Regulus uREG, User Manual

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uREG User Manual
87

16*10.24 s,

32*5.12 s.
In addition, the IF-4 module combined with the MB-2 or MB-3 motherboard provides a data
recorder operated at 3200 Hz (64 samples per period) and recording of up to 192 digital states .
Optionally, the following additional settings can be declared in the IF-4 [32 MB] module
(mode 3200 Hz) :

2*163.84 s,

4*81.92 s,

8*40.96 s,

16*20.48 s,

32*10.24 s.
Each buffer is a cyclic register and can assume one of two states: empty buffer or full buffer.
Once the empty buffer is selected, recording is taking place continuously from initiation (for any
period of time) to latch activation. The latch stops recording in the buffer, which has been
active so far, and changes its state to ‘full’. Then the local computer selects another empty
buffer and initiates recording.
The procedure for selecting the recording buffer becomes complicated when all buffers are
full, but another buffer must be selected for data logging. The solution in this situation depends
on the user’s preferences as defined in ‘
Overwriting mode ’.
The following options are available:
-
unconditional permission to overwrite (always overwrite ), which means a permission to
change the state of the buffer with the oldest records (and irreversible deletion) into an
empty buffer. If this is the case,
one buffer is always empty and recording is continuous.
This method is recommended for a high number of buffers.
- complete prohibition to overwrite (never overwrite ) – once all buffer are filled, the
recorder is turned off. Recording can be resumed only after buffers are reset (remote
operation). In
uREG
units equipped with GH / GV graphic display panels, the full state of all
buffers is additionally signaled by the icon .
Functionality of the data recorder, rules of division into buffers and their handling are fully
defined in the system functor – REJESTRATOR. The REJESTRATOR function has to settings
(‘
configuration of buffers ’ and ‘ overwriting mode ’) determines how to handle buffers.
The functor has two groups of latch activating inputs: inputs executing the latch function by
a rising edge (0 – 3) and inputs executing the latch function by a falling edge (4 – 7). As for the
source of latch signals, there are outputs to other functors (generating latch events) tied to
selected recorder inputs.
Latching events usually include shutdown decision and some excitations without direct
shutdown.
For shutting-down events, it is recommended to activate the latch using a falling edge of
OFF signal; then, recording includes the shutdown process and current decay.
For non-OFF events, the latch may follow a delay (if defined in
APPLICATION ) and can be
lagged against the event by any definable time slice (depending on the delay value). It is more
reasonable to latch such events using a rising edge of signal.