Basic Characteristics RAPID

CONNECT Connects an interrupt to a trap routine
Example
Arguments
CONNECT is used to find the identity of an interrupt and connect it to a trap routine.
The interrupt is defined by ordering an interrupt event and specifying its identity. Thus,
when that event occurs, the trap routine is automatically executed.
VAR intnum feeder_low;
CONNECT feeder_low WITH feeder_empty;
ISignalDI di1, 1 , feeder_low;
An interrupt identity feeder_low is created which is connected to the trap routine
feeder_empty. The interrupt is defined as input di1 is getting high. In other words,
when this signal becomes high, the feeder_empty trap routine is executed.
CONNECT Interrupt WITH Trap routine
Interrupt Data type: intnum
The variable that is to be assigned the identity of the interrupt.
This must not be declared within a routine (routine data).
Trap routine Identifier
Program execution
Limitations
The name of the trap routine.
The variable is assigned an interrupt identity which can then be used when ordering or
disabling interrupts. This identity is also connected to the specified trap routine.
Note that before an event can be handled, an interrupt must also be ordered, i.e. the
event specified.
An interrupt (interrupt identity) cannot be connected to more than one trap routine.
Different interrupts, however, can be connected to the same trap routine.
When an interrupt has been connected to a trap routine, it cannot be reconnected or
transferred to another routine; it must first be deleted using the instruction IDelete.
RAPID Reference Manual 8-CONNECT-1