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72-UM-OETH: 产品描述NETWORK INTERFACES OpenDAC㈢ for Ethernet; 文件大小440KB，共2页; 制造商Grayhill; 官网地址http://www.grayhill.com

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72-UM-OETH概述

NETWORK INTERFACES OpenDAC㈢ for Ethernet

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OpenDAC

I/O System

NETWORK INTERFACES

OpenDAC

for Ethernet

FEATURES

• Use Ethernet to Control/Monitor up

to 32 Analog and/or Digital I/O

Channels using OpenLine

I/O

Modules

• Network Multiple OpenDACs

• 10Base-T and 100Base-TX Support

• Extremely Fast Response Times

over Network

• Support Modbus/TCP Protocol

and HTTP

• Use Web Browser for Configuration,

Monitoring and Control of I/O

modules

• Diagnostic LEDs

• CE Certified

• DIN Rail Mounting

• Modbus TCP

ETHERNET UNIT ON OPENDAC® SYSTEM

APPLICATIONS

Stand Alone Control

Local Control & I/O

Remote I/O

Distributed I/O

SCADA

RTU

OpenDAC

I/O System

GENERAL DESCRIPTION

The OpenDAC

for Ethernet network inter-

face is a remote slave that responds to

Modbus/TCP commands that it receives over

the network. The status and configuration of

up to 32 OpenLine

analog or digital I/O chan-

nels is stored and constantly refreshed.

OpenDAC

for Ethernet is self-configuring. On

power up, the controller will identify the types

of I/O modules present. The unit will then con-

tinuously scan and update the digital and ana-

log modules. Digital input channels can be

setup for latching operation. The OpenDAC

for Ethernet supports the OpenLine

Smart

Module Protocol (SMP) that allows field cali-

bration and parameter setup of I/O modules.

Each OpenDAC

or third party device on the

network is assigned a unique IP address. There

are three methods of assigning the internet

protocol address -BOOTP, DHCP, and a static

method. The controller is shipped with the default

IP address of 128.0.0.1. The IP address can be

changed using a web browser. The web browser

can also be used to select BOOTP or DHCP to

assign the IP address. Communication data

rates are either 10 Mbps or 100 Mbps.

OpenDAC

automatically detects whether it is

connected to a 10Base-T or 100Base-TX

network, eliminating switch settings and

simplifying set up. Network and controller status

can be monitored by status LEDs.

Each OpenDAC

incorporates a communication

watchdog timer that monitors communication

from the Modbus/TCP master. When the

watchdog is enabled and the slave does not

receive a valid Modbus/TCP message within a

specified time, the OpenDAC

will set all output

modules to the stored fault-state values. Should

a valid message be received, the timer is reset

and communication resumes. All configuration

parameters are displayed and modified using a

web browser. The configuration parameters

are password protected to provide security

against unauthorized access.

ANALOG & DIGITAL I/O

MODULES

OpenDAC

for Ethernet connects directly to

one or two 16 channel racks. Any combination

of analog and digital I/O modules may be used.

On power up, the OpenDAC

scans and stores

the I/O configuration and makes the information

available to the master.

In addition to simple On/Off instructions, the

OpenDAC

allows you to:

• Read linearized thermocouple and RTD

temperature values

• Detect rising or falling edges

• Latch momentary input events

• Set the level of analog outputs

OpenDAC

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com

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72-UM-OETH

72-UM-OETH概述

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