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- Isolated Digital I/O: Provides galvanic isolation between input/output channels and communication interface, protecting connected equipment and ensuring signal reliability.
- RS485 Communication Interface: Supports half-duplex serial communication using the RS485 standard, allowing long-distance data transmission and multi-drop network configurations.
- ASCII Protocol Support: Communicates using a simple ASCII-based command set, enabling easy integration with PLCs, SCADA systems, and industrial PCs without complex protocol stacks.
- Modular Design: Compact form factor suitable for DIN-rail or panel mounting, allowing flexible deployment in distributed control architectures.
- Industrial-Grade Reliability: Designed for harsh environments with robust electrical protection, extended temperature tolerance, and durable housing materials.
- Flexible Digital I/O Configuration: Supports multiple digital input and output channels for monitoring sensors, switches, and controlling actuators or relays.
- Noise Immunity and Signal Integrity: High isolation voltage and filtering ensure stable operation in electrically noisy industrial settings.
- Scalable Network Integration: Multiple C1702 modules can be connected on a single RS485 bus, supporting multi-node communication and distributed I/O expansion.
- Low Power Consumption: Optimized for energy-efficient operation in continuous industrial processes.
- RS485 Communication Interface: Supports half-duplex serial communication using the RS485 standard, allowing long-distance data transmission and multi-drop network configurations.
- ASCII Protocol Support: Communicates using a simple ASCII-based command set, enabling easy integration with PLCs, SCADA systems, and industrial PCs without complex protocol stacks.
- Modular Design: Compact form factor suitable for DIN-rail or panel mounting, allowing flexible deployment in distributed control architectures.
- Industrial-Grade Reliability: Designed for harsh environments with robust electrical protection, extended temperature tolerance, and durable housing materials.
- Flexible Digital I/O Configuration: Supports multiple digital input and output channels for monitoring sensors, switches, and controlling actuators or relays.
- Noise Immunity and Signal Integrity: High isolation voltage and filtering ensure stable operation in electrically noisy industrial settings.
- Scalable Network Integration: Multiple C1702 modules can be connected on a single RS485 bus, supporting multi-node communication and distributed I/O expansion.
- Low Power Consumption: Optimized for energy-efficient operation in continuous industrial processes.
1. Product Overview
Product Name: Digital I/O Module, Isolated, RS485 Communication
Model: C1702
Series: C1700 Series – Industrial Data Acquisition and Communication Modules
Article Number: C1702
Manufacturer: [Manufacturer not specified – typically used in industrial automation and control systems]
The C1702 Digital I/O Isolated Module (RS485) is a compact, high-performance data acquisition and control device designed for industrial environments requiring reliable, isolated digital input and output communication over an RS485 interface. It is part of a modular family of industrial I/O modules optimized for distributed control, monitoring, and data collection applications. The C1702 provides robust electrical isolation, ensuring signal integrity and protection against electrical noise, surges, and ground loops commonly found in industrial automation systems.
2. Key Features
- Isolated Digital I/O: Provides galvanic isolation between input/output channels and communication interface, protecting connected equipment and ensuring signal reliability.
- RS485 Communication Interface: Supports half-duplex serial communication using the RS485 standard, allowing long-distance data transmission and multi-drop network configurations.
- ASCII Protocol Support: Communicates using a simple ASCII-based command set, enabling easy integration with PLCs, SCADA systems, and industrial PCs without complex protocol stacks.
- Modular Design: Compact form factor suitable for DIN-rail or panel mounting, allowing flexible deployment in distributed control architectures.
- Industrial-Grade Reliability: Designed for harsh environments with robust electrical protection, extended temperature tolerance, and durable housing materials.
- Flexible Digital I/O Configuration: Supports multiple digital input and output channels for monitoring sensors, switches, and controlling actuators or relays.
- Noise Immunity and Signal Integrity: High isolation voltage and filtering ensure stable operation in electrically noisy industrial settings.
- Scalable Network Integration: Multiple C1702 modules can be connected on a single RS485 bus, supporting multi-node communication and distributed I/O expansion.
- Low Power Consumption: Optimized for energy-efficient operation in continuous industrial processes.
