INICT01 ABB via the I/O expander bus

This note explains the fea- characteristics, specifications, and operation of INFI-NET’s interface with computers.

It also includes installa- operations and troubleshooting procedures for each module
INICT01 Internet to Computer Transfer Module (ICT) pro provides the electronic device Internet to computer interface

required to guide operations. It handles all com- communication via RS-232-C serial communication with the upper

computer communication port (one or two) and direct communication with the NIS module through the I/O expander bus.

The ICT module consists of two printed circuit boards. One loop – the circuit board is the memory board, while the other

is the central processing unit. These boards contain serial communication ICT modules with computer circuits required for

communication. The ICT module occupies two installation unit slots adjacent to the NIS module.

The INNIS01 module is a co-working I/O module that connects to other INFI-NET communication modules. This allows a

node to communicate with any other node on the Inf-Net loop. The NIS module is a slot in a separate PCB module mounting

unit. The board contains microprocessor-based communication circuits that enable it to communicate with other INFI-NET

interface modules. All Internet to computer interfaces require a specific one or more communication modules and NIS modules.
Two locking screws on the panel secure the INNIS01 module to the module mounting unit. There are 16 leds on the panel – signs

that display error codes and event/error counts. The INNIS01 module has three card edge connectors for external signals, nal

and power(connect P1, P2 and P3). Connector P1 Connector – Connects to public ground and +5 VDC power supplies. Connector

P2 connects NIS modules to the I/O expander bus for communication -cate has a control module inside its node. Serial communication

to other nodes is via connector P3 using a cable connected to the terminal unit or terminal module. Communication nodes are

connected by coaxial or biaxial cables connecting terminal units or modules on each node.