Karel DS200, Technical Reference And Installation Manual

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V.1.B. REDUNDANT CPU200 MODULE
Definition:
The redundant CPU200 module has structurally no difference compared to the CPU200
module; it is just an optional module that could be employed for backing up the CPU200 card
in the system against possible problems.
Technical Information:
In the systems with the redundant CPU200 module, two CPU200 cards are installed in the
main rack.
Thanks to an intelligent circuit on the BPL200-MAIN backplane, the system actually begins
using one of those CPU200s. In the mean time, the same intelligent circuit continuously
controls the actions of the active CPU200. On the other hand, in the event that any problem
with the CPU200 card occurs, which is actively being used, that intelligent circuit
automatically puts the redundant CPU200 card into operation and takes the problematic card
out of use. This operation takes place so fast that users would not even realize it.
Operational Information:
LED of the redundant CPU200 card continuously blinks, however its frequency is higher than
that of the LED corresponding to the normal CPU200 card. By this way, one can know which
one of the modules in the system is actually in use and which one is on standby.
Dimensions of CPU200 are 20 cm. x 22.5 cm. and it weighs 0.3 kg.
V.1.C. DS200 CPUKON CARD:
Definition:
The DS200 CPUKON CPU Connection Card constitutes the interface between the system
and the accessories. There are connectors on it in order to connect the accessories to the
system. DS200 CPUKON is present only in the main rack.
Technical Information:
The DS200 CPUKON CPU Connection Card is located in the main rack, without being
connected to the BPL200-MAIN backplane. The card is fixed to the front lower and upper
parts of the metal rack by the fixing latches on front card cover. It is connected to the
CPU200 card over a 26-pin flat cable (DS200 CPU-FC.)
Apart from being a bridge between the external peripherals and the system, a major job of
the CPUKON card is to preserve the license information of the system.
All the license information related to the system are preserved on a serial security plug –
called SGB – which resides on the card. For all the units to be licensed, the license keys
obtained from Karel are entered to the system and kept on the plug encrypted. If somehow
the SGB is removed from the CPUKON card, all the licenses become disabled.
Appearance of the DS200 CPUKON card and the connectors on it are shown in the
illustration below.