User Manual

Central Network Controller Installation Guide 15162 Ver 2.8 DRAFT E
© 2002 Blick USA, Inc. Page 15
3. Features
3.1 Dial-Up
The CNC can be programmed (through the PC administration software) to automatically dial any site that
communicates via PSTN modems or dial-up network devices.
3.2 Dial-Back
The CNC supports ‘dial-back’ from sites which communicate via PSTN modems or dial-up network
devices. In the event of an alarm (or certain other events), the door controller will immediately dial-back to
the CNC. See the documentation supplied with the door controller for full details on programming this
feature.
3.3 Communications Protection
This feature will prevent an unauthorized modem from establishing communications with a remote site. It
is done by the door controller checking the supervisor (master) token code sent by the CNC and
comparing it with its own code. If they do not match, the master code stored in the door controller is
compared against the previous master code stored in the CNC. If this also fails to match, the session is
aborted.
3.4 Site Types/Numbers
Each CNC will support up to 128 sites. The site configuration is determined by the administration software
being used to administer the system.
PAC Portico for Windows
• Site 1 is always the six wire bus - up to 32 door controllers
• Sites 2-33 are RS-232 sites - up to 8 door controllers each
• Sites 34-128 are RS-232 sites - 1 door controller ONLY each site.
This also means that only one six wire bus site, and a maximum of 32 RS-232 sites with more than one
door controller can be configured to communicate through each CNC.
As sites are added, the administration software will automatically assign a site number in the appropriate
‘range’. Furthermore, the administration software will not allow you to add more than one ‘six wire bus’
site, or more than 32 RS-232 sites with more than one door controller.
If the system consists of multiple ‘divisions’, it is possible for sites from more than one division to
communicate with the administration system via the same CNC. However, the above restrictions and
rules still apply - for example, you will not be able to have a six wire bus site in each of two divisions if you
only have a single CNC on your system.
PAC Portico Prism
• Site 1 is always the Six Wire Bus - up to 32 door controllers
• Sites 2-128 are RS-232 and can be any combination of single controller or controller cluster sites.