The interface is menu-driven. Pressing ALT usually brings up the main menu structure.
| Symptom | Probable cause | Fix |
|---------|----------------|-----|
| Outputs stay on after power loss | No retentive settings | Use M marker or set block as retentive in PARAM |
| Counter resets unexpectedly | Power cycle clears it | Set counter retentive: C01 → Edit → Retain=Yes |
| RTC schedule not working | Battery dead or not set | MENU → Clock → Set date/time, replace CR2032 if old |
| Program won't transfer | Wrong cable or baud rate | Use 9600 baud, 8N1, easySoft cable (not standard USB-RS232) |
| Input reads ON when nothing connected | Sinking/sourcing mismatch | Check common (C0) connection: Connect C0 to N (AC) or 0V (DC) | moeller easy512-ac-rc programming manual
For complex programs, use Jump and Label to skip sections. Jumps are conditional, similar to skip in older PLCs. The interface is menu-driven