
//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH03 1.3D – 316 – [315–323/9]
19.6.2004 9:22PM
3. The total operating time of the machine, and from this information, produce Planned
Preventive Maintenance schedules (PPMs).
Once the ISR instructions have been executed, program control returns back to the
main program, and the PLC will start executing the main program instructions again,
starting with the instruction following the one which was being executed when the
interrupt occurred.
31.2 Interrupt project ^ INT1
The project INT1 simulates the same sequence of operations as PNEU1, but includes
the following modifications:
1.