ABB INFI-NET Interface Modules

INTRODUCTION

INFI-NET is a unidirectional, high speed serial data highway

shared by all INFI 90® OPEN nodes. The INFI-NET to INFI-NET

interface modules provide sophisticated interfaces for data

exchange between nodes on an INFI-NET communication net

work. These network interface units use state-of-the-art INFI

90 OPEN modules.

INTENDED USER

Anyone who installs, operates or performs maintenance on the

INFI-NET to INFI-NET interfaces should read this manual

before placing an interface into service. Installation requires an

engineer or technician with experience handling electronic cir

cuitry and who is familiar with communication networks.

INTERFACE DESCRIPTION

The INFI-NET to INFI-NET interfaces are the INIIR01 INFI-NET

to INFI-NET Remote Interface and the INIIL02 INFI-NET to

INFI-NET Local Interface. The INNIS01 Network Interface Slave

Module is the front end of the INFI-NET to INFI-NET interfaces.

It is the intelligent link between a node and the INFI-NET loop.

The network interface slave (NIS) module and an INFI-NET to

INFI-NET transfer module create a specific node interface.

The INIIR01 INFI-NET to INFI-NET Remote Interface is made

up of the NIS module and the INIIT12 INFI-NET to INFI-NET

Transfer Module. This interface is a node on a central loop that

can communicate to an interface node on a remote satellite

loop (two interfaces are required, refer to Figure 1-1). Bidirec

tional communication from the central loop to the remote sat

ellite loop is through standard RS-232-C ports. The INFI-NET

to INFI-NET remote interface can support hardware redun

dancy. Refer to Appendix E for information on hardware

redundancy.

This interface transfers system data, control and configuration

messages, and exception reports between the central and

remote INFI-NET loops. Many of the operating characteristics

of the INIIT12 module are determined by specifications in the

INIIT12 executive block (function code 202). These specifica

tions are configurable to fit the needs of the application.