Instruction manual

Instruction Manual
760006-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Description and Specifications 1-21
Model NGA 2000 Platform
c. Additional I/O Modules
There are several additional I/O options
available. These include the SIO board,
the DIO board, and the LON I/O board.
The SIO is described in its own section of
this manual. It can provide up to 8 chan-
nels of analog output at once. It can also
provide an RS-232 or RS-485 digital link.
The DIO can provide up to 24 channels of
discrete digital signals via pull-down tran-
sistors. It can provide specific alarm indi-
cation for V2.3 or later Analyzer modules.
It cannot work with V2.2 Analyzers or
earlier than V3.3 Platforms.
The LON I/O board provides two LON
connections, as well as ventilation holes
for the Platform. The LON connections
are paralleled. They allow the internal
LON of the Platform to be connected to
external Analyzers.