3. Technical Specifications
*(Note: Some values are inferred based on typical industrial RS485 I/O modules; actual specifications should be verified with manufacturer documentation.)*
- Model: C1702
- Article Number: C1702
- Type: Digital I/O Module, Isolated, RS485 Communication
- Communication Interface: RS485 (2-wire, half-duplex)
- Protocol: ASCII-based serial communication
- Isolation Voltage: Typically 1500–2500 VDC between I/O and communication interface
- Digital Inputs: 8–16 channels (typical), optically isolated
- Digital Outputs: 8–16 channels (typical), transistor or relay type, isolated
- Input Voltage Range: 0–30 VDC (typical logic level detection)
- Output Voltage Range: 5–30 VDC (depending on output type)
- Output Current: Up to 500 mA per channel (transistor output) or 2 A (relay output)
- Communication Speed: 1200–115200 bps (baud rate configurable)
- Address Range: 1–255 (node addressing for multi-drop RS485 networks)
- Power Supply: 10–30 VDC (nominal 24 VDC)
- Power Consumption: < 3 W typical
- Isolation Type: Optical and galvanic isolation between channels and communication bus
- Operating Temperature: -20 °C to +60 °C
- Storage Temperature: -40 °C to +85 °C
- Humidity: 10–90% RH, non-condensing
- Dimensions: Approx. 100 mm (H) × 70 mm (W) × 25 mm (D)
- Weight: Approx. 150–250 g
- Mounting: DIN-rail or panel mount
- Material: Industrial-grade ABS or polycarbonate enclosure
- Protection Class: IP20 (typical for control cabinet installation)
4. Functionality
The C1702 Digital I/O Isolated Module functions as a remote data acquisition and control interface that connects field-level digital signals to supervisory control systems via RS485 communication.
Working Principle:
- The module receives digital input signals from sensors, switches, or other binary devices. Each input channel is optically isolated to prevent electrical interference and protect the communication bus.
- Digital output channels can drive actuators, relays, or indicator lights based on commands received from the host system.
- Communication occurs over an RS485 serial bus using ASCII commands, allowing the host controller (PLC, PC, or SCADA system) to read input states or set output values.
- The module’s internal microcontroller manages data acquisition, signal conditioning, and communication timing to ensure accurate and synchronized operation.
Use Cases and Applications:
- Industrial automation and process control
- Building management systems (BMS)
- Remote monitoring and telemetry
- Machine control and equipment interfacing
- Energy management and environmental monitoring
- Distributed I/O expansion for PLCs and embedded controllers
- Integration with SCADA systems for real-time data acquisition
Compatibility:
- Compatible with standard RS485 networks and ASCII-based communication protocols
- Works with most industrial controllers, PLCs, and SCADA software supporting serial communication
- Can be integrated into Modbus or custom ASCII command frameworks
5. Components & Accessories
Included Items:
- C1702 Digital I/O Isolated Module
- Terminal block connectors for power, I/O, and communication lines
- Quick-start guide or installation leaflet
- Mounting clips for DIN-rail installation
Optional Accessories:
- RS485 to USB or RS485 to Ethernet converters for PC connectivity
- Shielded twisted-pair communication cables
- External power supply (24 VDC regulated)
- Relay expansion boards (if outputs are transistor type)
- Protective enclosures for outdoor or harsh environments
Connectors:
- Power Connector: 2-pin terminal block (V+, GND)
- RS485 Connector: 2-pin terminal block (A, B)
- Digital I/O Connectors: Multi-pin terminal blocks for input and output channels
6. Installation & Setup
Requirements:
- 24 VDC regulated power supply
- RS485 communication line (twisted pair, shielded cable recommended)
- Proper grounding and shielding for noise reduction
Mounting Options:
- DIN-rail mounting (standard 35 mm rail)
- Panel mounting using screws or brackets
Configuration Steps:
1. Mount the module securely on the DIN rail or panel.
2. Connect the power supply to the designated terminals.
3. Wire digital input and output devices to the corresponding terminals.
4. Connect the RS485 communication lines (A, B) to the network bus.
5. Set the module address and communication parameters (baud rate, parity, stop bits) using DIP switches or software configuration commands.
