Westermo RedFox Series - Manual (Page 903)

Westermo OS Management Guide
Version 4.17.0-0
39.1.3 Packing Algorithm
When data arrives at the serial port of the WeOS unit, one of the following criteria
must be fulfilled before the serial data is encapsulated into a UDP/TCP packet and
sent over the network.
❼ Frame separator character detected: A frame separator character can be
defined. The serial data buffered will be sent over the network when this
character is detected,e.g., ”13” for Carriage return). Any 8-bit ASCII charac-
ter, 0-255, can be used.
❼ Maximum Frame Size Reached: A maximum frame size must be defined.
This is the maximum number of serial data bytes that will be carried in each
UDP/TCP frame. When the maximum number of bytes is buffered, the packet
will be transmitted over the network. Allowed values are in range 1-1460
(bytes). Values above 255 are approximate.
❼ Maximum Frame Delay Reached: A maximum frame delay can be defined.
This is the time, after the last received character in the buffer, the WeOS
unit will wait until the buffered serial data is sent over the network. Allowed
values are in range 1-2550 ms; If maximum frame delay is used with low
data rates (see
section 38.1.1 ), it should be set to at least one ”character
time”.
39.1.4 AT Commands
The AT command interpreter has a limited AT command set. Table 39.1 lists the
supported AT commands and their function.
In addition to the AT commands listed in table 39.1 , WeOS units accept the set
AT commands listed in table 39.2 , however, they only respond ”OK”. Any combi-
nation of these commands and ’+’, ’?’, ’&’,’%’, or ’\’ are valid.
If a specific answer is required user strings can be defined, see section 39.1.5 .
39.1.5 AT Command profile settings
❼ Control settings: The serial command prompt can be set to not echo back
characters (ATE overrides this). The result codes can be set to either nu-
meric verbose (default) mode (ATV overrides this). These settings are stored
➞ 2015 Westermo Teleindustri AB 903