System information

Crestron 2-Series Control Systems Reference Guide
Reference Guide – DOC. 6256A 2-Series Control Systems • 77
C2N-NPA8 Network Poll Accelerator
The Network Poll Accelerator (C2N-NPA8) is a device that maintains high data
throughput and low data latency via Cresnet when a large number of Cresnet devices
communicate with a single 2-Series control system. When connected to select
Crestron 2-Series control systems via a high speed serial or Ethernet connection, the
C2N-NPA8 can provide reliable, high-speed communications between the control
system and up to 252 Cresnet devices.
Placing a large number of Cresnet devices on a control system can slow down
polling time as each Cresnet device is polled sequentially by the control system. By
breaking down the Cresnet system into segments, multiple segments can be polled
simultaneously by the control system, hence improving response time.
Similarly, high-traffic devices such as touchpanels, camera controls, and other
devices require more network bandwidth as they transmit and receive larger amounts
of data. By placing these devices on their own segments, other segments can be used
for low-traffic devices such as wall keypads allowing Cresnet traffic to flow more
efficiently.
The C2N-NPA8 is typically recommended for networks with 20 or more devices
(not including button panels). Consult with Crestron's True Blue Support to
determine if a C2N-NPA8 would be beneficial to your system.
The C2N-NPA8 is comprised of 32 Cresnet connectors spread over eight segments
(NET A – NET H). These segments, along with the Cresnet port on the control
system allow the connection of up to 252 Cresnet devices.
For information on configuring a network with a C2N-NPA8, refer to the latest
revision of the C2N-NPA8 Operations Guide (Doc. 6087) which can be downloaded
from the Crestron website.
The C2N-NPA8 is compatible with several 2-Series control systems. However, not
all of the 2-Series products are compatible with the C2N-NPA8. The following table
lists 2-Series control systems (that are currently available as of this writing) that are
compatible with the C2N-NPA8 as well as the communication methods that can be
used.
Processor Compatibility
PROCESSOR SERIAL ETHERNET
AV2 YES
1
YES
3
C2N-DVP4DI NO YES
CNX-DVP4 NO YES
CP2 YES
2
NO
CP2E YES
2
YES
MC2E YES
2
YES
MC2W YES
2
NO
MP2 YES
2
NO
MP2E YES
2
YES
PAC2 NO YES
3
PRO2 YES
1
YES
3
QM-RMC NO NO
QM-RMCRX(-BA) NO NO
RACK2 NO YES
3