70M-OSW1 Grayhill, Inc, 70M-OSW1 Datasheet - Page 9

• Manufacturer Part Number: 70M-OSW1
• Description: Opendac I/o System Low Cost Remote I/o System
• Manufacturer: Grayhill, Inc

OpenDAC
APPLICATIONS
NETWORK INTERFACES
OpenDAC
FEATURES
• Each Unit Controls/Monitors up to
• Network up to 127 OpenDACs
• Communicate at Speeds
• Auto Baud Rate Detect
• 100% Profibus DP Compatible
• I/O Update Rates of 500 µSec per
• Diagnostic LEDs
• CE Certified
• DIN Rail Mount
32 Analog and/or Digital I/O using
OpenLine
per Host PC
Up to12 MB
(PTO Tested and Approved)
32 Digital and 1 mS per Analog
Module (2 Channels)
8
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com
Stand Alone Control
Local Control & I/O
®
Distributed I/O
®
Modules
Remote I/O
for Profibus
SCADA
RTU
OpenDAC
®
®
I/O System
GENERAL DESCRIPTION
The OpenDAC
is a remote slave that responds to Profibus DP
commands that it receives over the network.
The status and configuration of up to 32
OpenLine
stored and constantly refreshed.
OpenDAC
power up, the controller will read the ID of each
I/O module and build an internal database.
During the master configuration the controller
will compare this configuration with the stored
configuration. If there is a match, the master will
allow exchange of information to occur.
®
®
analog or digital I/O channels is
for Profibus is self-configuring. On
®
for Profibus network interface
PROFIBUS UNIT ON OPENDAC
Each OpenDAC
network will occupy 1 of 127 unique addresses.
Communication between the master and slave
devices takes place at baud rates from 50 KB to
12 MB. OpenDACs
baud rate, eliminating switch settings and
simplifying set up. Network traffic and controller
status can be monitored by status LEDs on the
controllers. Diagnostic information is routinely
exchanged between master and slave devices.
Each OpenDAC
watchdog timer that monitors communication
from the Profibus master. When the watchdog
is enabled and the slave does not receive a valid
Profibus message within 100 mS, the OpenDAC
will set all output values to zero. Should a valid
message be received, the timer is reset and
communication resumes.
®
SYSTEM
®
®
incorporates a communication
or third party device on the
®
automatically detect the
®