There are no reserved slots in a Quantum system, although it is recommended that
power supply modules are fitted in the extreme left slot, for optimum heat dissipation.
The only limits on the rack are the power available for the modules and the
addressing space. Any rack can be used in any of the three architectures supported
by the Quantum platform: Local I/O, remote I/O or distributed I/O.
In a Quantum system, module addressing and configuration is handled by the
software. No switches or other hardware components are used.
140XBP0pp00 racks comprise:
1 A metal frame
2 Connectors for module/rack connection
3 Tapped holes for fixing each module
4 Holes for fixing the rack
5 Earth terminals for earthing the rack
Rack expansion module
The 140XBE10000 rack expansion module enables I/O in an adjacent “secondary”
rack to communicate with the CPU or RIO drop in the “primary” rack via a specific
communication cable. An expansion module must be installed in each rack. The
extension cable provides all the signals necessary for data transmission between the
two racks. A single rack expansion module can be added to each rack.
The rack expansion module has the following flexible characteristics:
b The same 140XBE10000 rack expansion module is used for both “primary” and
“secondary” racks. A rack expansion system consists of two 140XBE10000 rack
expansion modules and one cable, available in 1, 2 or 3 m lengths.
b The system can use any Quantum power supply module. Each rack can have a
different type of power supply module.
b Loss of power in the “secondary” rack will not shut down the entire drop.
Only those modules located in the “secondary” rack will lose power.
b Rack expansion modules can be placed in any slot in the rack and do not
necessarily have to be placed in corresponding slots in the “primary” and
“secondary” racks.
b The rack expansion module is not recognized by the configuration software.
It will appear as an unfilled slot in the I/O map.
b All rack sizes are possible.
b The rack expansion module supports local I/O and remote I/O (31 drops).
b Expansion racks can take all discrete and analog I/O modules and also
high-speed counter modules.