Honeywell MKXXII RS-232 Communication with the Egpws, Baud, No Parity, 8 bits, and 1 stop bit

Honeywell

MK XXII Installation Manual

APPENDIX C – WinViews Operation Instructions

RS-232 COMMUNICATION WITH THE EGPWS

The EGPWS contains software that allows monitoring of its internal parameters, for testing purposes, without altering its operation. The monitoring of these parameter values enables the operator to quickly determine if the correct signal and scaling is being used by the EGPWS computer. The communication link utilizes the RS-232 Communication Protocol configured as follows:

19200 Baud, No Parity, 8 bits, and 1 stop bit.

The RS-232 interface with the EGPWS is accomplished via the J3 test connector on the front of the EGPWS. The connection between a PC (with a standard DB9 serial port connector) and the EGPWS RS-232 interface is defined as follows: (Please note that the EGPWS will activate its RS- 232 port only when it receives the command CONTROL Z after power is applied to the EGPWS. The CONTROL Z command is automatically sent by WinVIEWS)

EGPWS Front Connector

Standard DB9 Connector (for a PC)*

RS-232 Receive

Pin 3

Pin 3

RS-232 Transmit

Pin 4

Pin 2

RS-232 Ground

Pin 1

Pin 5

*NOTE: Some PC Comm Ports have Pins 2 & 3 reversed from what is described above.

The mating connector for the EGPWS J3 test connector is a male (pins) 15 pin double density D- subminiature type, Positronics Industries (kit) part number ODD15M1OYOZ or the following individual parts:

Nomenclature (AMP)

Connector Shell (HDP-22 Crimp Snap In Contact)

Size 22 DM Crimp Snap In Contacts Pin 0.030

Backshell (Shielded Cable Clamp Assembly)

Jackscrews, 2 required (4-40 Male Jackscrew Kit)

Grommet Sets

Amp Part Number

748364-1

204370-2

745854-5

747784-8

747746-1

Military Part Number

reference MIL-C-24308

M39029/58-360

The following tools will work with Positronics, Amp, and Mil Spec Connectors:

Insertion / Extraction Tool

Hand Crimp Tool

Positioner

91067-1

M81969/1-04

M22520/2-01

M22520/2-09

CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 060-4314-225 REV: C SHEET 145