6. Verify communication with the host system using ASCII commands or diagnostic tools.
7. Test input and output functionality before integrating into the control system.
Installation Notes:
- Maintain proper cable separation between power and signal lines.
- Use termination resistors (typically 120 Ω) at both ends of the RS485 bus.
- Ensure all devices on the RS485 network share a common ground reference.
7. Performance & Capabilities
Speed and Communication:
- Supports baud rates up to 115.2 kbps, enabling fast data exchange in multi-node networks.
- ASCII command structure ensures low overhead and easy debugging.
Capacity:
- Handles multiple digital input and output channels simultaneously.
- Supports up to 255 addressable nodes on a single RS485 bus, depending on network configuration.
Efficiency:
- Low power consumption design suitable for continuous operation.
- High isolation minimizes signal degradation and ensures stable performance under electrical stress.
Response Time:
- Typical input-to-output response time < 10 ms, depending on baud rate and network load.
Limitations:
- Limited to digital (binary) signal processing; analog signals require separate modules.
- RS485 communication distance limited to approximately 1200 meters (4000 feet) depending on cable quality and baud rate.
- Requires proper termination and biasing for reliable communication.
8. Standards & Compliance
Electrical and Safety Standards:
- Designed in accordance with IEC 61010-1 (Safety requirements for electrical equipment for measurement, control, and laboratory use)
- EMC compliance per EN 61000-6-2 (Immunity for industrial environments) and EN 61000-6-4 (Emission standard for industrial environments)
- RoHS compliant (Restriction of Hazardous Substances Directive)
- CE marked for conformity with European safety and EMC directives
Communication Standards:
- RS485 (EIA/TIA-485-A) compliant
- ASCII serial communication protocol
Environmental Compliance:
- Meets industrial temperature and humidity specifications
- Designed for installation in control cabinets or protected enclosures
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 12–24 months) covering defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation, wiring diagrams, and communication protocol guides available from manufacturer or distributor.
- Firmware updates and configuration utilities may be provided for enhanced functionality.
- Customer support via email, phone, or online service portal.
Maintenance:
- Minimal maintenance required; periodic inspection of wiring and terminal connections recommended.
- Ensure ventilation and avoid exposure to excessive dust or moisture.
- Firmware or configuration updates can be performed via RS485 interface if supported.
Updates and Lifecycle:
- Part of a modular product line with ongoing support and compatibility with newer communication standards.
- Backward-compatible with existing RS485-based control systems.
- Designed for long-term availability and integration into industrial automation infrastructures.
Summary
The C1702 Digital I/O Isolated Module (RS485) is a versatile, industrial-grade data acquisition and control device engineered for reliable digital signal interfacing in distributed automation systems. With its isolated I/O channels, robust RS485 communication, and ASCII-based command structure, it provides a simple yet powerful solution for integrating sensors, actuators, and control logic across industrial networks. Its modular design, electrical protection, and compliance with international standards make it ideal for applications in manufacturing, process control, building automation, and remote monitoring.
This module exemplifies durability, flexibility, and ease of integration—key attributes for modern industrial communication and control environments.
Product Name: Digital I/O Module, Isolated, RS485 Communication
Model: C1702
Series: C1700 Series – Industrial Data Acquisition and Communication Modules
Article Number: C1702
Manufacturer: [Manufacturer not specified – typically used in industrial automation and control systems]
The C1702 Digital I/O Isolated Module (RS485) is a compact, high-performance data acquisition and control device designed for industrial environments requiring reliable, isolated digital input and output communication over an RS485 interface. It is part of a modular family of industrial I/O modules optimized for distributed control, monitoring, and data collection applications. The C1702 provides robust electrical isolation, ensuring signal integrity and protection against electrical noise, surges, and ground loops commonly found in industrial automation systems.
2. Key Features
- Isolated Digital I/O: Provides galvanic isolation between input/output channels and communication interface, protecting connected equipment and ensuring signal reliability.
- RS485 Communication Interface: Supports half-duplex serial communication using the RS485 standard, allowing long-distance data transmission and multi-drop network configurations.
