CONFIG_C

Appendix B - Adept DeviceNet

Multiple

NodeNode

Branching

Drop Line

Node

Node

Terminating

Resistor

Node

Node

Node

Multi-Port

Tap

Drop Line

Node

Tap

Node

Trunk Line

Multi-Port

Tap

Node

Drop Line

Terminating

Resistor

Node

Multiple Node

 

 

Daisy Chain

 

Node

Drop Line

 

 

 

 

Node

 

 

 

Zero Length Drop Line

Node

Node

Short Drop Lines (6m/20ft)

Figure B-1. Trunklines and Droplines Made of Thick and Thin Cable

DeviceNet allows devices to be powered directly from the bus, and devices can use the same cable to communicate with other devices on the bus. DeviceNet nodes are hot-plugable — you can remove or add components on the bus without powering down the network.

NOTE: This hot-plugable feature is not fully supported. If you add a new component to the network, you must make changes in the

program. Those changes are not active until you reboot the Adept SmartController.

The power distribution on the network/bus does not need to be in one place. The distribution of power supplies needs to be well planned since there are certain constraints on the power supply. In general, power supplies can be placed at any point in the network. The maximum current rating of a trunkline is 8 amps. DeviceNet allows opto-isolated, externally powered devices (e.g., AC drive starters and solenoid valves) to operate on the same bus cable. For detailed information see the DeviceNet Technical Specifications or the Cutler Hammer DeviceNet Installation Planning Guide. This document is available on the Internet at the following address:

http://cutlerhammer.eaton.com

from the menu item “DeviceNet Starter Kit”. The document is an Adobe Acrobat PDF file. Adobe provides a free download of the Acrobat Reader program on their web site:

http://www.adobe.com

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Nortech Systems RS-422/485, XUSR, RS-232/TERM, XSYS manual Adept SmartController User’s Guide, Rev. E
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RS-422/485, XSYS, XUSR, RS-232/TERM specifications

Nortech Systems offers a comprehensive suite of serial communication solutions, including RS-232/TERM, XUSR, XSYS, and RS-422/485 interfaces. These products are designed to facilitate reliable and high-speed data transmission in various industrial applications, making them essential for connecting devices in automation, telecommunications, and data acquisition systems.

The RS-232/TERM interface is a widely adopted standard for serial communication, known for its simplicity and robustness. It supports point-to-point communication over relatively short distances, typically up to 50 feet. Key features include a maximum baud rate of up to 115.2 kbps, error-checking capabilities, and a straightforward connection process, making it ideal for connecting peripheral devices like printers, modems, and barcode scanners.

Building on the RS-232 standard, the XUSR and XSYS devices offer enhanced functionalities and flexibility. XUSR, for instance, supports not just traditional RS-232 connections, but also protocol conversion for various serial interfaces, facilitating seamless integration of legacy systems with modern networking technologies. It is particularly useful in environments where multiple protocols need to be managed simultaneously.

XSYS is designed for more complex applications and supports advanced communication features such as multi-drop configurations, enabling it to connect multiple devices on a single bus. This makes it suitable for extensive industrial networks where space and wiring complexity need to be minimized. Synchronous and asynchronous data transfer modes ensure that the XSYS is adaptable for both real-time data collection and standard command-response applications.

On the other hand, RS-422/485 interfaces excel in long-distance communication, allowing for data transmission over distances up to 4,000 feet. They are designed for multi-point connections, supporting up to 32 devices on a single bus through differential signaling, which enhances noise immunity. These characteristics make RS-422/485 particularly well-suited for environments with electromagnetic interference, such as factories or subways.

Nortech Systems’ serial communication solutions emphasize reliability, ease of use, and versatility. With their commitment to high performance and user satisfaction, these interfaces provide critical connectivity in today’s increasingly automated and interconnected world. Whether in data centers, manufacturing setups, or remote sensor networks, Nortech's offerings stand out for their reliability, efficiency, and adaptability, ensuring effective data communication across diverse applications.
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