Deif XDi Series User Manual

DESIGNER’S HANDBOOK 4189350049C EN Page 87 of 206
5.8 NX1 and NX2 NMEA interface module
Serial NMEA data is often the primary data source for XDi-N. To receive
and transmit NMEA data the NX2 module must be mounted on the rear
plate of the XDi-N main unit.
To reduce the number of extension modules needed, NMEA data can be
shared with other XDi-N units via the CAN bus using the XDi-net
protocol. Basic numeric data can also be shared with XDi-D/M, but not
the special data formats like for example time/date and position). Other
devices on the CAN bus may also use NMEA data provided by the XDi-
N.
If only NMEA output data is required, the NX1 module can be used.
The NX1 NMEA output module contains one serial output following
IEC61162-1 (NMEA0183) and may be used to supply output data like
rudder angle and RPM to external devises like integrated navigation
system or a VDR.
5.8.1 Connection of the NX modules
Term. no.
Signal
NX2
Label
NX1
Label
Remark
1
COM 3 input
NMEA 0183
RX3 – B
Do not connect
Opto-insulated serial input
RS-422 (IEC 61162-1 and -2)
2
RX3 – A
“
3
COM 1 input
NMEA 0183
RX1 – B
“
Opto-insulated serial input
RS-422 (IEC 61162-1 and -2)
4
RX1 – A
“
5
Contact input 1
C-IN 1
C-IN 1
Push-button input 1 with internal
pull-up to +5 V
6
Contact input 2
C-IN 2
C-IN 2
Push-button input 2 with internal
pull-up to +5 V
7
COM 1 output
NMEA 0183
TX1 – A
TX1 – A
RS-422 Differential output
(IEC 61162-1)
8
TX1 – B
TX1 – B
9
Common GND
COMMON
COMMON
Note1
10
COM 2 in/out
NMEA 0183
RX/TX2 – B
Do not connect
RS-485 configured as input or output.
11
RX/TX2 – A
Do not connect
Dill switch
(red)
RS-485
termination
See picture
above
No function
120 Ω termination resistor, default OFF.
The red dill switch is located above term. 10.
Note1: Common (Reference GND) for the RS-485 COM port, COM 1 output and the two contact inputs.
Important: The common GND terminal should NOT be connected to the NMEA cable shield, the cable shield
should be connected to a good ground connection in only one point !
NX2 is the extension module enabling the XDi-N to receive and transmit NMEA 0183 serial data (in accordance
with IEC61162-1 and -2).
When the NX2 module is mounted in the extension slot, several input/output ports are available for the serial NMEA
0183 data.
All serial inputs are setup to use the NMEA protocol and default port parameter setup in accordance with
IEC 61162-1.
By changing the bit rate from 4.8 to 38.4 kbps it complies instead with the NMEA high speed standard
IEC 61162-2.
XDi 96 N can have one NX2 module mounted on the rear plate.
XDi 144/192 N can have one or two NX2 NMEA modules mounted on the rear plate at the same time.

Deif XDi Series Specifications

General

Brand	Deif
Model	XDi Series
Category	Measuring Instruments
Language	English