Tyco MX4428 technical manual 1GENERAL

MX4428 MXP Engineering /Technical Manual	Document: LT0273
MXP Technical Description

7.1GENERAL

The MXP has two major functions:

(i)To provide an interface to an MX4428 responder (communications/power) loop, via which data gathered by the MXP may be transferred to the MX4428 Master for display, annunciation, and processing as appropriate.

(ii)To provide an interface to the Analogue Loop. Data retrieved from the devices connected to the Analogue Loop is processed to determine the ALARM/NORMAL/ FAULT status of each device, and this data is passed on to the MX4428 Master via the MX4428 Loop Interface. The Analogue Loop interface also allows outputs to be sent to those devices that support them, to initiate device tests, activate relays, etc.

The MXP is implemented as one printed circuit board (1901-213).

Page 7-2 24 March 2006 Issue 1.5