Honeywell CNI2 - Serial Multiplexer & RS-485 Boards; CNI2 Board with RS-485 Board and Multiplexer Board

CNI2
O
perating and Installation
Guide
27
Serial Multiplexer & RS
-
485 Boards
It is possible to su
pport both the RS
-
232 serial data transfer and RS
-
485 transfer by switching
channels with the multiplexer board. An example of where this might be of value is when there
is a corrector that requires an RS
-
232 data link, and a pressure transducer that requi
res an RS
-
485 connection. Take note however that serial data exchange can take place only on a channel
at a given time.
CNI2 Board with RS
-
485 Board and
Multiplexer Board