3.25. BC2240. Master Controller Module with USB, Ethernet and
RS232/RS422 port.
General description.
BC2000D system controller. You can insert two controllers in the same rack for redundancy
purposes so that, if the main controller fails, the other will take over the control of the system.
This board is inserted into the rear part of the BC2000DF rack.
Functional description.
The controller board is in charge of:
- managing the timing of the entire system, centralizing the synchronization sources.
- managing the power supply alarms generated in any of the boards, lighting the
“ALARM” LED if it detects a failure.
- managing the master/slave mode (when two controller boards are used).
- it supplies the entire rack with power when a BC2290 or BC2291 external power supply
is used.
- it includes a PC board with a real-time QNX operating system that is stored in a 512-Mb
Compact Flash memory. This flash memory contains both the operating system and the
configuration data.
- it allows you to record and play identification audio messages from PC board to/from
the system through an ISA interface.
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