INTERFACEMODE
Sets receive or transmit modes for ports
|
Platform: |
OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2 |
This command is used to specify what type of data a particular port on the receiver can transmit and receive. The receive type tells the receiver what type of data to accept on the specified port. The transmit type tells the receiver what kind of data it can generate. For example, to accept RTCMV3 differential corrections, set the receive type on the port to RTCMV3.
It is also possible to disable or enable the generation or transmission of command responses for a particular port. Disabling of responses is important for applications where data is required in a specific form and the introduction of extra bytes may cause problems, i.e., RTCA, RTCM, RTCMV3 or CMR. Disabling a port prompt is also useful when the port is connected to a modem or other device that responds with data the RECEIVER does not recognize.
For applications running in specific interface modes, see Table: Serial Port Interface Modes, set the appropriate interface modes before sending or receiving corrections. It is important that the port interface mode matches the data being received on that port. Mismatches between the interface mode and received data can result in CPU overloads.
When INTERFACEMODE port NONE NONE OFF is set, the specified port is disabled from interpreting any input or output data. Therefore, no commands or differential corrections are decoded by the specified port. When GENERIC is set for a port, it is also disabled but data can be passed through the disabled port and be output from an alternative port using the pass-through logs PASSCOM, PASSAUX and PASSUSB. See PASSCOM, PASSAUX, PASSUSB, PASSICOM, PASSNCOM for details on these logs along with Pass-Through Logging for information about pass-through logging. See also the SERIALCONFIG command.If you intend to use the SERIALCONFIG command, ensure you do so before the INTERFACEMODE command on each port. The SERIALCONFIG command can remove the INTERFACEMODE command setting if the baud rate is changed after the interface mode is set. You should also turn break detection off using the SERIALCONFIG command to stop the port from resetting because it is interpreting incoming bits as a break command. If such a reset happens, the Interface mode will be set back to the default NOVATEL mode for both input and output.
SPAN Systems
The INTERFACEMODE of the receiver is also configured for the serial port dedicated to the IMU. This mode changes automatically upon sending a CONNECTIMU command and the change is reflected when logging this command. This is normal operation.
When the CONNECTIMU command is used to configure the IMU connected to the receiver, the correct interface mode for the IMU port is automatically set. The IMU port should not be altered using the INTERFACEMODE command in normal operation. Doing so may result in the loss of IMU communication.
Message ID: 3
Abbreviated ASCII Syntax:
INTERFACEMODE [port] rxtype txtype [responses]
Factory Default:
INTERFACEMODE COM1 NOVATEL NOVATEL ON
INTERFACEMODE COM2 NOVATEL NOVATEL ON
INTERFACEMODE COM3 NOVATEL NOVATEL ON
INTERFACEMODE AUX NOVATEL NOVATEL ON
INTERFACEMODE USB1 NOVATEL NOVATEL ON
INTERFACEMODE USB2 NOVATEL NOVATEL ON
INTERFACEMODE USB3 NOVATEL NOVATEL ON
INTERFACEMODE ICOM1 NOVATEL NOVATEL ON
INTERFACEMODE ICOM2 NOVATEL NOVATEL ON
INTERFACEMODE ICOM3 NOVATEL NOVATEL ON
INTERFACEMODE ICOM4 NOVATEL NOVATEL ON
INTERFACEMODE ICOM5 NOVATEL NOVATEL ON
INTERFACEMODE ICOM6 NOVATEL NOVATEL ON
INTERFACEMODE ICOM7 NOVATEL NOVATEL ON
INTERFACEMODE NCOM1 RTCMV3 NONE OFF
INTERFACEMODE NCOM2 RTCMV3 NONE OFF
INTERFACEMODE NCOM3 RTCMV3 NONE OFF
INTERFACEMODE CCOM1 NOVATELBINARY NOVATELBINARY ON
INTERFACEMODE CCOM2 NOVATELBINARY NOVATELBINARY ON
INTERFACEMODE CCOM3 AUTO NOVATEL OFF
INTERFACEMODE CCOM4 AUTO NOVATEL OFF
INTERFACEMODE CCOM5 AUTO NOVATEL OFF
INTERFACEMODE CCOM6 AUTO NOVATEL OFF
INTERFACEMODE SCOM1 NOVATEL NOVATEL ON
INTERFACEMODE SCOM2 NOVATEL NOVATEL ON
INTERFACEMODE SCOM3 NOVATEL NOVATEL ON
INTERFACEMODE SCOM4 NOVATEL NOVATEL ON
ASCII Example 1:
INTERFACEMODE COM1 RTCMV3 NOVATEL ON
ASCII Example 2:
INTERFACEMODE COM2 MRTCA NONE
Are NovAtel receivers compatible with others on the market?
All GNSS receivers output two solutions: position and time. The manner in which they output them makes each receiver unique. Most geodetic and survey grade receivers output the position in electronic form (typically RS-232), which makes them compatible with most computers and data loggers. All NovAtel receivers have this ability. However, each manufacturer has a unique way of formatting the messages. A NovAtel receiver is not directly compatible with a Trimble or Ashtech receiver (which are also incompatible with each other) unless everyone uses a standard data format.
