Download LIBRARY B FUNCTION BLOCKS INSTRUCTION MANUAL

Transcript
Block Library
true
PV_D
false
true
PRE_OUT_D
false
* See note 1
* See note 1
TIM ER_SP
OUT_EXP
0
TIM ER_SP
OUT_REM
*
0
*
*
Time
TIM ER_SP
TIM ER_SP
TIM ER_SP
TIM ER_SP
TIM ER_SP
* Note 1: Returns to zero if QUIES_OPT = CLEAR
Timer Example when TIMER_TYPE = DEBOUNCE
•
If TIMER_TYPE is PULSE, a false-to-true change on the combined input, PV_D, will initiate a
true pulse at PRE_OUT_D whose duration is determined by the TIMER_SP value. At the end of
the time duration, the output, will return to false. Further false-to-true transitions of the
combined input while PRE_OUT_D is true will be ignored.
true
PV_D
false
true
PRE_OUT_D
false
* See note 1
* See note 1
TIM ER_SP
OUT_EXP
0
TIM ER_SP
OUT_REM
0
TIM ER_SP
* Note 1: Returns to zero if QUIES_OPT = CLEAR
TIM ER_SP
Time
Timer Example when TIMER_TYPE = PULSE
•
If TIMER_TYPE is RT_PULSE, (Re-Triggerable pulse type) a false-to-true change on the
combined input, PV_D, will initiate a true pulse at PRE_OUT_D whose duration is determined
by the TIMER_SP value. At the end of that time duration PRE_OUT_D will return to false. If the
combined input returns to false and presents a subsequent false-to-true transition while the
timer is timing, the timer shall be reinitialized and PRE_OUT_D shall continue to be true.
2.153