Specifications

Revision 2.4 WebRelay-Quad™ Users Manual
Section 1: Introduction
WebRelay-Quad™ is a compact, four-relay module with a built in web server. It can be controlled
and/or monitored over any IP network including private networks, IP-based industrial control
networks, and the Internet. Users can operate WebRelay-Quad™ using a web browser or a
custom application. Computers, PLCs, or automation controllers may control and monitor
WebRelay-Quad™ without user intervention. This works by sending text commands over the
network and reading XML status pages from WebRelay-Quad™, or by using Modbus/TCP
protocol.
WebRelay-Quad™ has many applications and is only limited by imagination. It works very well as
a stand-alone device that can be controlled using a web browser or as a convenient way to add
I/O to a computer. It can be used in industrial applications to control motors, lights, coils, pumps,
valves, etc.
1.1 Features
WebRelay-Quad™ is very simple but has many features. Some features include...
━ No programming required
━ Easy to use as a stand alone device or as part of a large control system
━ Built-in web server provides simple, web based configuration and control
━ Control page can be customized with appropriate text and buttons
━ 10/100 Ethernet connectivity
━ Four, 24Volt 1-Amp relays
━ Removable terminal connectors (included) simplifies wiring and service
━ Custom applications can control WebRelay-Quad™ with simple text commands and read XML
formatted status.
━ Modbus/TCP protocol support provides inter-interoperability with devices/software from other
manufacturers.
━ Password protection
━ Selectable TCP ports
━ On/Off or pulse mode
━ DIN-Rail or Wall Mount
1.2 WebRelay-Quad™ Models Available
WebRelay-Quad™ is currently available in three models. The only difference between the three
models is the power supply requirements.
Part Number Power Supply Requirements
X-WR-4R1-5 5VDC
X-WR-4R1-I 9-28VDC
X-WR-4R1-E Power Over Ethernet or 5VDC
Xytronix Research & Design, Inc. page 7