Working with digital signatures – Echelon OpenLNS Commissioning Tool User Manual

Page 62

Advertising
background image

46

Getting Started

Registered or Not Registered or either of the category labels is
selected. If the Already Registered or Not Registered category label
is selected, all the plug-ins under the selected category label will be
disabled.

Remove

Removes a plug-in from the Pending list. This button is available
when a plug-in listed under Pending or the Pending category label is
selected. If the Pending category label is selected, all the plug-ins
under it will be removed.

Skip this Prompt when
Re-opening Drawing

Select this check box if you want the Network Wizard to skip the
Plug-In Registration page each time you open the OpenLNS CT
network. If the Show all Options check box under Existing
Networks
in the OpenLNS CT Design Manager General tab is
selected, the prompt will appear regardless if this option is selected.

Register all New
Plug-ins when
Re-opening this
Drawing

Select this check box if you want new plug-ins in the plug-in
directory to be automatically registered each time you open the
OpenLNS CT drawing.

New plug-ins must be registered with Windows. The installation
program for the plug-ins typically does this automatically. If you are
designing your own plug-ins see the OpenLNS Plug-in Framework
User’s Guide
for more information on how to create plug-ins and
register them with Windows.

Continue with
Advanced Options

Opens and lets you set options in the authentication, domain
definition, timing, and resource file language pages in the Network
Wizard. See

4

Recovering an OpenLNS CT Network in Chapter 7,

Maintaining Networks, for setting the options in these pages.

12. Click Finish to open your new OpenLNS CT drawing.

13. If you are creating or opening an OpenLNS CT network for the first time, a message opens

informing you that the drawing being opened contains macros from the Echelon Corporation, and
asking you if you would like to enable macros for this drawing. Verify that the macros were
signed by Echelon Corporation, and then enable macros, which is required for using OpenLNS
CT. Set Always Trust Macros from this Source to automatically enable macros for all
OpenLNS CT drawings that are signed by Echelon

Working with Digital Signatures

Visio drawings can have VBA code associated with them through the use of macros and ActiveX
objects. Visio drawings that use this capability use Microsoft VBA signatures to provide security from
VBA viruses. Each time you create an OpenLNS CT network design, the template that you selected in
the OpenLNS CT Design Manager (L

ON

W

ORKS

.vst by default) is used to create the network drawing.

This template uses VBA macros to implement the network drawing’s L

ON

W

ORKS

functionality. This

template and all Visio drawings created from it are signed by the Echelon Corporation.

Network drawings created with LonMaker releases before 3.1 will not have a digital signature.
Network drawings created with LonMaker Turbo Editions and LonMaker 3.1 or later may have
expired digital signatures. In addition, you can cause an OpenLNS CT drawing to lose its Echelon
signature by adding VBA code to it. This can happen if you add an ActiveX object or VBA code to
the OpenLNS CT drawing. Once a network drawing has lost its signature, it cannot get it back
automatically. If you have lost Echelon’s signature on a network drawing, you have three options: (1)
ignore the macro warnings as described in the next paragraph; (2) disable macro warnings as described
in the next paragraph; or (3) sign the drawing with your company’s digital signature as described at

http://office.microsoft.com/en-us/excel-help/digitally-sign-a-macro-project-HA001231781.aspx

.

Advertising