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LD Language Elements
SR2MAN01 11/2007 121
Configuration
from Front Panel
The block's parameter settings can be accessed either when entering the command
line or from the PARAMETERS menu if the block has not been padlocked.
The parameters to enter are the following:
z Cycle type,
z Duration of pulse,
z Preset value,
z Type of counting,
z Parameter lock,
z Latching.
Cycle type:
This parameter determines the behavior of the fast counter when it reaches the
preset value (when it is in TO mode), or when it reaches the value zero (when it is
in FROM mode):
The cycle type may be:
z Single: Reaching the preset value (TO mode) or the zero value (FROM mode)
does not affect the current value of the counter.
The current counter value changes on an on-going basis. The output is activated
when the current value is greater than the preset value (TO mode) or when the
current value is less than the preset value (FROM mode).
z
Repetitive
: In the
TO
mode, the current value is reinitialized when it reaches the
preset value and in
FROM
mode, it is reset to the preset value when it reaches zero.
The output is enabled following this reinitialization and remains active for a time
that may be configured with the parameter: Duration of pulse (from 1 to 32,767
times 100 ms).
Duration of pulse:
Symbol of the Duration of pulse parameter:
This parameter is only displayed if the cycle is repetitive. It determines the duration
during which the fast counter remains active when the current value reaches the
preset value (when it is in TO mode), or when it reaches the value zero (when it is
in FROM mode).
This value must be between 1 and 32,767 (x 100 ms).
Preset value:
Symbol of the Preset value parameter:
This value is between 0 and 32,767, and represents:
z The value to reach in the counting mode to the preset value (TO mode),
z the initial value in the down-count mode from the preset value (FROM mode).
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