ABB DSQC639 3HAC025097-00116 module card
Technical data of product parameters
When you assign an DSQC639 3HAC025097-00116 address to the OTU instruction that corresponds to the
address of a physical output, the output device wired to this screw terminal is
de-energized when the bit is cleared (turned off or disabled).
The unlatch instruction tells the controller to turn off the addressed bit.
Thereafter, the bit remains off, regardless of the rung condition, until it is
turned on (typically by a OTL instruction in another rung).
One-shot Rising (OSR) The OSR instruction is a retentive input instruction that triggers an event to DSQC639 3HAC025097-00116
occur one time. Use the OSR instruction when an event must start based on
the change of state of the rung from false-to-true.
When the rung conditions preceding the OSR instruction go from
false-to-true, the OSR instruction will be true for one scan. After one scan is
complete, the OSR instruction becomes false, even if the rung conditions
preceding it remain true. The OSR instruction will only become true again if
the rung conditions preceding it transition from false-to-true.
The SLC 500 and SLC 5/01 processors allow you to use one OSR instruction
per output in a rung; the OSR cannot be within a branch. The SLC 5/02 and
higher processors allow you to use one OSR instruction per output in a rung;
putting the OSR within a branch is permitted.The address assigned to the OSR instruction is not the one-shot address DSQC639 3HAC025097-00116
referenced by your program, nor does it indicate the state of the OSR
instruction. This address allows the OSR instruction to remember its previous
rung state.
Use a bit address from either the bit or integer data file. The addressed bit is
set (1) for one scan when rung conditions preceding the OSR instruction are
true (even if the OSR instruction becomes false); the bit is reset (0) when rung DSQC639 3HAC025097-00116
conditions preceding the OSR instruction are false.
This specifies the value which the timer must reach before the controller sets
the done bit. When the accumulated value becomes equal to or greater than
the preset value, the done (DN) bit is set. You can use this bit to control an
output device.
Preset and accumulated values for timers range from 0 to +32,767. If a timer
preset or accumulated value is a negative number, a runtime error occurs.
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Introduction to main products
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