OMC-131 True wind display
Users’ manual
V1.14
Page 9
TDC-April-2017
2.2.4 I/O Ports
The OMC-131 has 5 serial I/O ports & 2 analogue outputs available:
Port
4-20mA
0 .. 1 V
0 .. 10 V
Function
6
output 1
x
x
x
Wind speed: True / Relative
output 2
x
x
x
Win direction: True / Relative
* All relevant NMEA messages is all the data required for a slave OMC-131 to work (Input port 1 of a slave
OMC-131 will be connected to output port 4 of another OMC-131).
2.2.5 Input jumper settings Port 1
Port number 1 has jumper settings on the connection board as well as on the
processor board. On the connection board jumper field J1 is used to select
Currentloop or RS422.
J1 jumper position 1-3 and 2-4 = Currentloop input
J1 jumper position 3-5 and 4-6 = RS422 input
On the processor board (right) the following jumper field is used,
J1 jumper position 1-2 = Currentloop input
J1 jumper position 2-3 = RS422 input
J1 jumper position 4-5 = RS485 input (n/a)
The default settings for port 2 are RS422 input 4800 baud.
Input Port is always used for input of wind speed and direction information.
Information can be accepted from several different sensors depending of
settings in hardware and software.
2.2.6 Output jumper settings
Port number 1 has only jumper settings on the connection board:
Port
RS422 CL RS232 Function
1
input
x
x
Wind sensor 1 ( Portside) / Combined NMEA (Slave mode)*
output
x
x
Wind: OMC-160 / OMC-2900 / NMEA MWV T,R,M / NMEA MWV R
2
input
x
x
Wind sensor 2 (Starboard) / Log NMEA VHW
output
x
NMEA MWV T,R, M
3
input
x
x
Gyro: NMEA HDT / Combined heading speed: NMEA VHW
output
x
NMEA MWV T,R, M
4
input
x
x
GPS: NMEA GGA & VTG
output
x
NMEA MWV T,R, M / All relevant NMEA (Master)*
5
input
x
N/A
output
x
NMEA MWV T,R, M / All relevant NMEA
