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- 16 Sourcing Digital Inputs: Each channel supports 24VDC input signals with high reliability and fast response.
- Standard Modbus RTU/ASCII Protocol: Ensures compatibility with most industrial automation systems and SCADA software.
- RS-485 3-Wire Communication Interface: Supports up to 63 modules on a single network without repeaters, with a maximum distance of 4000 feet.
- High Isolation Protection: 3-way isolation (RS-485, field-to-logic, and channel-to-channel) rated up to 5kVrms for field-to-logic isolation.
- Wide Operating Temperature Range: -30°C to +75°C, suitable for harsh industrial environments.
- User-Friendly LED Indicators: Real-time status LEDs for power, communication, and input channel states.
- Configurable Input Processing: Includes debounce, invert, on/off delay, pulse generation, toggle, and latch functions.
- Built-in Watchdog Timer: Hardware watchdog ensures continuous operation and system safety.
- DIN-Rail Mountable Compact Design: 132 × 125 × 47.5 mm enclosure for easy integration into control panels.
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- Software-Free Configuration: DIP switches for baud rate, address, and protocol selection—no PC utility required for basic setup.
- Simulation and Test Modes: Allows input simulation for system testing and commissioning.
- Long MTBF and Industrial Durability: Designed for continuous operation in power plants, steel mills, and petrochemical facilities.
- Standard Modbus RTU/ASCII Protocol: Ensures compatibility with most industrial automation systems and SCADA software.
- RS-485 3-Wire Communication Interface: Supports up to 63 modules on a single network without repeaters, with a maximum distance of 4000 feet.
- High Isolation Protection: 3-way isolation (RS-485, field-to-logic, and channel-to-channel) rated up to 5kVrms for field-to-logic isolation.
- Wide Operating Temperature Range: -30°C to +75°C, suitable for harsh industrial environments.
- User-Friendly LED Indicators: Real-time status LEDs for power, communication, and input channel states.
- Configurable Input Processing: Includes debounce, invert, on/off delay, pulse generation, toggle, and latch functions.
- Built-in Watchdog Timer: Hardware watchdog ensures continuous operation and system safety.
- DIN-Rail Mountable Compact Design: 132 × 125 × 47.5 mm enclosure for easy integration into control panels.
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- Software-Free Configuration: DIP switches for baud rate, address, and protocol selection—no PC utility required for basic setup.
- Simulation and Test Modes: Allows input simulation for system testing and commissioning.
- Long MTBF and Industrial Durability: Designed for continuous operation in power plants, steel mills, and petrochemical facilities.
Comprehensive Product Summary – SUNIX ioSCADA SM_DI_116P 16-Channel 24VDC Digital Input Module
### 1. Product Overview
Product Name: 16-Channel 24VDC Digital Input Module
Model: SM_DI_116P
Series: SUNIX ioSCADA SM Series
Article Number: SM_DI_116P
Manufacturer: SUNIX Group
The SUNIX SM_DI_116P is a high-performance industrial-grade digital input module designed for distributed control and data acquisition systems. It belongs to the ioSCADA SM series, a family of modular Modbus I/O devices supporting both Modbus RTU and ASCII protocols over RS-485 networks. The SM_DI_116P provides 16 sourcing-type digital input channels optimized for 24VDC operation, offering robust isolation, high noise immunity, and flexible configuration for SCADA, PLC, and DCS applications.
### 2. Key Features
- 16 Sourcing Digital Inputs: Each channel supports 24VDC input signals with high reliability and fast response.
- Standard Modbus RTU/ASCII Protocol: Ensures compatibility with most industrial automation systems and SCADA software.
- RS-485 3-Wire Communication Interface: Supports up to 63 modules on a single network without repeaters, with a maximum distance of 4000 feet.
- High Isolation Protection: 3-way isolation (RS-485, field-to-logic, and channel-to-channel) rated up to 5kVrms for field-to-logic isolation.
