Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 - Manual (Page 31)

Chapter 2
Hardware Description
2-18
Adapter Boards – External control devices such as a PLC, discrete
operators devices, etc., are interfaced with the Main Control Board through
one of the two microbus ports, labeled PORT A (J7) and PORT B (J6) on
the Main Control Board. The microbus is a 60 line bus designed
specifically for the transfer of data between microprocessors. The
microbus is used on the Main Control Board to transfer data between
devices on the board. Additionally, hardware on the Main Control Board
allows data transfer between the microprocessor on the Main Control
Board and external devices through the two microbus Ports.
Information coming from external devices must be changed first to the
format required by the microbus before being input to the microbus Port.
The processing of data is accomplished through the use of the following
adapter boards:
Figure 2.15
Construction and Location of Adapter Boards
AB0445A
J2
J3
*
*
J1 J1
*
*