Ublox SARA-R4 Series User Manual

SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R09
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18Internet protocol transport layer
Page 197 of 307
18.16.4.5About serial data chunks
A data chunk is the amount of data that SIO recognizes as a single data transmission.
If the baud rate is lower than 115200 b/s the time to receive 255 characters is always calculated with
timings for 115200 b/s.
18.16.4.6Data from the network
The data received from the network is immediately forwarded to the serial interface.
18.16.4.7Congestion timer
Is it also possible to set a congestion timer after which, in case of network congestion, the module exits from
direct link.
The timer range is between 1000 and 720000 ms, the special value 0 (zero) means that the timer is disabled.
By default the congestion timer is set to 60000 (60 s) for both TCP and UDP sockets.
The +UDCONF=8 command can configure the congestion timer.
18.17UDP Direct Link Packet Size configuration +UDCONF=2
+UDCONF=2
SARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - +CME Error
18.17.1Description
Set the packet size for the UDP direct link packet.
18.17.2Syntax
Type Syntax Response Example
Set AT+UDCONF=2,<socket_id>,
<packet_size>
OK AT+UDCONF=2,1,1024
OK
Read AT+UDCONF=2,<socket_id> +UDCONF: 2,<socket_id>,<packet_
size>
OK
AT+UDCONF=2,1
+UDCONF: 2,1,1024
OK
18.17.3Defined values
Parameter Type Description
<socket_id> Number Socket identifier; used when changing the UDP Direct Link settings.
Valid range is 0-6
<packet_size> Number Packet size (in bytes) for UDP direct link; valid range is 100-1472; the factory-
programmed value is 1024 bytes
18.18UDP Direct Link Sending timer configuration
+UDCONF=3
+UDCONF=3
SARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - +CME Error
18.18.1Description
Configures the UDP direct link set sending timer.

Ublox SARA-R4 Series Specifications

General

Brand	Ublox
Model	SARA-R4 Series
Category	Control Unit
Language	English