- Wide Operating Temperature Range: -30°C to +75°C, suitable for harsh industrial environments.
- User-Friendly LED Indicators: Real-time status LEDs for power, communication, and input channel states.
- Configurable Input Processing: Includes debounce, invert, on/off delay, pulse generation, toggle, and latch functions.
- Built-in Watchdog Timer: Hardware watchdog ensures continuous operation and system safety.
- DIN-Rail Mountable Compact Design: 132 × 125 × 47.5 mm enclosure for easy integration into control panels.
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- Software-Free Configuration: DIP switches for baud rate, address, and protocol selection—no PC utility required for basic setup.
- Simulation and Test Modes: Allows input simulation for system testing and commissioning.
- Long MTBF and Industrial Durability: Designed for continuous operation in power plants, steel mills, and petrochemical facilities.
### 3. Technical Specifications
Electrical Characteristics
- Input Channels: 16 sourcing inputs
- Input Type: 24VDC digital input (sourcing)
- Input Resistance: 4.7 kΩ typical
- Input Voltage Range: 0–35 VDC (maximum)
- Input Current: 5.1 mA typical @ 24VDC
- Logic Levels:
- OFF state: < 4 VDC
- ON state: > 10 VDC
- Input Response Time: ≤ 1 ms
- Maximum Reverse Voltage: 35 VDC
- Maximum Input Current: 10 mA
- Fast Mode Counting Frequency: 300 Hz
- Isolation (Field to Logic): 5 kVrms
- Common Ground: 1 common for 16 channels
- Power Supply: 10–30 VDC
- Power Consumption: 0.0617A @ 24VDC typical
- Wiring: 16–24 AWG I/O cable
Physical Characteristics
- Dimensions: 132 × 125 × 47.5 mm
- Mounting: DIN-rail or panel mount
- Weight: Approx. 0.5 kg (typical)
- Enclosure: Industrial-grade plastic housing
Environmental Conditions
- Operating Temperature: -30°C to +75°C
- Storage Temperature: -45°C to +85°C
- Relative Humidity: 5–90% non-condensing
- Protection: 3-way isolation (RS-485, field-to-logic, channel-to-channel)
Communication Interface
- Interface Type: RS-485 (3-wire: Data+, Data-, COM)
- Protocol: Modbus RTU / Modbus ASCII
- Baud Rates: 1200, 2400, 4800, 9600, 19.2k, 38.4k, 57.6k, 115.2k bps (default 115.2k)
- Data Format: 8 data bits, no parity, 1 stop bit
- Address Range: 1–63 (default 1)
- Network Distance: Up to 4000 ft (1200 m) without repeater
- Isolation Voltage: 3000 Vrms (RS-485), 5000 Vrms (field-to-logic)
- Overvoltage Protection: 70 VDC/Vp-p
### 4. Functionality
The SM_DI_116P module serves as a remote digital input interface for industrial control systems. It collects binary input signals from field devices such as sensors, switches, and contactors, and transmits their status to a host controller via Modbus over RS-485. Each input channel can be independently configured for signal conditioning and timing functions.
Functional Capabilities:
- Debounce Filtering: Adjustable 0–65535 ms (5 ms resolution) to eliminate noise and contact bounce.
- Input Inversion: Logical inversion of input signal for flexible wiring.
- On/Off Delay Timers: Adjustable 0–65535 s (1 s resolution) for alarm or event delay.
- Pulse Generation: Programmable pulse duration 0–65535 s (1 s resolution).
- Toggle Function: Converts momentary input changes into toggled output states.
- Latch Function: Captures transient ON/OFF events to prevent missed signals.
- Pulse Counter: Counts input transitions up to 300 Hz.
- Simulation Mode: Allows manual input simulation for testing without field wiring.
- Timer Accuracy: ±1%.
