3expansion/isolation box user guide – ADLINK C485 User Manual
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• Expansion/Isolation Box User Guide
3
Expansion/Isolation Box User
Guide
3.1
Introduction
An APU is the kernel of a serial communication controller system. It can
manage up to 8 pieces of F641/F642 box. The APU communicates with the
MPU via dual port RAM and processes the data transfer between MPU and
I/O devices.
F641 box:
Interface:
RS-232
Controller:
FIFO type ST16C554 controller
Connector: 25 pin D -type male (8 ports per box)
F642 box:
Interface:
RS-422
Controller:
FIFO type ST16C554 controller
Connector: 25 pin D -type male (8 ports per box)
C584XB/C588XB is used to convert RS-232 input signal to isolated RS-232,
RS-422 or RS-485 interface. We support signal ground isolation system
between PC system and external application system. We have two models
to support four ports (C584XB) or eight ports (C588XB).