IC660ELB912G GE µGENI Network Interface Board

The IC660ELB912 is a µGENI Network Interface Board from GE Fanuc. It is designed to be a daughterboard

in a user’s microprocessor system. Users can interface the µGENI and the motherboard in any CPU-type device

capable of reading and writing to the general-purpose shared RAM on the µGENI. This device is known as the host.

Although the RAM interface is optimized for the IBM personal–computer bus, it is easy to adapt to various other CPU types.

 As it handles all data transfers between the host and the Genius I/O bus, the µGENI effectively frees up the host. This

allows the host to control remote I/O. It does this by using the features of the Genius I/O, such as high reliability and

noise immunity. Furthermore, the host can use the communication features of the Genius LAN to communicate with other hosts.

IC660ELB912G

In a sense, the µGENI is a general-purpose controller, maintaining initialization tasks and managing faults for over

30 other bus devices. Each device controls an I/O and the µGENI keeps updated images of each one. It is also capable of

communicating with other controllers through the use of Global Data, datagrams and Directed Control Data messages.

The µGENI has a range of intricate components on its single-printed circuit board.

It uses a 6303-serial interface microprocessor to write messages to the MIT chip. This chip manages the hardware interface to the

bus and provides support functions. For example, it handles error checking, LED drivers and a timer function.

A transmit/receive circuit works closely with the MIT and bus transmit and receive signals.