1. Product Overview

2. Main Features

• Integrated hybrid channel design, compatible with multiple signal types

• 16-bit high precision analog sampling and output

• Software configurable for signal type and parameter range

• Built-in electrical isolation, overvoltage, overcurrent, short circuit and thermal protection

• Support Modbus RTU communication protocol

• Wide working temperature range, suitable for harsh industrial environment

• DIN rail mounting, simple wiring and convenient maintenance

• Digital channel with configurable input logic and debounce time

• Analog channel with adjustable filter and fail-safe output mode

3. Technical Specifications

3.1 General Parameters

3.2 Channel Configuration

3.3 Analog Performance

3.4 Communication Parameters

4. Safety Instructions

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

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

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

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

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

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

• Do not exceed the rated load range of input and output channels, otherwise it will cause module damage.

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

5. Installation and Wiring

5.1 DIN Rail Installation

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

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

3. Press the module downward until the bottom lock snaps into the rail.

4. Pull the module slightly to confirm it is installed firmly without sliding.

5.2 Terminal Definition

5.3 Wiring Steps

1. Strip the cable insulation to about 6mm length.

2. Loosen the terminal screws with a standard screwdriver.

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

4. Tighten the terminal screws properly to avoid loose contact; do not over tighten to prevent thread damage.

5. Use cable ties to fix the wiring to avoid pulling the terminals by external force.

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

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

6. Parameter Configuration

6.1 Connection Method

6.2 Configurable Parameters

Analog Input

Analog Output

Digital Input

Digital Output

Communication Setting

6.3 Save and Take Effect

7. Operation Description

7.1 Power-on Self-check

7.2 Working Mode

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

• Analog Output: Receive control commands from the system and convert them into standard analog signals to regulate actuators such as valves.

• Digital Input: Detect switch and sensor level state, 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 with upper controller through Modbus RTU protocol.

7.3 Indicator Status

8. Daily Maintenance

• Regularly check whether the indicator state is normal and whether the wiring terminal is loose or oxidized.

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

• Check whether the working environment temperature and humidity are within the allowable range.

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

• When the module performance is abnormal, replace it with the same model and reconfigure parameters.

9. Fault Troubleshooting

1. Power indicator not on

   Cause: No 24VDC input, reverse power polarity or line breakage

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

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

   Solution: Disconnect field load to check short circuit and overload, restart module power supply
3. Analog input data abnormal

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

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

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

   Solution: Reset parameter range, adjust load within rated range
5. Digital input no response

   Cause: Wrong logic configuration, loose wiring or abnormal sensor signal

   Solution: Modify input logic setting, check and fasten wiring
6. Digital output cannot switch

   Cause: Overload current, wrong logic mode or terminal loose

   Solution: Reduce load within rated current, reconfigure logic and fasten wiring
7. RS485 communication failure

   Cause: Incorrect baud rate and address, A/B line reverse connection or lack of terminal resistance

   Solution: Unify communication parameters, adjust A/B wiring, add matching terminal resistance

10. Warranty Terms