Applications:
- SCADA and DCS remote I/O systems
- PLC digital input expansion
- Industrial process monitoring
- Machine automation and safety interlocks
- Power plant and substation control
- Building automation and environmental monitoring
### 5. Components & Accessories
Included Items:
- SM_DI_116P module
- DIN-rail mounting accessory
- Installation CD with ioCFG configuration software
- Quick installation guide
Optional Accessories:
- RS-232/RS-485 isolation converter
- RS-485 repeater (for networks >1200 m)
- Shielded twisted-pair communication cables
- Panel mounting brackets
Connectors:
- Removable terminal blocks for I/O, power, and communication
- Independent terminal blocks for easy maintenance and wiring
### 6. Installation & Setup
Requirements:
- Power supply: 10–30 VDC (industrial-grade, IEC61000-4-4 compliant)
- Host system: SCADA, PLC, PAC, or DCS with Modbus RTU/ASCII support
- Communication: RS-485 3-wire shielded twisted pair
Mounting Options:
- DIN-rail (horizontal or vertical orientation)
- Panel mounting with included accessories
Configuration:
- DIP switches for baud rate, address, and protocol selection
- Default settings: 115.2 kbps, address 1, Modbus RTU
- Reset to factory defaults via DIP switch (INIT function)
- Built-in RS-485 termination resistor (switch selectable)
LED Indicators:
- PWR: Power status
- RX/TX: Communication activity
- IO_ACC: CPU operation status
- Rt_ON: RS-485 termination resistor status
- Channel LEDs: Individual input status indicators
Software Configuration (optional):
- ioCFG Utility: Windows-based configuration and monitoring tool
- Auto-detects connected modules
- Supports parameter upload/download and EEPROM storage
- Allows real-time data monitoring and simulation
### 7. Performance & Capabilities
- Input Response Time: ≤ 1 ms
- Counting Frequency: Up to 300 Hz
- Timer Resolution: 1 s (delay), 5 ms (debounce)
- Timer Accuracy: ±1%
- Network Capacity: Up to 63 modules per RS-485 segment
- Communication Speed: Up to 115.2 kbps
- Isolation Voltage: 5 kVrms (field-to-logic), 3 kVrms (RS-485)
- Noise Immunity: IEC61000-4-4 Level 3 (EFT), IEC61000-4-2 Level 3 (ESD)
- Reliability: Long MTBF, industrial-grade components
- Operating Temperature Range: -30°C to +75°C
Limitations:
- Digital input only (no output capability)
- Maximum input voltage 35 VDC
- Common ground shared across all 16 channels
### 8. Standards & Compliance
Electrical and EMC Standards:
- EFT Immunity: IEC61000-4-4 Level 3 (power and signal lines)
- ESD Immunity: IEC61000-4-2 Level 3 (8 kV air, 4 kV contact)
- Surge Immunity: IEC61000-4-5 (0.5 kV)
- CE Compliant
Isolation and Safety:
- RS-485 isolation: 3000 Vrms
- Field-to-logic isolation: 5000 Vrms
- Channel-to-channel isolation: Yes
- Overvoltage protection: 70 VDC/Vp-p
Communication Protocol Compliance:
- Modbus RTU and ASCII (standard Modbus function codes 1, 2, 3, 4, 5, 6, 8, 15, 16, 17)
- Supports broadcast and exception handling
Environmental Compliance:
- Designed for industrial environments with high EMI/RFI immunity
- Suitable for installation in power, steel, and petrochemical plants
### 9. Additional Information
Warranty & Service Policy:
- Warranty Period: 2 years from delivery or 1 year after installation (whichever comes first)
- Coverage: Manufacturing defects under normal operation
- Exclusions: Damage due to misuse, improper installation, or environmental conditions beyond specifications
- Repair Policy: Free repair within warranty (shipping costs borne by customer); post-warranty repairs charged at ~25% of product price
- RMA Procedure: Requires authorization code, problem description, and proof of purchase
Maintenance:
- Periodic inspection of wiring and terminal connections
- Ensure proper grounding (PE) and shielding for RS-485 network
- Replace fuses or damaged connectors as needed
Support & Updates:
- Firmware updates available via SUNIX technical support
- ioCFG software updates provided free of charge
- Technical documentation and Modbus register maps available from SUNIX
Compatibility:
- Works with major SCADA software: LabView, Wonderware, Citect, Intellution, etc.
