Ronan X11CA - Manual (Page 3)

Rev 2.0 : X11CA-IM MASTER MODULE
1
1 OVERVIEW
The X11CA-IM Interface Module monitors alarm module activities. It also provides
special features, such as Slave Modbus RTU Protocol on Port (P2), time stamped
event archive, common trouble alarm, dual horn output, reflash output and system
diagnostic output. All outputs are generated in the form of an open collector
transistor and selectable Form C dry contact. The LEDs on the board indicate serial
communication and system status.
Figure 1-1 X11CA-IM
1.1 Definitions
RS-232 A point-to-point serial connection standard. The RS-232 standard
was designed for communication over short distances (up to 50
feet).
1.2 Revision History
Revision 1.0 ECO11217 : Page 1, Definition Section, RS-232 was revised to
remove the line, ‘and at relatively slow data rates, (up to 20 kbps).
However, in practice, these limits can be exceeded’