Raymarine NMEA Multiplexer Spezifikationen PDF herunterladen (Seite 35)

h: Heading translation:

0 = off

1 = on

v: Velocity translation:

0 = off

1 = on

t: Priority Timeout (in seconds):

0 = 1

1 = 2

2 = 3

3 = 5

4 = 10

5 = 30

f: Filter mode:

0 = Pass sentences that are not present in the filter list

1 = Block sentences that are not present in the filter list

r: Reverse heading. When enabled (1), a new HDT sentence is generated from an incoming

HDT sentence with the heading reversed by 180 degrees. Use the Sentence Filter to route

the original and new HDT sentences to different outputs.

The ‘s’ field will always return a 0 or 1 in response to a CFQ sentence.

1) The speed setting is ignored on multiplexers without RS-232 serial interface.

2) By default, the multiplexer checks the checksum of every incoming sentence. When a

checksum error is found, the sentence is rejected. This check can be enabled or disabled with

$PSMDCF,9. When the check is disabled, the multiplexer passes sentences with a checksum

error unprocessed.

The response of the CFQ sentence shows whether the check is enabled or disabled: when the

CF response has a checksum, it is enabled. Note that $PSMDCF,9 is a toggle that enables or

disables the checksum check. It does not change the baud rate and a CF response will always

show the normal baud rate setting (No. 0..3).

CFQ – Request current configuration

This sentence requests the current configuration settings from the multiplexer.

Format: $PSMDCFQ[*hh]<CR><LF>

The multiplexer responds with a CF sentence. When the response contains a checksum, the

checksum checking is enabled and the multiplexer rejects sentences with a checksum error. When

the CF response shows no checksum, the multiplexer passes sentences that contain a checksum

error.

CN - Channel Number indicator

This is sentence is output by the multiplexer when Channel Numbers are enabled with the CF

sentence (n = 1). It precedes an NMEA sentence on the host interface to indicate through which

input channel the sentence was received.

Format: $PSMDCN,x*hh<CR><LF>

x: Channel number 1,2,3 or 4

DR – Default Route

This sentence specifies the default route from the NMEA inputs to the NMEA outputs and from the

host interface to the NMEA outputs. Any route set by the FL sentence overrides the standard route.

Format: $PSMDDR,xxxxx,a,yyyyy,b[*hh]<CR><LF>

xxxxx: Input field for NMEA Out1. Each ‘x’ represents an input, numbered from 1 to 5 from left to

right. Input 5 is not a real input but the source of NMEA sentences generated from

conversions. When ‘1’, the input is routed to output 1. When ‘0’, the input is not routed to

output 1.

a: Host data to NMEA Out1:

0: Host data is not routed

1: Host data is routed

2: Host data is routed and overrides data from the inputs. A time out mechanism will

route data from the inputs when no data from the host is received.

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