Simrad HS80/MX575C, User Manual

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Installation | HS80/MX575C User Manual
Recommendations for connecting to other devices
When interfacing to other devices, ensure the transmit data output from the HS80/MX575C is
connected to the data input of the other device. The signal grounds must also be connected.
Since RS-422 is a balanced signal with positive and negative signals referenced to ground,
ensure you maintain the correct polarity. For example, when connecting the transmit data
output positive signal to the receive line of the other device, it should be connected to the
receive positive terminal. The negative transmit data signal from the HS80/MX575C is then
connected to the receive data negative input of the other device.
There is likely little reason to connect the receive data input of the HS80/MX575C to another
device unless it is able to send configuration commands to the HS80/MX575C. Since the
HS80/MX575C uses proprietary NMEA 0183 commands for control over its configuration, the
vast majority of electronics will not be able to configure its settings unless the other device
has a terminal setting where you can manually issue commands.
NMEA 2000 port
To use the HS80 for NMEA 2000 interface, you need to use the Serial-to-NMEA 2000 adapter
(P/N 710-0113-000#, see Figure 2-8). This adapter is optional item for the MX575C model.
Insert the 18-pin connector of the adapter into the male end of the 18-pin connector on the
HS80 by aligning the keys. You can then attach the adapter to the unit using the supplied
screws (machine, 8-32, ½”, PPHC, SS) and washer (washer, flat, #8, SS). The 5-pin male Micro-C
connector connects to your NMEA 2000 drop cable.
Micro-C connector
18-pin Female
connector
Figure 2-8: Serial-to-NMEA 2000 adapter
The MX575C DGPS compass model is supplied with 15 meter interface cable for NMEA 0183
interface connection. An optional 30-meter NMEA 0183 interface cable can be ordered
separately. The NMEA 2000 interface adapter is another option for the MX575C.
¼ Note:
The serial-to-NMEA 2000 adapter is not an IMO requirement and may not be used in
such an application.
The next section shows the requested PGNs with the HS80/MX575C in NMEA 2000 mode.
Received messages based on a request
PG No.
(PGN)
Description Level
Default Update
Rate (msec)
Freq (Hz)
059392 ISO Acknowledgement
Used to acknowledge the status
of certain requests addressed to a
specific ECU. B On Request On Request
059904 ISO Request
Request the transmission of a specific
PGN, addressed or broadcast. B On Request On Request
060928 ISO Address Claim
Used to identify to other ECUs the
address claimed by an ECU. B On Request On Request