IAI America SCON-CA - Manual (Page 280)

Chapter 10
Appendix
270
3) Dummy plug (Accessories)
Connect a dummy plug to the teaching pendant connecting connector.
Make sure to connect a dummy plug if the AUTO mode is specified.
Without the connection, it will be the emergency stop condition.
Model : DP-4
Plug : TX20A-26PH1-D2P1-D1E (JAE)
Signal
Short-circuit processing.