B&B Electronics VFG3000 - Manual - Manual (Page 370)

W AIT D ATA ( DATA , COUNT , TIME ) V LINX F IELDBUS G ATEWAY M ANAGER U SER M ANUAL
P AGE 354
W
AIT
D
ATA
(
DATA
,
COUNT
,
TIME
)
A RGUMENT T YPE D ESCRIPTION
data any First array element to be read.
count int Number of elements to be read.
time int The timeout period in milliseconds.
D ESCRIPTION
Requests that count elements from array element data onwards to read on the next comms
scan. This function is used with arrays that have been mapped to external data, and which
have their read policy set to Read Manually. Unlike
ReadData() , the function waits for up to
the time specified by the time parameter in order to allow the data to be read. The return
value is one if the read completed within that period, or zero otherwise.
F UNCTION T YPE
This function is active.
R ETURN T YPE
int.
E XAMPLE
status := WaitData(array1[8], 10, 1000)