Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 210)

Preface MicroLogix 1000 Programmable Controllers User Manual
11–22
Rung 4:0
Resets the hole count sequencers each time that the low preset is
reached. The low preset has been set to zero to cause an interrupt to
occur each time that a reset occurs. The low preset is reached
anytime that a reset C5:0 or hardware reset occurs. This ensures that
the first preset value is loaded into the HSC at each entry into the
REM Run mode and each time that the external reset signal is
activated.
| interrupt 3 hole |
| occurred preset |
| due to sequencer |
| low preset |
| reached |
| +INT––––––––––––––––––––+ C5:0 R6:4 |
|–+INTERRUPT SUBROUTINE +––––] [––––––––––––––––––––+–––(RES)––––+–|
| +–––––––––––––––––––––––+ IL | | |
| | 5 hole | |
| | preset | |
| | sequencer | |
| | R6:5 | |
| +–––(RES)––––+ |
| | | |
| | 7 hole | |
| | preset | |
| | sequencer | |
| | R6:6 | |
| +–––(RES)––––+ |
| |