User Manual

A6V101018824_en--_c Siemens Industry, Inc.
Building Technologies Division
Installation Instructions
Model SNC
Serial Network Card for USB Application with Windows
OPERATION
The Model SNC from Siemens Industry, Inc. (as shown in Figure 1) is a USB-compliant network card
used with the Siemens Management Stations. The SNC allows the user to interface networked MXL
and/or XLS/Desigo Fire Safety Modular/Cerberus PRO Modular fire panels to Desigo CCs/Cerberus
DMS’ and/or NCCs on XNET.
The SNC can also provide an interface to WAN components of NCC, including the HUB-4 over HNET. On
the NCC, one SNC may be used for XNet, and one may be used for HNet connection to WAN
components.
On Desigo CC/Cerberus DMS, up to four SNC cards may be installed for support of multiple XNet
networks. Support for HNet connection to WAN components of Desigo CC/Cerberus DMS is not available
yet. The SNC provides a supervised RS-485 network connection. The SNC operates in both Class B and
Class X.
The module fits in any available PCI or PCI Express compliant slot. The card is NOT dependent on the
slot connection and the tab is only used for additional support. The tab can be scored off if connectivity
problems are encountered. The module comes pre-installed in Management Station computers.
Hardware installation instructions for the SNC, when it is not factory installed, can be found in the
Physical Installation section of this document.
Controls and Indicators
The LEDs are located above X1 and are, in top to bottom order. See Figure 1 for more details.
LED
Color
Description
NET OK
(DS2)
Green
Blinks to indicate network is
receiving data.
HOST OK
(DS1)
Green
Blinks to indicate data to
transmit.
CH A
(DS4)
Yellow
Blinks* to indicate individual
Channel A select.
CH B
(DS5)
Yellow
Blinks* to indicate individual
Channel B select.
* If LED is steady, indicates a Class X fault on that channel.

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