WALKER P1249
WIND DATA DISPLAY
Page 1 of 19
GENERAL
The P1249 Wind Data Display is housed in a DIN 43700 pattern (Din144 x 144) case and reads IEC
61162-1:2000, NMEA 0183, “MWV” and “MWD” serial data to provide readings of Relative, True,
and True to Ship, wind speed and direction. Power supply requirement is 24vDC.
The unit has two 256*64 pixel OLED Graphic displays, 4 Touch switches; for display mode, scaling
and illumination control, 4 NMEA 0183 inputs and 1 NMEA 0183 output. A ring of LEDs in 5° steps
also indicates wind direction.
Three “MODES” of operation are provided.
In “Mode 1”, activated by pressing on the “REL” key, the top display will show Relative wind speed,
with the lower display showing Relative wind direction. If the “REL” key is successively pressed 3
times or more within 3 seconds, then the displayed Wind Speed units will change with each
subsequent key press in the sequence KTS, M/S, KPH and MPH.
In “Mode 2”, activated by pressing on the “TRUE” key, the top display will show True wind speed,
with the lower display showing True wind direction.
A further press of the “TRUE” key will toggle the display to “Mode 3”, which will display “True to
Ship” wind data. Further presses of the “TRUE” key will toggle the display between Mode 2 and
Mode 3.
Relative, True or True to Ship, wind direction is also indicated on the ring of LEDs as appropriate to
the activated display mode.
The P1249 Wind Data Display will accept and re-transmit valid IEC 61162-1: 2000 (NMEA 0183)
messages with the following formatters; MWV, MWD, VLW, VHW, VBW, HDT, HDM, HDG,
VTG, JLG (proprietary), GGA, XDR and MTW. LEDs, visible at the rear face of the unit, provide
additional information for customer confidence and diagnostic purposes. The unit accepts and
displays wind data from valid IEC 61162-1: 2000 (NMEA 0183) “MWV” and “MWD” messages.
The display has “illumination” up [∆] and down [∇] touch switches, which allow dimming to
extinction. The indicator is splash-proof but is not waterproof.
If switched off, the previous mode and level of illumination are retained in “flash” memory.
Refer to OPERATION section for full information.
.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 2 of 19
INSTALLATION
The display can be readily fitted into a panel with a cut-out conforming to that shown on drawing
3347-A3-71, and secured in position using the two clamps provided, one at either side of the indicator
casing. This necessitates access to the rear of the panel concerned in order to fit and tighten the
securing clamps provided. Removal of the indicator for servicing etc. would also require such rear
panel access.
In the chosen fitted position, access to the touch switches along the bottom of the weather data display
fascia is necessary for the control of the unit.
See drawing 3418-A3-10 for Installation drawing of the P1249 Wind Data Display.
See drawing 3347-A3-71 for Panel Cut-Out detail.
CABLING
Cable connection into the weather data display is normally via free terminal blocks fitted to the
terminals soldered directly onto the rear CPU board and which project through the rear panel of the
instrument.
When using screw terminal connections, a two core cable (0.5mm CSA) is required for connection of
the 24vDC power supply.
Two core (twisted pair) cable/s (0.5mm CSA) with overall screen is/are required for serial data
connection. This cable specification applies both to the NMEA 0183 input from the talker/s
concerned and the NMEA 0183 output “re-transmit facility” that is also available for use, if required.
Input RJ45 and output RJ45 connectors are also available at the rear of the indicator. These would
normally be used for “daisy chaining” additional, local, displays of the same generic type.
Refer to drawing 3418-A3-11: Connection Diagram for the P1249 Wind Data Display.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 3 of 19
OPERATION
Touch Keys
There are four touch keys on the P1249. The keys operate by a charge transfer sensing method. A firm
touch with a bare finger in the sensing area of the key is sufficient to actuate a key press.
REL Key
Pressing this key will set the display into Display Mode 1.
In Display Mode 1, Relative Wind Speed is displayed on the top display and Relative Wind Angle is
displayed on the bottom display. If the REL key is successively pressed 3 times or more, within 3
seconds, then the displayed Wind Speed units will change with each subsequent key press in the
sequence KTS, M/S, KPH, and MPH.
TRUE Key
Pressing this key will toggle the display between Display Mode 2 and Display Mode 3.
In Display Mode 2, True wind speed is displayed on the top display and True wind direction is
displayed on the bottom display.
In Display Mode 3, True to Ship wind speed is displayed on the top display and True to Ship wind
direction is displayed on the bottom display
UP Key
The UP key Increases the OLED display brightness and the Blue Key backlight illumination. There
are 12 levels of brightness from off to full brightness.
Each key press increases the brightness by 1 level.
DOWN Key
The DOWN key decreases the OLED display brightness and the Blue Key backlight illumination.
