User guide

ALEOS 4.2.3 User Guide
230 20080616
UDP
Table E-9: Common: UDP
Command Description
MD Default power-up mode for the serial port: When the device is power-cycled,
the serial port enters the mode specified by this command after 5 seconds. On
startup, typing ATMD0 within 5 seconds changes the mode to normal (AT
command) mode. See also S53 to set the port for UDP.
• hh (hex byte)=00 : normal
• hh=01 : SLIP
• hh=02 : PPP
• hh=03 : UDP
• hh=04 : TCP
• hh=07 : PassThru
• hh=0F : MP MDT
• hh=13 : Modbus ASCII
• hh=23 : Modbus RTU (Binary)
• hh=33 : BSAP
• hh=63 : Variable Modbus
• hh=73 : Reliable UDP
• hh=83 : UDP Multicast
S82 Enables UDP auto answer (half-open) mode.
• n=0 : Normal mode
• n=2 : Enable UDP auto answer mode.
S83 Set or query UDP auto answer idle time-out. If no data is sent or received
before the time-out occurs, the current UDP session will be terminated. While
a session is active, packets from other IP addresses will be discarded (unless
*UALL is set).
• n=0 : No idle time-out (Default).
• n=1 - 255 : Time-out in seconds.
UDPLAST If enabled, sets S53 to the last accepted IP address through UDP auto
answer. This can be used in conjunction with MD3 so that when there is no
UDP session, new ethernet host data will cause a connection to be restored to
the last IP accepted through UDP auto answer.
• n=0 : Does not change S53 setting. (Default).
• n=1 : Set S53 to the last accepted IP.
AIP Allow IP address.
• n=0 : Allow only the IP address specified in S53 to connect when UDP
auto answer is enabled (S82=2).
• n=1 : Allow any incoming IP address to connect when UDP auto answer
is enabled (S82=2).
Always subject to any Friends filters that may be defined.