Emergency stop (E-stop)
A stop function started by a single human action, usually a latching red mushroom button, for use when the normal stop is not enough.
Why it matters for wireless
ODVA lists wireless teach pendants and emergency stop devices among mobile wireless uses. With a safety protocol, a communication failure brings the system to a safe state, so a coverage gap along the operator's path becomes a stop.
As summarized in a vendor white paper, ISO 13850 describes the emergency stop function as one intended to avert or reduce hazards and to be initiated by a single human action when the normal stopping function is inadequate. The device latches: the command is maintained until the device is reset, and resetting it must not restart the machine by itself.
An emergency stop is not a protective stop. A person triggers the first; a safeguard triggers the second, and one robot vendor treats them with different stop categories and reset rules.
About this page
Built from 4 sources: 1 protocol owner or alliance and 3 vendor documents. Researched and drafted with AI assistance, then reviewed and approved by Ben Rutter on . How pages are made
- First published
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Cite this page
Plain
Ben Rutter. "Emergency stop (E-stop)." OT Wireless, published October 5, 2026. https://otwireless.com/glossary/emergency-stop/
APA 7
Rutter, B. (2026, October 5). Emergency stop (E-stop). OT Wireless. https://otwireless.com/glossary/emergency-stop/
BibTeX
@misc{rutter2026emergencystop,
author = {Rutter, Ben},
title = {{Emergency stop (E-stop)}},
year = {2026},
howpublished = {\url{https://otwireless.com/glossary/emergency-stop/}},
organization = {OT Wireless},
}