Moxa ioLogik W5312-T [111/194] Active opc server with a static ip address

ioLogik W5300 Planning and Assistance

5-3

Known Issue 4: Large Power Consumption when Attached to Base Stations

There will be a peak power usage when attaching to base stations (900 mA @ 12 VDC). Although the ioLogik

uses a low amount of power during normal usage (3-4 watts), we still recommend using a power supply that

is greater than 5 watts.

Active OPC Server with a Static IP Address

Configuring an ioLogik W5300 for use with an Active OPC host using a static IP address will ensure that the

ioLogik W5300 works properly in any of the following environments:

1. Virtual Private Network

A VPN (Virtual Private Network) is a service that groups all related devices into one network, but users need

to purchase cellular on-line services and apply for VPN membership. When the Cellular device dials up, it

will get a private static IP assigned by the telecom service provider (Carrier or MVNO). The private IP is on

the same network segment as the host. The host and devices can communicate bi-directionally using a

polling architecture. Most telecom service providers will not offer small volume service packages to

enterprise clients. A mobile virtual network operator (MVNO) is a company that provides cellular services

but does not have its own licensed frequency allocation of the radio spectrum, and does not necessarily

have the infrastructure needed to provide mobile telephone services. An MVNO subscribes to several

cellular services and then rents the services out to customers who only need a small quantity of IP service.

Normally, the MVNO also builds up a VPN server to separate their groups, and in effect provide the same

services provided by a VPN.

2. Network with Public Static IP Devices

A Public Static IP can be accessed anywhere and anytime, such as over the Internet. Although most carriers

use private dynamic IPs for mobile phones, some carriers will provide Public Static IPs for specific

applications. The downside of Public Static IP service is that it comes at a much higher price. Some telecom

service providers can assign a fixed IP to one specific SIM card. While all I/O devices have their own fixed

IP address, the entire system will run as a traditional monitoring system with physical wires. This solution

has the benefit exhibiting the same behavior as a wired solution. However, not all telecom service providers

offer this kind of service, and those that do offer it at a relatively high cost.

3. New Cellular Network with Active Architecture

A new type of cellular network based on push technology is now available. This type of service requires a

host PC with a public static IP, allowing all remote cellular devices to connect to the host PC, regardless of

whether or not the device has a public or private IP. The Active OPC Server software running on a PC with

a static IP is required to update the devices’ IP and the fixed device name. After connecting to the cellular

network, all operations can follow the original infrastructure of the mobile phone provider. Moxa’s ioLogik

W5000 series cellular remote I/O units are based on push technology with Active OPC Server. Active OPC

Server, which runs on a PC with static IP, will receive and register the device’s IP and create a connection

while the ioLogik W5300 is on line. Once the connection has been created, bi-directional communication can

ensue. The built-in front-end intelligence, Click&Go logic, enables the ioLogik to report its I/O status, alarms,

and log data actively.