VA Motion Controller Programming Manual
258
scan (
CYCLIC
) , and the scan period, task type setting and scan perioDAre set according to their
own needs. See the programming model in this manual
Hardware
Tasks.
DERIVAT_1 ( ENABLE:= IN, RUN:=IN1,
XIN:=IN2, CYCLE:=T ) ;
OUT:=DERIVAT_1.XOUT;
Note : IL, ST language programming need to insert variables ENABLE, RUN, etc. in the
current POU variable worksheet or use constants
DERIVAT
data processing instruction type
Execution function block when TRUE
FALSE , the function block is pauseDAnd the output
is set to 0
When Q constant, iNSeconds, this instruction is
actually
[the XIN
(
n-
)
-XIN
(
n--. 1
) ]
/ CYCLE
differential
Output value, differential result
10.6.8 EVENT_TASK ( trigger event )
LD, FBD
programming language
Function: The
EVENT_TASK
instruction is used to trigger an event task. The event number can
be defined. If the event number exists in an event task of the user, it is activated, that is, the
program is assigned to the event task.