There are 12 levels of brightness from full brightness to off.
Each key press decreases the brightness by 1 level.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 4 of 19
Display Mode 1
In Display Mode 1 the top display shows Relative wind speed and the bottom display shows Relative
wind direction 0 to +/- 180 degrees. Wind direction is also indicated by a ring of LEDs in 5 degree
steps. Each LED is centered on the indicated angle and will be illuminated if the Relative wind Angle
is + or – 2.5 degrees from that angle. For example the 10 degree LED will be illuminated if the
Relative wind Angle is between 7.5 and 12.5 degrees.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 5 of 19
Relative Wind Speed
In Display Mode 1, the top display shows Relative Wind Speed. Any value between 000.0 and 999.9
Knots, Metres per Second, Kilometres per Hour, or Miles per Hour can be displayed in the formats
below.
999.9
KTS
000.0
KTS
Any values outside this range, or if no Relative Wind Speed data is available, will be indicated by the
following display.
---.-
KTS
Relative Wind speed and angle (direction) data in MWV messages with the invalid flag set to ‘V’
(Invalid) is not displayed and will be indicated by the above display.
By pressing the REL key 3 times or more, as per the instructions under “REL” Key on page 3, the
Wind Speed units can be changed to indicate Knots, Metres per Second, Kilometres per Hour, and
Miles per Hour. An example is shown below.
025.0 012.9 046.3
KTS
M/S
KPH
028.8
MPH
Relative Wind Angle
In Display Mode 1, the bottom Display shows Relative Wind Angle (direction). Any received value
between –180.0 and +360.0 will be displayed. Received values > +180.0 degrees will be displayed as
negative values. For example 270.3 degrees will be displayed as 270.3-360.0 = -89.7 degrees.
-089.7
Any values outside this range, or if no Relative Wind Angle data is available, will be indicated by the
following display.
----.Relative Wind speed and angle (direction) data in MWV messages with the invalid flag set to ‘V’
(Invalid) is not displayed and will be indicated by the above display.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 6 of 19
Relative Wind LEDs
Any relative wind angle, between +2.5 degrees and +177.5 degrees, will be indicated by a GREEN
LED on the right hand side. Green indicating that the relative wind is from the Starboard side of the
ship. Any relative wind angle, between -2.4 degrees and -177.5 degrees, will be indicated by a RED
LED on the left hand side. Red indicating that the relative wind is from the PORT side of the ship. A
relative wind angle between -2.5 degrees and +2.5 degrees will be indicated by an AMBER LED at
the 0 position, and a relative wind angle between +177.5 and -177.5 degrees will be indicated by an
AMBER LED at the 180 position.
The 0 and 180 degree legends are illuminated in AMBER. The 90 degree Starboard Legend is
GREEN and the 90 degree Port legend is illuminated RED.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 7 of 19
Display Mode 2
In Display Mode 2, the top display shows True wind speed and the bottom display indicates True
wind direction 0 to 359.9 degrees. True wind direction is also indicated by a ring of LEDs in 5 degree
steps. Each LED is centered on the indicated angle and will be illuminated if the True wind Angle is +
or – 2.5 degrees from that angle.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 8 of 19
True Wind Speed
In Display mode 2 the top display shows True Wind Speed. Any value between 000.0 and 999.9
Knots, Metres per Second, Kilometres per Hour, or Miles per Hour, can be displayed in the formats
below.
999.9
KTS
000.0
KTS
Any values outside this range, or if no True Wind Speed data is available, will be indicated by the
following display.
---.-
KNOTS
Depending on what Wind Speed Units have been set, the display would, as an example, indicate a
True Wind Speed of 25 Knots in one of the following formats.
025.0 012.9 046.3
KTS
M/S
KPH
028.8
MPH
True Wind Angle
In Display Mode 2, the bottom display shows True Wind Angle. Any received value between 0.0 and
+360.0 will be displayed. A received value of 360.0 degrees will be shown as 0 degrees.
289.7
Any values outside this range, or if no True Wind Angle data is available, will be indicated by the
following display.
---.-
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 9 of 19
True Wind LEDs
Any True wind angle between 0 degrees and 360.0 degrees will be indicated by an AMBER LED.
All cardinal point Legends, N, S, E and W, are illuminated in RED
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 10 of 19
Display Mode 3
In Display Mode 3, the top display shows True to Ship (TTS) wind speed and the bottom display
shows True to Ship (TTS) wind direction 0 to +/- 180 degrees. Wind direction is also indicated by a
ring of LEDs in 5 degree steps. Each LED is centered on the indicated angle and will be illuminated if
the TTS wind angle is + or – 2.5 degrees from that angle.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 11 of 19
True To Ship Wind Speed
In Display mode 3, the top display shows True To Ship Wind Speed. Any value between 000.0 and
+999.9 Knots, Metres per Second, Kilometres per Hour, or Miles per Hour can be displayed in the
formats below.