- Integrates seamlessly with PLCs and DCS systems supporting Modbus RTU/ASCII
Power Consumption Summary (24VDC):
- Typical: 0.0617A
- Minimum: 0.0474A
- Maximum: 0.1244A
### Summary
The SUNIX SM_DI_116P is a robust, high-isolation, 16-channel 24VDC digital input module engineered for industrial automation and SCADA systems. It combines flexible Modbus communication, advanced input processing, and rugged environmental tolerance in a compact DIN-rail form factor. With its 5kVrms isolation, wide temperature range, and configurable timing functions, it ensures reliable signal acquisition in demanding environments such as power generation, steel manufacturing, and petrochemical processing. The module’s ease of installation, DIP-switch configuration, and LED diagnostics make it an ideal choice for distributed I/O networks requiring dependable digital input performance.
### 1. Product Overview
Product Name: 16-Channel 24VDC Digital Input Module
Model: SM_DI_116P
Series: SUNIX ioSCADA SM Series
Article Number: SM_DI_116P
Manufacturer: SUNIX Group
The SUNIX SM_DI_116P is a high-performance industrial-grade digital input module designed for distributed control and data acquisition systems. It belongs to the ioSCADA SM series, a family of modular Modbus I/O devices supporting both Modbus RTU and ASCII protocols over RS-485 networks. The SM_DI_116P provides 16 sourcing-type digital input channels optimized for 24VDC operation, offering robust isolation, high noise immunity, and flexible configuration for SCADA, PLC, and DCS applications.
### 2. Key Features
- 16 Sourcing Digital Inputs: Each channel supports 24VDC input signals with high reliability and fast response.
- Standard Modbus RTU/ASCII Protocol: Ensures compatibility with most industrial automation systems and SCADA software.
- RS-485 3-Wire Communication Interface: Supports up to 63 modules on a single network without repeaters, with a maximum distance of 4000 feet.
- High Isolation Protection: 3-way isolation (RS-485, field-to-logic, and channel-to-channel) rated up to 5kVrms for field-to-logic isolation.
- Wide Operating Temperature Range: -30°C to +75°C, suitable for harsh industrial environments.
- User-Friendly LED Indicators: Real-time status LEDs for power, communication, and input channel states.
- Configurable Input Processing: Includes debounce, invert, on/off delay, pulse generation, toggle, and latch functions.
- Built-in Watchdog Timer: Hardware watchdog ensures continuous operation and system safety.
- DIN-Rail Mountable Compact Design: 132 × 125 × 47.5 mm enclosure for easy integration into control panels.
- High Noise Immunity: Meets IEC61000-4-4 EFT Level 3 and IEC61000-4-2 ESD Level 3 standards.
- Software-Free Configuration: DIP switches for baud rate, address, and protocol selection—no PC utility required for basic setup.
- Simulation and Test Modes: Allows input simulation for system testing and commissioning.
- Long MTBF and Industrial Durability: Designed for continuous operation in power plants, steel mills, and petrochemical facilities.
