RoyalTek rgm-3000 用户手册

 

16 

message section for <data>…<data> 

definition 

3

CKSUM is a two-hex character checksum 

as defined in the NMEA specification . Use 

of checksums is required on all input 

messages. 

4

Each message is terminated by using 

Carriage Return (CR) Line Feed (LF) which 

is \r\n which is hex 0D 0A. Because \r\n are 

not printable ASCII characters , they are 

omitted from the example strings, but must 

be sent to terminate the message and cause 

the receiver to process that input message. 

 

Note – All fields in all proprietary NMEA 

messages are required, none are exceptional. 

All NMEA messages are comma delimited 

Set Serial Port 

100 

Set PORT A Parameters and protocol 

Navigation Initialization 

101 

Parameters required for start using X/Y/Z 

Set DGPS Port 

102 

Set PORT B parameters for DGPS input 

Query / Rate Control 

103 

Query standard NMEA message and/or set output rate 

LLA  Navigation    
Initialization 

104 

Parameters required for start using Lat/Lon/Alt1 

Development Data On/Off 

105 

Development Data messages On/Off 

Input coordinates must be WGS84. 

This command message is used to set the 

protocol (SiRF Binary or NMEA) and/or the 

communication parameters (baud , data bits, 

stop bits, parity). Generally, this command is 

used to switch the module back to SiRF 

Binary protocol mode where a more 

extensive command message set is 

available. When a valid message is received, 

the parameters are stored in battery-backed 

SRAM and then the Evaluation Unit restarts 

using the saved parameters. 

Table 8 contains the input values for the 

following example:Switch to SIRF Binary 

protocol at 9600,8,N,1 

$PSRF100,0,9600,8,1,0*0C 

Set Serial Port Data Format 

Message ID 

$PSRF100 

 

PSRF100 protocol header 

Protocol 

0 

 

0=SiRF Binary, 1=NMEA 

Baud 9600 

 

4800,9600,19200,38400 

Data Bits 

8 

 

8,71 

Stop Bits 

1 

 

0,1 

Parity 0 

 

0=None 

,1=Odd,2=Even 

Checksum *0C 

 

 

<CR><LF> 

 

 

End of message termination 

 

1

SiRF protocol is only valid for 8data bits, 1 stop bit,   

and no parity. 

This command is used to initialize the 

module for a warm start, which provide 

current position (in X, Y, Z coordinates),