Chapter
2
21
Introducing the 1779KFM Interface
This chapter gives you an overview of the 1779-KFM interface, its
function, its application in a communication network, and the type of
messages it can send and receive.
A 1779-KFM interface is a stand-alone unit which consists of:
One Stationary Frame
One Removable Frame
One Power-Supply Board (Cat. No. 1779-PH2)
One Host Board (Cat. No. 1779-JFM)
One Media Access Control Board (Cat. No. 1779-JMA)
A redundant 1779-KFMR interface has a Redundant Media Access
Control Board (Cat. No. 1779-JMAR) instead of a Media Access Control
board.
The stationary frame mounts on a back panel (Figure 2.1). The removable
frame fastens to the stationary frame.
The removable frame assembly contains the power-supply board, the host
board, and the Media Access Control (MAC) board. A shield separates
the power-supply board from the host board and the MAC board
(Figure 2.2).
Chapter Objectives
What Is the 1779KFM Interface?