ABB INIIT03 Transfer Module

INIIT03 INFI-NET to INFI-NET Transfer Module

The INIIT03 INFI-NET to INFI-NET Transfer Module serves as

the link between two local INFI-NET communication loops. It

holds the node database and is responsible for transferring all

messages between loops. Messages include exception reports,

configuration data, control data and system status. This mod

ule communicates directly with the NIS module on each loop of

the interface.

The INIIT03 module consists of one printed circuit board that

occupies one slot in the module mounting unit. The circuit

board contains the circuitry necessary for it to pass communi

cation from the central communication loop to the satellite

communication loop.

Two captive latches on the INIIT03 module faceplate secure the

module in the module mounting unit. The faceplate contains

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

FEATURES

• INFI-NET provides a plantwide communication network.

INFI-NET time synchronizes the control process plantwide.

• Each node can operate independently of other INFI-NET

nodes. INFI-NET communication modules provide localized

start-up/shutdown on power failure without operator

intervention.

• Response time is fast. The ten-megabaud loop communica

tion rate gives timely information exchange.

• The INFI-NET interface modules handle four message

types: Broadcast, time synchronization, multicast and NIS

poll. All messages contain cyclic redundancy check codes

(CRC) and checksums to insure data integrity.