CTI Products MCN RCD System Overview - Manual (Page 15)

MCN System Manual Auxiliary Modules
CTI Products, Inc.
68-10833-120
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EXB modules are used when two multi-node MCN networks are separated by a
distance beyond the reach of conventional wired media (typically 4000 feet) and
need to be interconnected. This distance could be across a large building,
business campus, city, etc. This interconnection is accomplished using one EXB
module at each network site and a single voice-grade telephone circuit connecting
the two EXB modules. Additional networks can be added to this unified network
by simply adding an EXB module pair per network.
Optional handsets can be plugged into the EXB modules to allow simultaneous
voice and data between the two locations.
Typical uses include:
• Comparators located remotely plus multiple PC display positions at the
local site.
• Comparators at a local and remote site with PC displays at the local
and/or remote site.
• In general, any system that requires multiple MCN networks to be
connected over phone lines.
See section 9.6 for an example system.
4.3 Input/Output Control Module (IOB)
The IOB Module allows I/O devices (such as relays) to be connected to the MCN
network and controlled with a User Interface Module (such as a HIB), creating an
I/O control system.
The IOB module has four different operating modes:
1. 16 input and 16 output general purpose I/O lines
2. Two sets of 1 of 4 select outputs plus 24 input lines
3. One set of 1 of 4 select outputs plus 8 input/output lines plus 20 input
only lines
4. One set of 1 of 8 select output lines plus 24 input only lines