Sealevel launches Ethernet-to-serial device servers

Sealevel Systems Inc. has expanded its SeaLink serial device drivers by introducing low-cost one-port and two-port models.

06/03/2004


Sealevel Systems Inc . has expanded its SeaLink serial device drivers by introducing low-cost one-port and two-port models. Offering RS-232, RS-422, and RS-485 communications, the company says that SeaLink devices are the easiest way to connect legacy serial devices directly to an Ethernet network.

Based on a powerful embedded microprocessor, SeaLink drivers can communicate at sustained rates up to 230 Kbps. RS-232 models implement all modem control signals for maximum compatibility with a variety of peripherals, and all SeaLink devices include a watchdog timer circuit for fault tolerance. Flexible table-mount or DIN rail-mounting options allow easy installation close to target I/O devices.

Sealevel adds that its SeaLink devices use industry-standard RFC 2217 TCP/IP protocol for maximizing compatibility with the widest range of applications and networked serial devices. Included software works under a variety of operating systems, including Windows 98/ME/NT/2000/XP and Linux. Standard serial operating calls are transparently redirected to the SeaLink, which operates as a virtual COM port, which not only guarantees compatibility with most serial devices, but also enables backward compatibility with existing code. Alternatively, a Raw Data Socket mode is supported, eliminating the need for a driver.

SeaLink products are available as multi-interface RS-232/422/485, RS-422/485, or RS-232 only. Standard operating temperature range is 0 °C to 70 °C and an extended temperature range of–40 °C to +85 °C is optional.

—Jim Montague, news editor, Control Engineering, jmontague@reedbusiness.com





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Additive manufacturing benefits; HMI and sensor tips; System integrator advice; Innovations from the industry
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Integrated mobility; Artificial intelligence; Predictive motion control; Sensors and control system inputs; Asset Management; Cybersecurity
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me