However, there are several standard data formats available. For position and navigation output there is the NMEA format. Real-time differential corrections use RTCM or RTCA format. For receiver code and phase data RINEX format is often used. NovAtel and all other major manufacturers support these formats and can work together using them. The NovAtel format measurement logs can be converted to RINEX using the utilities provided in NovAtel Convert.
|
Field |
Field Type |
ASCII Value |
Binary Value |
Description |
Format |
Binary Bytes |
Binary Offset |
|
1 |
Command header |
- |
- |
INTERFACEMODE header This field contains the command name for abbreviated ASCII or the message header for ASCII (see page 1) or Binary (see page 1). |
- |
H |
0 |
|
2 |
port |
Serial port identifier (default = THISPORT) Note: On the SMART2, the INTERFACEMODE command cannot be used with CCOM ports. |
Enum |
4 |
H |
||
|
3 |
rxtype |
Receive interface mode |
Enum |
4 |
H+4 |
||
|
4 |
txtype |
Transmit interface mode |
Enum |
4 |
H+8 |
||
|
5 |
responses |
OFF |
0 |
Turn response generation off |
Enum |
4 |
H+12 |
|
ON |
1 |
Turn response generation on (default) |
|||||
|
Binary Value |
ASCII Value |
Description |
|
0 |
NONE |
The port accepts/generates nothing. The port is disabled. |
|
1 |
NOVATEL |
The port accepts/generates NovAtel commands and logs. |
|
2 |
RTCM |
The port accepts/generates RTCM corrections. |
|
3 |
RTCA |
The port accepts/generates RTCA corrections. |
|
4 |
CMR |
The port accepts/generates CMR corrections. |
|
5 |
Reserved |
|
|
6 |
Reserved |
|
|
7 |
IMU |
This port supports communication with a NovAtel supported IMU. |
|
8 |
RTCMNOCR |
When RTCMNOCR is used as the txtype, the port generates RTCM corrections without the CR/LF appended. When RTCMNOCR is used as the rxtype, the port accepts RTCM corrections with or without the CR/LF appended. |
|
9 |
Reserved |
|
|
10 |
TCOM1 |
INTERFACEMODE tunnel modes. To configure a full duplex tunnel, configure the baud rate on each port. Once a tunnel is established, the baud rate does not change. Special characters, such as a BREAK condition, do not route across the tunnel transparently and the serial port is altered, see the SERIALCONFIG command. Only serial ports may be in a tunnel configuration: COM1, COM2, COM3 or AUX may be used. For example, configure a tunnel at 115200 bps between COM1 and AUX: SERIALCONFIG AUX 115200 SERIALCONFIG COM1 115200 INTERFACEMODE AUX TCOM1 NONE OFF INTERFACEMODE COM1 TAUX NONE OFF The tunnel is fully configured to receive/transmit at a baud rate of 115200 bps. |
|
11 |
TCOM2 |
|
|
12 |
TCOM3 |
|
|
13 |
TAUX 1 |
|
|
14 |
RTCMV3 |
The port accepts/generates RTCM Version 3.0 corrections. |
|
15 |
NOVATELBINARY |
The port only accepts/generates binary messages. If an ASCII command is entered when the mode is set to binary only, the command is ignored. Only properly formatted binary messages are responded to and the response is a binary message. |
|
16-17 |
Reserved |
|
|
18 |
GENERIC |
The port accepts/generates nothing. The SEND command or SENDHEX command from another port generate data on this port. Any incoming data on this port can be seen with PASSCOM logs on another port, see PASSCOM, PASSAUX, PASSUSB, PASSICOM, PASSNCOM log. |
|
19 |
IMARIMU |
This port supports communication with an iMAR IMU. |
|
20 |
MRTCA |
The port accepts/generates Modified Radio Technical Commission for Aeronautics (MRTCA) corrections. |
|
21-22 |
Reserved |
|
|
23 |
KVHIMU |
This port supports communication with a KVH CG5100 IMU. |
|
24-26 |
Reserved |
|
|
27 |
AUTO |
For auto-detecting different RTK correction formats and incoming baud rate (over serial ports). The change of baud rate will not appear when SERIALCONFIG is logged as this shows the saved baud rate for that port. |
|
28-34 |
Reserved |
|
|
35 |
NOVATELX |
The port accepts/generates NOVATELX corrections. |
|
36-40 |
Reserved |
|
|
41 |
KVH1750IMU |
The port supports communication with an IMU-KVH1750 or IMU-P1750 IMU. |
|
42 |
VERIPOS |
This port supports Veripos, TerraStar and Oceanix PPP corrections. |
|
43-45 |
Reserved |
|
|
46 |
TCCOM1 |
CCOM1 Tunnel |
|
47 |
TCCOM2 |
CCOM2 Tunnel |
|
48 |
TCCOM3 |
CCOM3 Tunnel |
|
49 |
NOVATELMINBINARY |
NovAtel binary message with a minimal header. |
|
50 |
TCCOM4 |
CCOM4 Tunnel |
|
51 |
TCCOM5 |
CCOM5 Tunnel |
|
52 |
TCCOM6 |
CCOM6 Tunnel |
|
53-57 |
Reserved |
|
|
60 |
TSCOM1 |
SCOM1 Tunnel |
|
61 |
TSCOM2 |
SCOM2 Tunnel |
|
62 |
TSCOM3 |
SCOM3 Tunnel |
|
63 |
TSCOM4 |
SCOM4 Tunnel |
|
64 |
LUA |
Lua stdin/stdout/stderr. Use the LUA PROMPT command to set this Interface Mode. |
|
65 |
HONEYWELLIMU |
This port supports communication with a Honeywell HG4930 IMU |