### 3. Technical Specifications
Electrical Characteristics
- Input Channels: 16 sourcing inputs
- Input Type: 24VDC digital input (sourcing)
- Input Resistance: 4.7 kΩ typical
- Input Voltage Range: 0–35 VDC (maximum)
- Input Current: 5.1 mA typical @ 24VDC
- Logic Levels:
- OFF state: < 4 VDC
- ON state: > 10 VDC
- Input Response Time: ≤ 1 ms
- Maximum Reverse Voltage: 35 VDC
- Maximum Input Current: 10 mA
- Fast Mode Counting Frequency: 300 Hz
- Isolation (Field to Logic): 5 kVrms
- Common Ground: 1 common for 16 channels
- Power Supply: 10–30 VDC
- Power Consumption: 0.0617A @ 24VDC typical
- Wiring: 16–24 AWG I/O cable
Physical Characteristics
- Dimensions: 132 × 125 × 47.5 mm
- Mounting: DIN-rail or panel mount
- Weight: Approx. 0.5 kg (typical)
- Enclosure: Industrial-grade plastic housing
Environmental Conditions
- Operating Temperature: -30°C to +75°C
- Storage Temperature: -45°C to +85°C
- Relative Humidity: 5–90% non-condensing
- Protection: 3-way isolation (RS-485, field-to-logic, channel-to-channel)
Communication Interface
- Interface Type: RS-485 (3-wire: Data+, Data-, COM)
- Protocol: Modbus RTU / Modbus ASCII
- Baud Rates: 1200, 2400, 4800, 9600, 19.2k, 38.4k, 57.6k, 115.2k bps (default 115.2k)
- Data Format: 8 data bits, no parity, 1 stop bit
- Address Range: 1–63 (default 1)
- Network Distance: Up to 4000 ft (1200 m) without repeater
- Isolation Voltage: 3000 Vrms (RS-485), 5000 Vrms (field-to-logic)
- Overvoltage Protection: 70 VDC/Vp-p
### 4. Functionality
The SM_DI_116P module serves as a remote digital input interface for industrial control systems. It collects binary input signals from field devices such as sensors, switches, and contactors, and transmits their status to a host controller via Modbus over RS-485. Each input channel can be independently configured for signal conditioning and timing functions.
Functional Capabilities:
- Debounce Filtering: Adjustable 0–65535 ms (5 ms resolution) to eliminate noise and contact bounce.
- Input Inversion: Logical inversion of input signal for flexible wiring.
- On/Off Delay Timers: Adjustable 0–65535 s (1 s resolution) for alarm or event delay.
- Pulse Generation: Programmable pulse duration 0–65535 s (1 s resolution).
- Toggle Function: Converts momentary input changes into toggled output states.
- Latch Function: Captures transient ON/OFF events to prevent missed signals.
- Pulse Counter: Counts input transitions up to 300 Hz.
- Simulation Mode: Allows manual input simulation for testing without field wiring.
- Timer Accuracy: ±1%.
Applications:
- SCADA and DCS remote I/O systems
- PLC digital input expansion
- Industrial process monitoring
- Machine automation and safety interlocks
- Power plant and substation control
- Building automation and environmental monitoring
### 5. Components & Accessories
Included Items:
- SM_DI_116P module
- DIN-rail mounting accessory
- Installation CD with ioCFG configuration software
- Quick installation guide
Optional Accessories:
- RS-232/RS-485 isolation converter
- RS-485 repeater (for networks >1200 m)
- Shielded twisted-pair communication cables
- Panel mounting brackets
Connectors:
- Removable terminal blocks for I/O, power, and communication
- Independent terminal blocks for easy maintenance and wiring
### 6. Installation & Setup
Requirements:
- Power supply: 10–30 VDC (industrial-grade, IEC61000-4-4 compliant)
- Host system: SCADA, PLC, PAC, or DCS with Modbus RTU/ASCII support
- Communication: RS-485 3-wire shielded twisted pair
Mounting Options:
- DIN-rail (horizontal or vertical orientation)
- Panel mounting with included accessories
Configuration:
- DIP switches for baud rate, address, and protocol selection
- Default settings: 115.2 kbps, address 1, Modbus RTU
- Reset to factory defaults via DIP switch (INIT function)
- Built-in RS-485 termination resistor (switch selectable)
LED Indicators:
- PWR: Power status
