INTRODUCTION
MODULE DESCRIPTION
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I-E96-607A
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on the two communication loops is 45.8 meters (150 feet). Bidi-
rectional communication from the central communication loop
is through cable connection to the NTCL01 Communication
Termination Unit or NICL01 Communication Termination Mod-
ule.
This interface transfers system data, control and configuration
messages, and exception reports between two INFI-NET com-
munication networks. The INFI-NET to INFI-NET local interface
can support hardware redundancy.
MODULE DESCRIPTION
Network Interface Slave Module
The NIS module works in conjunction with the INFI-NET to
INFI-NET transfer modules. This allows any node to communi-
cate with any other node within the INFI-NET system.
The NIS module is a single printed circuit board that occupies
one slot in the module mounting unit (MMU). The circuit board
contains microprocessor based communication circuitry that
enables it to interface with the INFI-NET to INFI-NET transfer
modules via the I/O expander bus. Both the INFI-NET to
INFI-NET interfaces require a specific interface module and an
NIS module (the INIIL02 module requires two NIS modules).
Two captive latches on the front-mounted faceplate secure the
module to the MMU card cage. There are 16 LEDs on the face-
plate that display error codes or event/error counts.
Each NIS module connects to its INFI-NET communication loop
by a cable connected to an NTCL01 Communication Termina-
tion Unit or NICL01 Communication Termination Module.
Communication between nodes is through coax or twinax
cables that connect the termination units or modules on each
node. Power and I/O expander bus connections follow the same
connector assignments common to most INFI 90 modules (P1
for power, P2 for I/O expander bus).
INIIT02 INFI-NET to INFI-NET Transfer Module
The INIIT02 INFI-NET to INFI-NET Transfer Module supports
bidirectional communication through two RS-232-C ports. Port
one passes system data only. Port two passes system data or
can be used as a diagnostic port. The central INIIT02 module
can use a variety of means to link to the satellite INIIT02 mod-
ule such as modems, microwave and transceivers. The INIIT02
module communicates directly with an NIS module through the
I/O expander bus.
The INIIT02 module is a single printed circuit board that occu-
pies one slot in the module mounting unit, adjacent to its NIS