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Professional Automation Computer Crestron PAC2
available via Crestron’s single-port C2ENET-1 and dual-port C2ENET-2 Ethernet
cards.
The PAC2 offers eight programmable analog and digital inputs as well as digital
outputs. There are eight normally open relays, isolated with MOV suppression.
The 32 Cresnet connectors that comprise the built-in 8-segment Cresnet hub are
located on the top of the PAC2 (NET A – NET H). When powered by the internal
supply or an external power supply, they expand the number of Cresnet devices that
can be connected to the PAC2. Each group of four connectors can electrically
support up to 32 Cresnet devices. When powered by the internal power supply, there
is a maximum of 50 watts (DC) available for all network devices connected to the
PAC2. The LEDs indicate communication on the Cresnet link.
The PAC2 provides external connections for both a back-up processor and
emergency over-ride closure signals. In the absence of Cresnet, a signal is generated
to switch power and communication of the Cresnet system to the back-up processor.
When the over-ride connection receives a contact closure, a signal is passed to the
lighting modules via the fifth wire of the interconnect cable, and the lights are turned
on to a programmed preset emergency level. They remain at this level until that
contact closure is removed.
For detailed information on the PAC2 input and output ports/connectors, refer to
“Ports/Connectors” on page 7.
The 2-Series operating system is vastly upgraded, yet compatible with existing
Crestron software and programming. A key feature is the new Crestron Compiler,
which allows any existing Crestron SIMPL™ Windows
control program to be
recompiled for the 2-Series. The real-time, preemptive multi-tasking/multi-threaded
operating system offers a FAT32 file system with long file names. The enhanced
SIMPL+™ instruction set is also fully compatible with existing Crestron SIMPL
Windows and SIMPL+ programs.
The PAC2 also provides true secure network communications, which is required for
today's corporate networks, automated residence systems, and the Internet. The Dual
Port 10/100 BaseT Ethernet card (C2ENET-2) will support dynamic and static IP
addressing and full duplex TCP/IP and UDP/IP. It offers a WAN port for Internet
and remote-location communications and a LAN port for local in-home use. A built-
in firewall delivers network security with the Network Address Translator (NAT)
and router functions. The built-in Web Server uses memory storage on a compact
flash card for remote access and control.
Network Address Translation (NAT), available with the C2ENET-2 card, is a
method of connecting multiple computers on an internal network to the Internet (or
any other IP network) using one publicly visible IP address. Current implementation
for the Crestron 2-Series control systems includes a combination of the Network
Address Port Translator protocol (NAPT) and Bi-Directional NAT. NAT
functionality is included in the firmware of Crestron 2-Series control processors, and
enabled through a dual port Ethernet Z-bus expansion card such as the C2ENET-2.
NOTE: For specific details on NAT, including setup and configuration, refer to the
Network Address Translator (NAT) document (latest version of Doc. 6001). It is
available from the Downloads | Product Manuals section of the Crestron website
(www.crestron.com
).
2 • Professional Automation Computer: PAC2 Operations Guide – Doc. 5941