999.9
KTS
000.0
KTS
Any values outside this range, or if no Wind Speed data is available, will be indicated by the
following display.
---.-
KTS
TTS Wind speed and angle data in MWV messages with the invalid flag set to ‘V’ (Invalid) is not
displayed and will be indicated by the display above.
Depending on what Wind Speed Units have been set, the display would, as an example, indicate a
TTS Wind Speed of 30 Knots in one of the following formats.
030.0 015.4 055.6
KTS
M/S
KPH
034.5
MPH
True To Ship Wind Angle
In Display Mode 3 the bottom display shows TTS Wind Angle. Any received value between -180.0
and +360.0 will be displayed. Received values > +180.0 degrees will be displayed as negative values.
For example 270.3 degrees will be displayed as (270.3 – 360.0) = -89.7 degrees.
-089.7
Any values outside this range, or if no TTS wind Angle data is available, will be indicated by the
following display.
----.TTS wind speed and angle data in MWV messages with the invalid flag set to ‘V’ (Invalid) is not
displayed and will be indicated by the above display.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 12 of 19
True To Ship LED’s
Any True To Ship (TTS) wind angle, between +2.5 degrees and +177.5 degrees, will be indicated by a
GREEN LED on the right hand side. Green indicating that the TTS wind is from the Starboard side of
the ship. Any TTS wind angle, between -2.4 degrees and -177.5 degrees, will be indicated by a RED
LED on the left hand side. Red indicating that the TTS wind is from the PORT side of the ship. A
TTS wind angle between -2.5 degrees and +2.5 degrees will be indicated by an AMBER LED at the 0
position, and a TTS wind angle between +177.5 and -177.5 degrees will be indicated by an AMBER
LED at the 180 position.
The 0, (+)90, (-)90, and 180 degree legends are illuminated in AMBER.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 13 of 19
NMEA 0183 (IEC 61162-1: 2000) Serial Data
Any of the following NMEA messages seen at any of the 4 input channels are checked for validity
and are re-transmitted to the output channel at a frequency of 1 Hz by the instrument.
MWV, MWD, VLW, VHW, VBW, HDT, HDM, HDG, VTG, JLG, GGA, XDR and MTW.
The P1249 accepts and displays wind data from NMEA MWV and MWD messages.
All wind data will timeout 10 seconds from the last received valid data.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 14 of 19
P1249 Wind Indicator Flow diagram
M WV, MWD, VLW, VHW, VBW, HDT, HDM, HDG, VTG, JLG,
GGA, XDR, and M TW valid NMEA messages passed through to
output channel 1
OU T
CH1
CH 1 IN
D isplays Indicating
Relative , True,
and True to Ship
Wind Speed and
Direction
CH2 IN
Top D isplay
C
O
M
B
I
N
E
R
MWV and
MWD
Bottom display
CH3 IN
Ring of LED S indicating Wind
Direction
CH4 IN
NMEA Data in
P1249
Data Flow Diagram 5 May 2009
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 15 of 19
LEDS
During normal operation, the blue “CPU OK” LED will flash at a rate of 1 Hz.
Each input channel has an Orange “Data” LED and a Green “Valid” LED. The Orange “Data” LEDs
indicate the presence of communications activity on that channel. The Green “Valid” LEDS indicate
the presence of valid data from any of the following NMEA messages, MWV, MWD, VLW, VHW,
VBW, HDT, HDM, HDG, VTG, JLG, GGA, XDR and MTW. The Green channel “Valid” LEDs will
timeout after 4 seconds if no valid data is received on the appropriate channel.
The LED positions on the back panel are shown below.
Back Panel
Note RLY1, RLY2 and RLY3 are not used in this application.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 16 of 19
CONNECTIONS
The back panel RJ45 connections are as follows.
INPUT RJ45
Pin No.
1
+24V (IN)
2
+24V (IN)
3
RX CHANNEL 1 (A)
4
HSBA
5
HSBB
6
RX CHANNEL 1 (B)
7
0V (IN)
8
0V (IN)
OUTPUT RJ45
Pin No.
1
+24V (OUT)
2
+24V (OUT)
3
TX CHANNEL 1 (A)
4
HSBA
5
HSBB
6
TX CHANNEL 1(B)
7
0V (OUT)
8
0V (OUT)
Screw Terminal Connections
Screw terminal connections are available at the rear of the instrument for CH1, CH2, CH3, and CH4
NMEA IN, and also CH1 NMEA OUT. Instead of using the +24V / 0V (IN) Pins of the INPUT RJ45
connector, 24vDc can be applied to the unit via one pair of the +24v / 0v “Loop Thro” screw
terminals tagged “24vDC”.
