ABB INIIT12 INFI-NET Transfer Module

INIIT12 INFI-NET to INFI-NET Transfer 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 Ter

mination 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 OPEN

modules (P1 for power, P2 for I/O expander bus).

The INIIT12 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 INIIT12 module

can use a variety of means to link to the satellite INIIT12 mod

ule such as modems, microwave and transceivers. The INIIT12

module communicates directly with an NIS module through

the I/O expander bus.

The INIIT12 module is a single printed circuit board that occu

pies one slot in the module mounting unit, adjacent to its NIS

module. The circuit board contains the serial communication

circuitry necessary for it to communicate with another INIIT12 module.

Two captive latches on the INIIT12 faceplate secure the module

in the MMU card cage. The faceplate contains eight CPU LEDs,

a red/green status LED, and a stop/reset switch.

Interface termination is through a cable connection between

P3 of the INIIT12 module and an NTMP01 Multi-Function Pro

cessor Termination Unit or NIMP01 Multi-Function Processor

Termination Module. INIIT12 module power and I/O expander

bus connections follow the same connector assignments com

mon to most INFI 90 OPEN modules (P1 for power, P2 for I/O expander bus).