- ASCII Protocol Support: Communicates using a simple ASCII-based command set, enabling easy integration with PLCs, SCADA systems, and industrial PCs without complex protocol stacks.
- Modular Design: Compact form factor suitable for DIN-rail or panel mounting, allowing flexible deployment in distributed control architectures.
- Industrial-Grade Reliability: Designed for harsh environments with robust electrical protection, extended temperature tolerance, and durable housing materials.
- Flexible Digital I/O Configuration: Supports multiple digital input and output channels for monitoring sensors, switches, and controlling actuators or relays.
- Noise Immunity and Signal Integrity: High isolation voltage and filtering ensure stable operation in electrically noisy industrial settings.
- Scalable Network Integration: Multiple C1702 modules can be connected on a single RS485 bus, supporting multi-node communication and distributed I/O expansion.
- Low Power Consumption: Optimized for energy-efficient operation in continuous industrial processes.
3. Technical Specifications
*(Note: Some values are inferred based on typical industrial RS485 I/O modules; actual specifications should be verified with manufacturer documentation.)*
- Model: C1702
- Article Number: C1702
- Type: Digital I/O Module, Isolated, RS485 Communication
- Communication Interface: RS485 (2-wire, half-duplex)
- Protocol: ASCII-based serial communication
- Isolation Voltage: Typically 1500–2500 VDC between I/O and communication interface
- Digital Inputs: 8–16 channels (typical), optically isolated
- Digital Outputs: 8–16 channels (typical), transistor or relay type, isolated
- Input Voltage Range: 0–30 VDC (typical logic level detection)
- Output Voltage Range: 5–30 VDC (depending on output type)
- Output Current: Up to 500 mA per channel (transistor output) or 2 A (relay output)
- Communication Speed: 1200–115200 bps (baud rate configurable)
- Address Range: 1–255 (node addressing for multi-drop RS485 networks)
- Power Supply: 10–30 VDC (nominal 24 VDC)
- Power Consumption: < 3 W typical
- Isolation Type: Optical and galvanic isolation between channels and communication bus
- Operating Temperature: -20 °C to +60 °C
- Storage Temperature: -40 °C to +85 °C
- Humidity: 10–90% RH, non-condensing
- Dimensions: Approx. 100 mm (H) × 70 mm (W) × 25 mm (D)
- Weight: Approx. 150–250 g
- Mounting: DIN-rail or panel mount
- Material: Industrial-grade ABS or polycarbonate enclosure
- Protection Class: IP20 (typical for control cabinet installation)
4. Functionality
The C1702 Digital I/O Isolated Module functions as a remote data acquisition and control interface that connects field-level digital signals to supervisory control systems via RS485 communication.
Working Principle:
- The module receives digital input signals from sensors, switches, or other binary devices. Each input channel is optically isolated to prevent electrical interference and protect the communication bus.
- Digital output channels can drive actuators, relays, or indicator lights based on commands received from the host system.
- Communication occurs over an RS485 serial bus using ASCII commands, allowing the host controller (PLC, PC, or SCADA system) to read input states or set output values.
- The module’s internal microcontroller manages data acquisition, signal conditioning, and communication timing to ensure accurate and synchronized operation.
Use Cases and Applications:
- Industrial automation and process control
- Building management systems (BMS)
- Remote monitoring and telemetry
- Machine control and equipment interfacing
- Energy management and environmental monitoring
- Distributed I/O expansion for PLCs and embedded controllers
- Integration with SCADA systems for real-time data acquisition
Compatibility:
- Compatible with standard RS485 networks and ASCII-based communication protocols
- Works with most industrial controllers, PLCs, and SCADA software supporting serial communication
- Can be integrated into Modbus or custom ASCII command frameworks
5. Components & Accessories
Included Items:
- C1702 Digital I/O Isolated Module
- Terminal block connectors for power, I/O, and communication lines
- Quick-start guide or installation leaflet
- Mounting clips for DIN-rail installation
Optional Accessories:
- RS485 to USB or RS485 to Ethernet converters for PC connectivity
- Shielded twisted-pair communication cables
- External power supply (24 VDC regulated)
- Relay expansion boards (if outputs are transistor type)
- Protective enclosures for outdoor or harsh environments
Connectors:
- Power Connector: 2-pin terminal block (V+, GND)
- RS485 Connector: 2-pin terminal block (A, B)
- Digital I/O Connectors: Multi-pin terminal blocks for input and output channels
6. Installation & Setup
Requirements:
- 24 VDC regulated power supply
- RS485 communication line (twisted pair, shielded cable recommended)
- Proper grounding and shielding for noise reduction
Mounting Options:
- DIN-rail mounting (standard 35 mm rail)
- Panel mounting using screws or brackets
Configuration Steps:
