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imo gsl-d24c plc smart i/o 20.4-28.8vdc
IMO GSL-D24C is a Modbus RTU Smart I/O module providing 32 NPN/PNP-compatible 24 V DC digital inputs with removable connectors for distributed industrial automation and machine control.
£269.22
Why Choose the IMO GSL-D24C Modbus Smart I/O Module?
The IMO GSL-D24C is a compact Modbus RTU Smart I/O digital input module designed for distributed industrial automation and machine control systems. It provides 32 digital DC inputs in a single remote I/O unit, allowing switches, proximity sensors, photoelectric sensors and other discrete field devices to be integrated with a compatible Modbus controller.
The GSL-D24C uses RS-422/RS-485 Modbus RTU communication and provides 32 NPN/PNP-compatible digital inputs. The inputs are designed for nominal 24 V DC industrial signals, making the module suitable for a wide range of machine sensors, switches and status contacts.
Unlike the fixed-terminal GSL-D24A variant, the GSL-D24C uses removable connectors, simplifying installation, commissioning and module replacement. With a 20.4–28.8 V DC module supply, compact dimensions and DIN rail mounting, it provides a practical high-density remote input solution for Modbus-based industrial automation.
Key Advantages
- Provides 32 digital inputs in a compact distributed Smart I/O module.
- Integrated Modbus RTU communication over RS-422/RS-485.
- Supports NPN and PNP input devices for flexible sensor integration.
- Designed for standard 24 V DC industrial input signals.
- Removable connectors simplify wiring, maintenance and module replacement.
- High-density remote I/O architecture can reduce extensive point-to-point wiring to the main control cabinet.
Key Features
- Modbus RTU Smart I/O module.
- 32 digital DC inputs.
- NPN / PNP-compatible inputs.
- Nominal 24 V DC input signals.
- RS-422/RS-485 serial communication.
- Modbus communications for integration with compatible controllers.
- 20.4–28.8 V DC module supply.
- Removable connector construction.
- Rotary switches for station number configuration.
- Communication status LEDs for transmit and receive activity.
- I/O LEDs for monitoring input states.
- DIN rail mounting for industrial control panels.
High-Density Digital Input for Modbus Automation
Distributed I/O allows industrial sensors and switches to connect to an I/O station located closer to the machinery they serve, with signal states transferred to the controller through an industrial communications network. The IMO GSL-D24C provides 32 digital inputs over Modbus RTU, making it particularly useful where a large number of discrete field signals must be collected efficiently.
The module's RS-422/RS-485 interface allows it to form part of a compatible serial Modbus network, while station addressing is configured using rotary switches. Its removable field connectors also allow the module to be disconnected or replaced without permanently disturbing the associated field wiring, supporting efficient maintenance of industrial control systems.
Typical Applications
- Modbus RTU distributed I/O systems.
- Industrial machinery and production equipment.
- Conveyor and material handling systems.
- Packaging and processing machinery.
- Limit switch and proximity sensor monitoring.
- Machine status and interlock monitoring.
- Factory automation and distributed control panels.
- 24 V DC discrete sensor interfacing.
Technical Specifications
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| Supported Protocols | Modbus RTU | |
|---|---|---|
| Device Type | Network Adapter / Remote I/O | |
| Communication | Modbus RTU | |
| Manufacturer | IMO Precision Controls | |
| Series | Smart I/O | |
| Model | GSL-D24C | |
| Product type | Modbus Smart I/O digital input module | |
| Communication protocol | Modbus RTU | |
| Communication interface | RS-422 / RS-485 | |
| Number of digital inputs | 32 | |
| Digital input type | DC, NPN / PNP compatible | |
| Nominal digital input voltage | 24 V DC | |
| Digital input operating range | approximately 19–28 V DC | |
| Module supply voltage | 20.4–28.8 V DC | |
| Connection type | Removable connector | |
| Station number setting | Rotary switches | |
| Station number range | 0–31 | |
| Status indication | Power, TX, RX and I/O LEDs | |
| Dimensions | approximately 176.6 × 50 × 39 mm | |
| Weight | approximately 240 g | |
| Mounting | DIN rail | |
| Installation type | Distributed Smart I/O | |
| HS Code | 8537109199 | |
| Country of Manufacture | South Korea |
Frequently Asked Questions
What is the IMO GSL-D24C used for?
The IMO GSL-D24C is a Modbus RTU distributed digital input module used to connect switches, sensors and other discrete 24 V DC field signals to compatible industrial automation systems.
How many inputs does the GSL-D24C provide?
The GSL-D24C provides 32 digital DC inputs in a single Smart I/O module.
What communication protocol does the GSL-D24C use?
The GSL-D24C uses Modbus RTU over an RS-422/RS-485 serial interface for communication with compatible industrial controllers.
Does the GSL-D24C support NPN and PNP sensors?
Yes. The module's 32 digital inputs are NPN/PNP compatible, allowing it to interface with a range of compatible 24 V DC industrial sensors and switching devices.
What is the difference between the GSL-D24C and GSL-D24A?
The key physical difference is the field connection arrangement. The GSL-D24C uses removable connectors, while the GSL-D24A is the fixed-terminal-block version. Both are 32-input Modbus Smart I/O modules.
Practical Modbus I/O for Industrial Control
The IMO GSL-D24C combines 32 NPN/PNP-compatible 24 V DC digital inputs with Modbus RTU communications and removable connectors, providing a compact high-density remote I/O solution for industrial machinery and automation systems.
