Technical data

Table Of Contents
SFCs for Handling Time-Delay Interrupts
System Software for S7-300/400 System and Standard Functions - Volume 1/2
A5E00709327-01
10-5
10.4 Canceling a Time-Delay Interrupt with SFC 33
"CAN_DINT"
Description
With SFC 33 "CAN_DINT" (cancel time-delay interrupt), you cancel a time-delay
interrupt that has already started (see Section Starting a Time-Delay Interrupt with
SFC 32 "SRT_DINT"). The time-delay interrupt OB is then not called.
Parameter Declaration Data Type Memory Area Description
OB_NR INPUT INT I, Q, M, D, L,
constant
Number of the OB to be canceled (OB20 to
OB23).
RET_VAL OUTPUT INT I, Q, M, D, L If an error occurs while the function is
active, the actual parameter of RET_VAL
contains an error code.
Error Information
Error Code (W#16#...) Explanation
0000 No error has occurred.
8090 Incorrect parameter OB_NR
80A0 Time-delay interrupt has not started.
8xyy General error information, see Evaluating Errors with Output Parameter
RET_VAL