1. Mount the module securely on the DIN rail or panel.
2. Connect the power supply to the designated terminals.
3. Wire digital input and output devices to the corresponding terminals.
4. Connect the RS485 communication lines (A, B) to the network bus.
5. Set the module address and communication parameters (baud rate, parity, stop bits) using DIP switches or software configuration commands.
6. Verify communication with the host system using ASCII commands or diagnostic tools.
7. Test input and output functionality before integrating into the control system.
Installation Notes:
- Maintain proper cable separation between power and signal lines.
- Use termination resistors (typically 120 Ω) at both ends of the RS485 bus.
- Ensure all devices on the RS485 network share a common ground reference.
7. Performance & Capabilities
Speed and Communication:
- Supports baud rates up to 115.2 kbps, enabling fast data exchange in multi-node networks.
- ASCII command structure ensures low overhead and easy debugging.
Capacity:
- Handles multiple digital input and output channels simultaneously.
- Supports up to 255 addressable nodes on a single RS485 bus, depending on network configuration.
Efficiency:
- Low power consumption design suitable for continuous operation.
- High isolation minimizes signal degradation and ensures stable performance under electrical stress.
Response Time:
- Typical input-to-output response time < 10 ms, depending on baud rate and network load.
Limitations:
- Limited to digital (binary) signal processing; analog signals require separate modules.
- RS485 communication distance limited to approximately 1200 meters (4000 feet) depending on cable quality and baud rate.
- Requires proper termination and biasing for reliable communication.
8. Standards & Compliance
Electrical and Safety Standards:
- Designed in accordance with IEC 61010-1 (Safety requirements for electrical equipment for measurement, control, and laboratory use)
- EMC compliance per EN 61000-6-2 (Immunity for industrial environments) and EN 61000-6-4 (Emission standard for industrial environments)
- RoHS compliant (Restriction of Hazardous Substances Directive)
- CE marked for conformity with European safety and EMC directives
Communication Standards:
- RS485 (EIA/TIA-485-A) compliant
- ASCII serial communication protocol
Environmental Compliance:
- Meets industrial temperature and humidity specifications
- Designed for installation in control cabinets or protected enclosures
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 12–24 months) covering defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation, wiring diagrams, and communication protocol guides available from manufacturer or distributor.
- Firmware updates and configuration utilities may be provided for enhanced functionality.
- Customer support via email, phone, or online service portal.
Maintenance:
- Minimal maintenance required; periodic inspection of wiring and terminal connections recommended.
- Ensure ventilation and avoid exposure to excessive dust or moisture.
- Firmware or configuration updates can be performed via RS485 interface if supported.
Updates and Lifecycle:
- Part of a modular product line with ongoing support and compatibility with newer communication standards.
- Backward-compatible with existing RS485-based control systems.
- Designed for long-term availability and integration into industrial automation infrastructures.
Summary
The C1702 Digital I/O Isolated Module (RS485) is a versatile, industrial-grade data acquisition and control device engineered for reliable digital signal interfacing in distributed automation systems. With its isolated I/O channels, robust RS485 communication, and ASCII-based command structure, it provides a simple yet powerful solution for integrating sensors, actuators, and control logic across industrial networks. Its modular design, electrical protection, and compliance with international standards make it ideal for applications in manufacturing, process control, building automation, and remote monitoring.
This module exemplifies durability, flexibility, and ease of integration—key attributes for modern industrial communication and control environments.
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