CSI 7798 I/SITE LAN, Руководство по установке

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Installation Guide Physical Description
7798 I/SITE LAN 5
✦
An asynchronous serial port (P3). This port provides access to an external PC,
external serial printer, or external asynchronous modem. When connecting a
modem to port P3, use CSI cable CBL074 (P/N 606105–0038). Use CSI cable
CBL072 (P/N 606105–0036) for DE-9, and CBL073 (P/N 606105–0037) for DB-25
connections to PC COM ports. CSI cable CBL081 (P/N 606105–0051) is used for
connection of serial printers.
✦
An expansion port (P2) provides serial communication with an optional controller
LAN expansion board. If the expansion board is installed, the I/SITE LAN can be
used as a peripheral controller for an I/NET system. (Refer to
“Expansion Module”
on page 23 .)
The I/SITE LAN can emulate one of four CSI Taps: 7801, 7810, 78061, and 78035. Tap
emulation is controlled by the settings manually entered through the ViewCon and by
the type of devices connected to the unit. Refer to “Tap Emulation” on page 22.
Communication Expansion Port
The communication expansion port (P2) provides connections to a CSI controller LAN
serial expansion board (RS485). The RS485 expansion board enables the I/SITE LAN to
be a peripheral controller for an I/NET system and still operate as a stand-alone unit. The
connector is in the upper-right corner of the controller (see
Figure 2 ).
Reset
Upon power loss/restoration, the I/SITE LAN executes an automatic reset memory test
of RAM and EPROM. The test uses an array of RAM test bytes and a Checksum check
on the EPROM. If the check is successful, control and execution is passed to
programmed memory.
Memory
The I/SITE LAN provides support for several types of memory with variable amounts of
each. The current memory organization is listed in
Table 1 .
NOVRAM
The 7798 I/SITE LAN provides 512 bytes of non-volatile RAM (NOVRAM) storage. This
memory holds all parameters necessary to establish basic communication with the
controllers after a long-term power outage in which battery-backed static RAM content
is lost (refer to “Battery Backup” on page 6).
When the I/SITE LAN is emulating a 78061 Tap, it can store telephone numbers as a stan-
dard 78061 Tap would. Up to eight telephone numbers of at least 25 digits can be stored
in NOVRAM. (Refer to “Specifications” on page 43.)
Table 1. I/SITE LAN Memory
Socket Amount Memory type
U1 and U2 256KB Static RAM (Stores download software and database.)
U3 32KB EPROM (Stores boot firmware.)