Specifications

Industrial Networking Solutions
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Industrial I/O >
Active OPC Server Lite
Seamlessly connect ioLogik to your SCADA system
Active OPC Server Lite
OPC DA 3.0 supported ›
Event-driven tag update ›
Save 80% on network bandwidth•
I/O response that’s 7 times • faster
Patented automatic tag generation
›
Firewall-friendly connection from remote ioLogik devices ›
Allows remote I/O to use dynamic IP•
Allows remote I/O to use private IP•
Download free from Moxa’s website
›
Introduction
Active OPC Server Lite is a software package provided by Moxa
that operates as an OPC driver for an HMI or SCADA system. It
offers seamless connection from Moxa’s ioLogik series products to
SCADA systems, including Wonderware, Citect, and iFix. Active OPC
Server Lite meets the latest standard of OPC DA 3.0, which allows
connections to various kinds of devices and host OPC machines.
Smart I/O Connection—Migrating from “Pull” to “Push”
I/O Response that’s 7 Times Faster and Provides 80% off Bandwidth Usage with Event-driven Tag Updates
General OPC servers typically use the “poll/response,” or so-called
“pull” architecture, to connect to Ethernet I/O devices, which involves
an HMI/SCADA system continuously sending out commands to
collect relevant data. Moxa’s Active OPC Server, with its non-polling
architecture, supports the standard OPC protocol, but also offers
active (or “push”) communication with Moxa’s ioLogik series of Active
Ethernet I/O products to HMI/SCADA systems, providing instant I/O
status reports.
Adding additional I/O channels will tend to bog down an HMI/SCADA
system’s operation, resulting in a longer response time , and high
network bandwidth occupation, all because of the traditional “pull”
architecture. Active tags created by Active OPC Server Lite and
ioLogik series products report the I/O status only when it changes.
This type of event-driven tag status update results in an I/O response
time that is 7 times faster than other OPC Server packages (using a
testing environment with 2,560 I/O channels). In a different test of
network bandwidth usage, Active OPC Server Lite and the ioLogik
caused an apparent 80% reduction in network traffic. The end result is
that I/O access is more precise, and the cost of communicating with
remote I/O devices is substantially lower, especially when the remote
site has limited bandwidth (e.g., satellite, microwave, and cellular
communication). At the same time, the CPU usage of the SCADA/
HMI system is also reduced by 35% with this innovative push-based
architecture, so that less maintenance effort and lower level hardware
devices can be implemented.
Critical Tests Say It BestCritical Tests Say It Best
Test 1: Network Traffic Comparison
This test used 32 ioLogik E2210 units with 640 DI/O points. As shown in the figure, Active Ethernet
I/O can save 80% on bandwidth consumption compared to passive Ethernet I/O.
Test 2: I/O Status Response Time
This test used 128 ioLogik E2210 units with 2,560 I/O points. As shown in the figure, the active
architecture is 7 times better than the passive architecture in response time when the I/O status
changes.
Reduce Bandwidth Consumption by 80%
Active Ethernet I/O
Passive Ethernet I/O
0 1 2 3 4 5
0 1 2 3 4 5 6 7
7 Times Faster
Active Ethernet I/O
Passive Ethernet I/O