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PROEL KDC1905 - Bit Masks

PROEL KDC1905
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4.1.5 Bit masks
Many parameters are set using so-called bit masks. In this way, parameters such as yes/no, on/off, such as lock
code blocking for the property or selection of locks to be opened when a given event occurs, are saved.
Each bitmask saves up to 8 different options. In this manual, at the description of each parameter, the weights
for a given setting are given. Activation of selected options takes place after summing up their values.
Conversions can be carried out bilaterally in order to read from the value entered in parameter (saved in the
decimal system) which options have been activated, a conversion from the decimal system to the binary system
should be carried out. This can be done, for example, with a calculator (with binary system support).
This notation is natural for digital electronic devices, where the basic unit of information is a bit 0 or 1. Each
bit in the number has its own weight, and the whole number is defined by their sum:
Table 4: Weights (decimal) of individual bits
Examples of such a bit mask are the flags of premises:
office mode (+1) if the handset is still raised, each connection to the premises will result in a
simulation of pressing the lock button in hearing aid (it will usually result in the lock opening depending
on configuration)
lock code (+2) will block the possibility of door opening with the lock code assigned to premises
mute lock code confirmation (+4) after opening the door with lock code, no acoustic confirmation will
be generated in the device (until the blockade was realized by redirecting the logical number to a physical
number that does not exist in the system)
feedback communication blockade (+8) the flag blocks the call from decoder, between the premises
and defined keyboard (supporting Feedback).
P1 button blockade (+16) the flag blocks possibility of door opening with a button in the decoder,
during a conversation
alternative lock code event (+32) the lock code of property will generate an alternative event (you can
change the system function for a given property)
alternative event for rfid (+64) as for the lock code
forcing impulse addressing (+128) enforces addressing of the old type for a single premise, applies to
new installations with bit addressing (parameter 99 and flag +1) and a single jumper apparatus
For example, to activate the office mode and block the use of lock code confirmation in the premises you need to
set bits 1 and 3 in the mask saved in parameter 99. Therefore, enter there 1+4 = 5 (according to the weights table).
Bit masks are also used when assigning peripherals to events for example, opening a lock by pressing the P1
button on the device. In this case, individual bitmasks activate specific transoms after an event occurs (the
parameter number defines to which event). For example, the definition of parameter 2361 will be assigned to the
locking systems opened after selecting the P1 button during a keyboard call with address 2 (i.e. the first satellite). As
in the previous case, in this parameter it is necessary to enter the number being the sum of bits set. Entering a value
of 0 results in complete disabling of a given functionality
Bit
number
1
2
3
4
5
6
7
8
Weight
1
2
4
8
16
32
64
128

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