2 Questions(s7-200)

// on the first scan, call subroutine 0
LD SM0.1
CALL SBR_0


NETWORK 1 // Subroutine 0
LD SM0.0
MOVB 100 SMB34 // Set the interval for the timed interrupt 0 to 100 ms
ATCH INT_0 10 // Attach timed interrupt 0 (Event 10) to INT_0
ENI // Global interrupt enable



NETWORK 1 // Interrupt 0
// Read the value of AIW4 every 100 ms

LD SM0.0
MOVW AIW4 VW100

I think it is wright, but if i want to measure the AIW4 every 5 seconds what shall i do?

Because SMB34 Timed Interrupt 0: Time interval value (in 1 ms increments from 1 ms to 255 ms).

2nd question

How can i store 1000 values of AIW4 every 5 sec?

p.s: sorry for my English

bye

Depends on your model I think but Event 21 would allow you to use T32 which can go as high as 32.767 seconds. Or you could allow the interrupt routine to update the VW100 every 1/4 sec (250 ms) then use another timer to Add to Table every 5 secs, Add to Table will allow you 100 entries excluding the parameter specifications.