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Specification & Description
| Specification | Description |
|---|---|
| Part Number | CJ1W-SCU31-V1 |
| Alternative Part Number | CJ1WSCU31V1 |
| Manufacturer | Omron |
| Category | PLC Systems |
| Ports | 2 RS-422A/485 ports |
| Voltage | 5 V |
| Current | 0.38 A @ 5 V |
| Weight | 110 g |
| Communication Mode | Full-duplex |
| Baud Rate | 1,200/2,400/4,800/9,600/19,200/38,400/57,600/115,200/230,400 bps (depending on configuration) |
| Communication Distance | RS-232C port: 15 m max; RS-422A/485 port: 500 m max |
| Mountable Units | Up to 16 Units on CPU Rack, no restrictions on mounting location |
| Current Consumption | 380 mA |
| Data Exchange | With CPU Unit via allocated 25 words in the CPU Bus Unit CIO Area |
| Protocol Support | Host Link, protocol macro, Serial Gateway, No-protocol, NT Link, Modbus-RTU Slave |
| Unit Version | 1.3 or later for Modbus-RTU Slave function |
The Omron CJ1W-SCU31-V1 is a versatile Serial Communications Module designed to facilitate high-speed connections with external devices in industrial automation systems. This module is part of the CJ-series and is engineered to enhance communication capabilities within a PLC system.
Equipped with two serial communication ports, the module supports both RS-422A/485 and RS-232C standards, allowing for flexible integration with a variety of equipment. Each port's communication mode can be independently configured, offering options such as Protocol Macro, Host Link, NT Link, Serial Gateway, and No-protocol modes to suit diverse application requirements.
The module's ability to support up to 230.4 kbps baud rate with the CJ1W-SCU@2 variant ensures swift data transfer rates, making it ideal for applications that demand rapid information exchange with high-speed external devices. Additionally, the unit's compatibility with the NT-AL001 RS-232C/RS-422A Link Adapter opens up the possibility for efficient 1:N communications.
Designed for scalability, the CJ1W-SCU31-V1 can be mounted alongside up to 16 CPU Bus Units on the CPU Rack or Expansion Racks, enabling the creation of systems with up to 32 serial communication ports. This level of expandability makes it a suitable choice for complex automation tasks that require multiple communication channels.
The Omron CJ1W-SCU31-V1 is a reliable and efficient solution for enhancing serial communication in industrial automation environments, offering both performance and flexibility to meet the demands of modern industrial applications.
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Frequently Asked Questions
What are the communication capabilities of the Omron Serial Communications Module?
The Omron Serial Communications Module offers two communication ports that can be set independently for different communication modes, including Protocol Macro, Host Link, NT Link, Serial Gateway, and No-protocol modes. It supports RS-232C and RS-422A/485 interfaces, allowing for versatile connections with various external devices.
Can I connect multiple devices using the Serial Communications Module?
Yes, you can connect multiple devices to the Serial Communications Module. Each unit provides two serial ports, and you can mount up to 16 units to a CPU Rack or Expansion Racks for a system with up to 32 serial communication ports.
Is it possible to achieve high-speed connections with this module?
Absolutely, the Serial Communications Module is designed to enable high-speed connections with external devices, with some models supporting baud rates up to 230.4 kbps and faster data transfer to the CPU Unit.
How do I connect a device that requires RS-422A communication to the RS-232C port?
You can connect a device that requires RS-422A communication to the RS-232C port by using an NT-AL001 RS-232C/RS-422A Link Adapter. This adapter facilitates the conversion and enables 1:N communications.
What kind of external devices can I connect to the Serial Communications Module?
The Serial Communications Module can connect to a wide range of general-purpose external devices, such as temperature controllers, smart sensors, programmable terminals, and host computers, among others.
Can I use the Serial Communications Module for Modbus-RTU communication?
Yes, the module supports Modbus-RTU communication, allowing it to function as a slave device in a Modbus-RTU network, typically with host computers acting as the master.
What is the maximum cable length supported by the Serial Communications Module for RS-422A/485 communication?
For RS-422A/485 communication, the maximum cable length supported by the module can reach up to 1,200 meters for multidrop connections, depending on the model.
How do I ensure that my system design is compatible with the Serial Communications Module?
To ensure system compatibility, you should refer to the module's specifications and ensure that your system design adheres to the communication standards and protocols supported by the module. Additionally, consider the module's current consumption and physical dimensions for proper integration.
What should I do if I need to connect the Serial Communications Module to a device with different communication protocols?
The module's Protocol Macro function allows you to create and register custom communication protocols to interface with devices that use different communication standards. This provides flexibility in system design and device integration.
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