Ronan X11CA Software Manual - Manual (Page 6)

Rev 1.3 Series X11CA Computer Annunciators: X11CA Configuration Software User’s Manual
1. Overview
Hardware Control-© 2003 Ronan Engineering 2
Figure 1-2 X16PDM System
1.1 Abbreviations
AUX : Auxiliary Relay
CTA /CA : Common Trouble Alarm
FC : Field Contact
GF : General Function
H1 : Horn 1
H2 : Horn 2
IP : Internet Protocol
NC : Not Connected
PDM : Programmable Digital Monitors
TCP : Transport Control Protocol
TO : Transistor Output