy systems, smart factories, intelligent transport, and more.

Software
Management	Support Modbus TCP protocol, up to 8 Modbus TCP master stations connected simultaneously Support Modbus watchdog time, TCP timer keep alive Support DI input filtering, input hold Support DO state control, restart hold Support DI and DO state monitoring
System Management	Support static IP, DHCP client Support user password, system information Support network log remote host monitoring Support online restart, factory reset, device upgrade
Interface
100M Copper Port	2×10/100Base-T(X) adaptive 100M RJ45 electrical ports, supporting full/half duplex, MDI/MDI-X adaptive
DI	Number of channels: 8xDI digital inputs Connection method: 10-bit 3.5mm pitch terminal blocks Modbus function code: 02, 03, 04 Rated voltage: DC24V (DC18~30V) Input type: wet contact PNP (Logic level 0: no external power input; logic level 1: DC18~30V external power input) Input filtering: 0~20ms Isolation protection: 500VAC (optocoupler isolation)
DO	Number of channels: 8xDO digital outputs Connection method: 10-bit 3.5mm pitch terminal blocks Modbus function code: 01, 03, 05, 06, 15, 16 Rated voltage: DC24V (DC18~30V) Rated current: 500mA (single channel) Output type: wet contact PNP Load type: resistive load, inductive load Isolation protection: 500VAC (optocoupler isolation) Interface protection: overvoltage, overcurrent, overload protection
Button	One-click restart or factory reset
Indicators	Power indicator, operation indicator, DI indicator, DO indicator, electrical port speed and connection status indicator
Power Supply
Power input	DC9~36V
Full load power consumption	<1.5W@DC24V
Connection method	3-position 5.08mm spacing terminal
Power protection	Anti-reverse connection
Mechanical
Dimensions	102×33×78 (mm) (excluding rail and connector dimensions)
Installation method	35mm standard rail installation
Case protection	High-strength aluminum alloy housing, IP40 protection grade
Weight	About 0.27kg
Working Environment
Operating temperature	-40℃~+75℃
Storage temperature	-40℃~+85℃
Relative humidity	5%~95% (no condensation)
Industry Standard
EMC	IEC 61000-4-2 (ESD): Level 4 (contact discharge ±8kV, air discharge ±15kV) IEC 61000-4-5 (Surge): Level 3 (power supply: common mode ±2kV, differential mode ±1kV; Ethernet port: common mode ±2kV, differential mode ±1kV) IEC 61000-4-4 (EFT): Level 4 (power supply: ±4kV; Ethernet port: ±2kV)