Channel 1 IN Connections.
(Note these are common with INPUT RJ45 connections)
CH1 A
NMEA Channel 1 RX (A)
CH1 B
NMEA Channel 1 RX (B)
CH1 SCN
Instrument Chassis GND
Channel 2 IN Connections
CH2A
CH2B
NMEA Channel 2 RX (A)
NMEA Channel 2 RX (B)
Channel 3 IN Connections
CH3A
CH3B
NMEA Channel 3 RX (A)
NMEA Channel 3 RX (B)
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 17 of 19
Channel 4 IN Connections
CH4A
CH4B
NMEA Channel 4 RX (A)
NMEA Channel 4 RX (B)
Channel 1 OUT Connections.
(Note these are common with OUTPUT RJ45 connections)
CH1 A
NMEA Channel 1 TX (A)
CH1 B
NMEA Channel 1 TX (B)
CH1 SCN
Instrument Chassis GND
24vDC Power “LOOP THRO” Connections (using screw terminals only)
(Note these are common with INPUT/OUTPUT RJ45 connections)
+
+24v
0v
0v
Note: Only one pair of the two available pairs of screw terminals must be used to connect to 24vDC
supply. The other pair is then available for 24vDC (OUT), if required.
Real Panel RJ45 and Screw terminal connections
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 18 of 19
MAINTENANCE
SERVICING:
There are no user serviceable parts requiring routine maintenance.
FAULT FINDING:
Check availability of 24vDC power to the unit.
Any loss, or interruption, of input serial data will cause the associated displays to revert to show
“dashes” as per the information provided in the “Display Mode” sections.
In the first instance, remove the P1249 indicator from the panel concerned and check all LEDs at the
rear panel of the unit. Check “CPU OK” LED to ensure processor is running. Dependent upon status
of “Valid” and “Data” LEDs, check all connected “Talkers” as appropriate.
If the problem is found to be a loose input NMEA 0183 connection, re-connect the cable core/s
concerned. Incoming serial data will be restored to the display and digital readings will recommence.
If associated talkers are transmitting correct serial data and if connections at the talker/s and at the
P1249 unit are satisfactory, then continuity of the serial data transmission cable, from the talker itself,
must be checked.
If the fault is found to be within the P1249 wind data display itself, the unit must be returned for
investigation / repair.
REFERENCES
Drawing 3418-A3-10: Installation drawing of P1249 Wind Data Display
Drawing 3347-2-71: Panel Cut-Out Detail
Drawing 3418-A3-11: Connection Diagram: P1249 Wind Data Display
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
WALKER P1249
WIND DATA DISPLAY
Page 19 of 19
SPECIFICATION
Digital: 2 x 256*64 pixel OLED Graphic
displays
A ring of LEDs in 5° steps also indicates wind
direction
Illumination dimmable by integral touch
switches
Mode operation by integral touch switches
Knots, Metres per Second, Kilometres per
Hour or Miles per Hour wind speed options via
integral touch switch
DISPLAY
PARAMETERS
Relative Wind Speed and Relative Wind
Direction
As per appropriate field of IEC 61162-1: 2000
NMEA 0183 “MWV” message.
True Wind Speed and True Wind Direction
As per appropriate field of IEC 61162-1: 2000
NMEA 0183 “MWD” message.
True to Ship Wind Speed and True to Ship
Wind Direction
As per appropriate field of IEC 61162-1: 2000
NMEA 0183 “MWV” message.
Accuracy
NMEA INPUT / OUTPUT CONNECTIONS
INPUT / OUTPUT FORMAT
COMMUNICATION FORMAT
STANDARDS
POWER REQUIREMENT
OTHER OUTPUTS
COMPASS SAFE DISTANCE
ENVIRONMENTAL
MECHANICAL
Size / Weight
Dependant upon talker
Via integral terminal blocks / RJ45 connectors
NMEA 0183
RS422
IEC 61162-1: 2000
24v DC 80mA
NMEA 0183 re-transmit facility
Standard: 0.9m Steering: 0.5m
Compliant with EN 60945: 2002
Mounting
Material:
See drawing 3418-A3-12
Din 43700 Pattern: Din 144 x 144
Weight: 0.7kg (inc clamps)
Panel / Console mounting:
See cut-out drg 3347-A3-71
Case: Aluminium Alloy
Inner Frame: Zinc; die-cast
Outer Bezel: Polycarbonate; black
Front Window: Allyl Carbonate: Printed
Case Back: Aluminium Alloy
Note:
This document shall not form part of any contract.
In accordance with our policy of continuous development, changes may be made from time to time
without prior notice.
© J. Lilley and Gillie Ltd.
Ref: P1249/ds/ra/190 Issue 2
138.0 +1.0
138.0 +1.0
SQUARE CORNERS REQUIRED