- RX/TX: Communication activity
- IO_ACC: CPU operation status
- Rt_ON: RS-485 termination resistor status
- Channel LEDs: Individual input status indicators
Software Configuration (optional):
- ioCFG Utility: Windows-based configuration and monitoring tool
- Auto-detects connected modules
- Supports parameter upload/download and EEPROM storage
- Allows real-time data monitoring and simulation
### 7. Performance & Capabilities
- Input Response Time: ≤ 1 ms
- Counting Frequency: Up to 300 Hz
- Timer Resolution: 1 s (delay), 5 ms (debounce)
- Timer Accuracy: ±1%
- Network Capacity: Up to 63 modules per RS-485 segment
- Communication Speed: Up to 115.2 kbps
- Isolation Voltage: 5 kVrms (field-to-logic), 3 kVrms (RS-485)
- Noise Immunity: IEC61000-4-4 Level 3 (EFT), IEC61000-4-2 Level 3 (ESD)
- Reliability: Long MTBF, industrial-grade components
- Operating Temperature Range: -30°C to +75°C
Limitations:
- Digital input only (no output capability)
- Maximum input voltage 35 VDC
- Common ground shared across all 16 channels
### 8. Standards & Compliance
Electrical and EMC Standards:
- EFT Immunity: IEC61000-4-4 Level 3 (power and signal lines)
- ESD Immunity: IEC61000-4-2 Level 3 (8 kV air, 4 kV contact)
- Surge Immunity: IEC61000-4-5 (0.5 kV)
- CE Compliant
Isolation and Safety:
- RS-485 isolation: 3000 Vrms
- Field-to-logic isolation: 5000 Vrms
- Channel-to-channel isolation: Yes
- Overvoltage protection: 70 VDC/Vp-p
Communication Protocol Compliance:
- Modbus RTU and ASCII (standard Modbus function codes 1, 2, 3, 4, 5, 6, 8, 15, 16, 17)
- Supports broadcast and exception handling
Environmental Compliance:
- Designed for industrial environments with high EMI/RFI immunity
- Suitable for installation in power, steel, and petrochemical plants
### 9. Additional Information
Warranty & Service Policy:
- Warranty Period: 2 years from delivery or 1 year after installation (whichever comes first)
- Coverage: Manufacturing defects under normal operation
- Exclusions: Damage due to misuse, improper installation, or environmental conditions beyond specifications
- Repair Policy: Free repair within warranty (shipping costs borne by customer); post-warranty repairs charged at ~25% of product price
- RMA Procedure: Requires authorization code, problem description, and proof of purchase
Maintenance:
- Periodic inspection of wiring and terminal connections
- Ensure proper grounding (PE) and shielding for RS-485 network
- Replace fuses or damaged connectors as needed
Support & Updates:
- Firmware updates available via SUNIX technical support
- ioCFG software updates provided free of charge
- Technical documentation and Modbus register maps available from SUNIX
Compatibility:
- Works with major SCADA software: LabView, Wonderware, Citect, Intellution, etc.
- Integrates seamlessly with PLCs and DCS systems supporting Modbus RTU/ASCII
Power Consumption Summary (24VDC):
- Typical: 0.0617A
- Minimum: 0.0474A
- Maximum: 0.1244A
### Summary
The SUNIX SM_DI_116P is a robust, high-isolation, 16-channel 24VDC digital input module engineered for industrial automation and SCADA systems. It combines flexible Modbus communication, advanced input processing, and rugged environmental tolerance in a compact DIN-rail form factor. With its 5kVrms isolation, wide temperature range, and configurable timing functions, it ensures reliable signal acquisition in demanding environments such as power generation, steel manufacturing, and petrochemical processing. The module’s ease of installation, DIP-switch configuration, and LED diagnostics make it an ideal choice for distributed I/O networks requiring dependable digital input performance.
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ModBus-IO-Modules.pdf
PDF Catalog
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ioSCADA-Series_manual_En.pdf
Manual
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