User Manual

PAC Portico 2200/1200 Series Installation Guide 15263 Ver 2.1 DRAFT E

2.3 CNC with Six Wire Bus - 128 doors

This system has a master CNC administered from a PC. Up to 32 door controllers, all configured as

slaves, are connected using the six wire bus. The CNC has an integral reader for key administration and

connects directly to the PC's serial port using the cable supplied. The administration software, besides

providing a much easier to use interface, also allows extra control of door controller relays and alarm

module inputs and outputs.

Figure 6 Single Site CNC System

For further information on administration, see the documentation supplied with the administration

software.

2.4 CNC with Multiple Sites - up to 128 Sites per CNC

This system has a master CNC for site 1 and a master door controller for each subsequent site. All sites

are administered from a PC or PCs. Up to 128 sites can be controlled. The first of these sites is the 128

door (32 door controllers) six wire bus described in Section 2.3. The other sites are connected using RS-

232 serial communication links.

There are 3 serial ports on the CNC, allowing up to 3 sites to be permanently connected. By using dial-up

(PSTN or LAN) modems more than one site can be attached to each port. Once or twice a day, the CNC

will dial-up each site, send updates and receive events.

Note

If using PAC Portico for Windows, the first 32 serial sites may have up to 8 connected door

controllers on each site, the remaining 95 sites may have just one door controller. If using PAC

Portico Prism, all 127 RS-232 sites can have 8 controllers.

Each site will consist of at least one master door controller with up to 7 slave door controllers attached

using the six wire bus giving a maximum of 32 doors per site.

When using dial-up links, it is possible to set the master door controller to dial-back to the CNC in the

event of an alarm. Normally all communications are made by the CNC dialing out to each site.

An alternative arrangement may be used when it is not possible to connect the door controllers at the

remote site via the six wire bus. This system involves using a Code Operated Switch (COS), available in 4

and 8 port versions, to switch between door controllers. In this case, each door controller is set up as a

slave.

Notes

1. Use of a dataswitch does not allow dial-back.

2. A mixed system is possible but different series controllers must not be mixed on the same

cluster.