Basics

EasyAccess 2.0 access technology is quite different from traditional way of remote access method. Here are some notable points:

Traditional remote connection (blue links) EasyAccess 2.0 (green dotted links)
Connection traffic must pass through a number of firewalls, which means there are layers of network settings. PC and HMI both connect to a dedicated VPN server through which data are exchanged, or by P2P.
Network/Router setting is mandatory; therefore, coordination with the IT department is crucial. No additional network setting is required.
For one WAN IP, only one device can be connected. For one WAN IP, multiple devices can be connected.
For a device behind two or more routers, connection might not be possible. Being behind several routers does not affect EasyAccess 2.0 connectivity at all.

 


EasyAccess 2.0 Network Overview

Activation

While selected models come with built-in EasyAccess 2.0 license, most do not, and must be activated in order to use the feature. A purchased license can be used to activate any one of the supported models; however, once an HMI has been activated, its license cannot be transferred to another HMI.

Understanding Domain, HMI Group, and User

The basic management block is Domain, under which HMIs, HMI Groups, and Domain Users exist. An HMI, upon activation, can be added to a domain.

Activation: The first step towards using EasyAccess 2.0. Each HMI has its EasyAccess 2.0 feature disabled by default, and must be activated in order to use the feature. A purchased license can be used to activate any one of the supported models; however, once an HMI has been activated, its license cannot be transferred to another HMI.

Domain and Domain Admin: The basic block of HMI management. One Domain account may contain a number of Users, HMIs and HMI groups. However, each HMI can belong to only one Domain. The Domain Administrator manages all aspects the domain through the web-based portal at (https://account.ihmi.net). Domain Administrator account can also be used for logging in the EasyAccess 2.0 client program.

HMI Group: A subset of HMIs within a domain. A user in an HMI Group can access all HMI in that group. For the Domain Admin, HMI Groups provide an easy way for management of user access to HMI. An HMI can belong to more than one HMI groups.

User: A user holds the account used to login in to the EasyAccess 2.0 program. They are allowed access to HMIs for which it has direct association, and also HMIs within the group it is associated with. User’s relationship with HMIs and HMI Groups are managed by the Domain Admin.

The prime principle governing HMI management in EasyAccess 2.0:

An HMI can belong to one domain only at any given time

Example

Consider the following figure for an illustrative example of a domain.

  • In this example, the domain, named “MyDomain” has two users, Peter and Nina.
  • In this example, HMI are grouped together as Group I, Group II, Group III…etc, and one HMI belong to more than one groups. (HMI A)
  • Users can belong to many groups, and have access to the HMI in the groups they belong to. (User Peter & Group I)
  • Users can be directly associated with HMI and have access to them. (User Nina & HMI J)
  • Multiple users can access the same HMI, whether by assignment to groups (HMI A) or by direct association (HMI H).

All of this is done by the Domain Admin. The Domain Admin can exercise large amount of freedom in domain management.


A sample domain “MyDomain”