Omron CJ1W-SCU42 Serial high-speed Communication Unit
Serial high-speed communication unit, 1x RS-232C port + 1x RS-422/485 port, Protocol Macro, Host Link, 1:N NT Link, No protocol, Serial Gateway (CompoWay/F, MODBUS-RTU, MODBUS-ASCII, Host Link), MODBUS RTU Slave, up to 230 kbps.
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Key Features and Technical Specifications
The Omron CJ1W-SCU42 Serial Communications Unit is the perfect solution. This powerful unit adds two independent serial ports to your Omron PLC, enabling seamless, high-speed PLC communication.
| Specification | Details |
|---|---|
| Product Model | CJ1W-SCU42 |
| Manufacturer | Omron Corporation |
| Number of Ports | 2 independent serial ports |
| Port Type | RS-232C, using a 9-pin D-sub connector |
| Communication Modes | No-protocol, Host Link, NT Link (1:N mode), Serial Gateway |
| Mounting | Mounts to CPU rack or expansion rack of an Omron CJ-series PLC |
| Power Consumption | 330 mA at 5 VDC; 120 mA at 24 VDC |
| Compatible PLC Series | Omron Sysmac CJ1, CJ2 |
Expand Your PLC's Reach with this Communication Unit
The core function of the Omron CJ1W-SCU42 is to expand your controller’s connectivity. In today’s factories, a central PLC needs to gather data from and send commands to a wide variety of external devices. Many of these devices, from simple sensors to complex vision systems, still rely on robust serial communication. This unit acts as a vital link, making that connection simple and reliable.
With this serial communications unit, you can integrate legacy equipment with a modern Omron control system, saving you the cost of a complete overhaul. The enhanced communication gives you more data, which leads to better control and higher efficiency in your automation setup.
High-Speed Serial Communication for Demanding Applications
The Omron CJ1W-SCU42 is built for speed. Each RS-232C port on this communication unit can operate independently, handling data-intensive tasks without putting a strain on your main CPU unit. This is crucial for applications that require real-time data exchange.
What this means for you is faster production cycles and more precise control. For example, you can connect a high-resolution barcode scanner and a label printer to the same PLC through this single unit. The high-speed data transfer ensures that there is no delay between scanning an item and printing its label.
Flexible Communication Modes for Any Serial Device
ne of the best features of this Omron serial unit is its flexibility. It supports several communication modes, making it one of the most versatile modules you can add to your Sysmac CJ1 series PLC. It allows you to define a custom protocol to communicate with virtually any serial device, even those with unique or non-standard communication requirements. You have full control over the data format.
This unit also supports standard Omron protocols like Host Link. This makes it incredibly easy to set up a network of Omron devices, like connecting your PLC to an Omron HMI or another controller.
Omron CJ1W-SCU42 Product Datasheet
Frequently Asked Questions
Yes, the CJ1W-SCU42 is fully compatible with both the Sysmac CJ1 series and the newer CJ2 series PLC systems. It mounts on the same backplane and integrates seamlessly with the CPU unit.
Absolutely. Both ports on this Omron unit are completely independent. You can run two different serial communications, even using different protocols or baud rates, simultaneously without any conflict.
No, the CJ1W-SCU42 draws its power directly from the PLC backplane. You do not need to wire a separate power supply, which simplifies installation on the DIN rail.
You can configure the CJ1W-SCU42 easily through your PLC program or using Omron’s configuration software. The settings are stored in the PLC’s memory capacity, making it easy to manage and back up your configuration.
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