PLC glossary
Timer
An instruction that measures time against a chosen wait. Its stored values let it follow that wait across many scans.
- Also called
- timing instruction
- On site
- A valve alarm waits briefly so a healthy valve has time to open.
- Siemens
- A declared IEC timer instance, such as TON_TIME.
- Rockwell
- TIMER in classic Ladder; FBD_TIMER for the supported ST/FBD timing instructions.