1. Product Overview

2. Main Features

• All-in-one hybrid I/O integrated design, compatible with mainstream industrial analog and digital signals

• 16-bit high precision resolution for all analog input and output channels

• Full software configurable for signal type, engineering range and operating parameters

• Built-in isolation, overvoltage, overcurrent, short-circuit and over-temperature protection function

• Equipped with RS485 communication interface, supports standard Modbus RTU protocol

• Wide operating temperature range, adaptable to harsh industrial field environment

• Digital channels support NPN/PNP logic selection and adjustable debounce time

• Analog channels support digital filtering and communication loss fail-safe mode setting

• Industrial flame-retardant plastic shell, compact structure, low power consumption

• High operation stability, suitable for long-term continuous industrial working condition

3. Technical Specifications

3.1 General Parameters

3.2 Channel Resource Configuration

3.3 Analog Performance Index

3.4 Communication Parameters

4. Safety Precautions

• Installation, wiring and maintenance work must be completed by qualified professional technical personnel.

• Must cut off all power supply before wiring, disassembly and maintenance to avoid electric shock and equipment damage.

• Do not install the module in the environment with flammable gas, explosive dust, corrosive gas or conductive dust.

• Reserve enough ventilation space around the module, do not block the heat dissipation gap.

• Signal cables and power cables shall be laid separately to reduce electromagnetic interference.

• The protective grounding terminal must be connected to reliable earth ground to ensure safety and anti-interference performance.

• It is forbidden to exceed the rated load range of each input and output channel.

• Do not disassemble, modify or refit the internal structure of the module without authorization.

5. Installation and Terminal Definition

5.1 DIN Rail Installation Steps

1. Fix the standard 35mm DIN rail firmly on the installation base surface.

2. Align the upper buckle of the module with the edge of the DIN rail.

3. Press the module downwards until the bottom locking buckle snaps into place.

4. Slightly shake the module to confirm it is installed firmly without sliding and loosening.

5.2 Terminal Pin Definition

5.3 Wiring Operation Instructions

1. Strip about 6mm insulation layer at the wire end.

2. Loosen the terminal screws with a standard screwdriver.

3. Insert the wire into the corresponding terminal hole strictly in accordance with the terminal definition.

4. Tighten the screws moderately to ensure reliable contact, avoid over-tightening damage.

5. Use cable ties to fix the wiring to prevent external pulling force from acting on the terminals.

6. Analog signal wiring uses shielded twisted-pair cable, and the shielding layer is grounded at single end.

7. Digital signal adopts stranded copper wire with appropriate wire gauge.

6. Parameter Configuration

6.1 Connection Method

6.2 Configurable Function Parameters

Analog Input

Analog Output

Digital Input

Digital Output

Communication Setting

6.3 Configuration Save and Effect

7. Operation Instruction

7.1 Power-on Self-test

7.2 Normal Working Description

• Analog Input: Collect analog signals of field sensors, convert them into digital data and upload to the upper control system in real time.

• Analog Output: Receive control commands from the main controller, convert into standard analog signals to adjust valves, actuators and other executing devices.

• Digital Input: Detect the on-off state of switches, proximity sensors and relays, and upload state change information in real time.

• Digital Output: According to system commands, control external relays, solenoid valves and indicator lights to switch on and off.

• Communication: Realize data interaction, parameter reading and writing with upper controller through Modbus RTU protocol.

7.3 Indicator Status Description

8. Daily Maintenance

• Regularly check the indicator working status and terminal tightness, check for oxidation and loose contact.

• Clean the module surface with dry soft cloth only, do not use liquid and chemical solvent for cleaning.

• Keep the ambient temperature and humidity within the specification allowable range.

• Regularly check the aging degree of external cables, and replace damaged wires in time.

• When the module is working abnormally, replace it with the same model and reconfigure parameters.

9. Troubleshooting

1. Power indicator not lit

   Cause: No 24VDC input, power polarity reversed or wire broken

   Solution: Check power circuit and wiring polarity, restore normal power supply
2. Status indicator red flashing

   Cause: Output overload, short circuit, self-test failure or communication interruption

   Solution: Disconnect field load to eliminate fault, restart module power supply
3. Analog input data abnormal

   Cause: Wrong signal type setting, loose terminal or mismatched load resistance

   Solution: Reconfigure channel signal type, fasten terminals and match load parameters
4. Analog output inaccurate

   Cause: Improper range setting, excessive load resistance or poor contact

   Solution: Reset engineering range, control load within rated specification
5. Digital input no response

   Cause: Wrong logic configuration, loose wiring or sensor abnormality

   Solution: Adjust input logic parameters, check and fasten wiring
6. Digital output cannot switch

   Cause: Overload current, incorrect logic mode or loose terminal

   Solution: Reduce load current to rated range, reconfigure logic and fasten terminals
7. RS485 communication failure

   Cause: Mismatched baud rate or address, A/B line reversed, lack of terminal resistance

   Solution: Unify communication parameters, correct A/B wiring, add matching terminal resistor

10. Warranty Provisions