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Part 1 – AT Commands for All Universal IP Devices Chapter 1 – General AT Commands for All Universal IP Devices
Universal IP AT Commands Reference Guide (Document S000457K) 14
#LEGACYMODE – Legacy Mode Enable/Disable
About Legacy Mode:
Note: This command is for all devices except the SocketEthernet IP (MT100SEM-IP)
Legacy mode allows for smoother transition to TCP/IP based connectivity from standard analog
interface connections.
When #LEGACYMODE=1, the stack will be in pseudo legacy mode where the commands &S,
&D, &C, A, D, S0, E, V operate independently of the stack. The commands will be saved to a
different NVRAM location and will not affect the IP stack once legacy mode has been exited.
Once in legacy mode, the user can configure the #TCP values and issue an ATD command to
make a connection to the remote host. If necessary, the user can also issue
ATDxxxxxxxxxxxxppppp where x is the decimal address and ppppp is the remote port. The stack
will perform the physical connection and present the user with the proper messages:
NO CARRIER
NO ANSWER
CONNECT
OK
ERROR
Description: If legacy mode is enabled, the AT interface tries to behave like a legacy analog modem. ATD and
ATA will function on the TCP stack instead of the physical connection. Responses will behave like
that of an analog modem.
Syntax: Set Value: AT#LEGACYMODE=1
View Values: AT#LEGACYMODE?
Values: 0 Disable legacy mode
1 Enable legacy mode
Default: 0
#RESET – Reset Main Processor or Internal Modem
Description: This command will force a reset on the Stack and internal radio or just the internal radio.
Syntax: AT#RESET =<value>
Values: 0 Reset the Stack and internal modem
1 Reset the internal modem only.
Note: This value is not valid for the SocketEthernet IP (MT100SEM-IP) and the
SocketWireless Wi-Fi (MT810SWM-IP)
Example: AT#RESET=0
Note: After issuing AT#RESET, it can take up to 45 seconds before the MT810SWM-IP is ready to
accept AT Commands. When configuring the MT810SWM-IP using security mode WPA or
WPA2, the bootup time will take longer.
#SHIELDCHAR – Configure the Shielding Character for DLEMODE
Description: This parameter defines the shield character for the clients that use shielding (also known as DLE
shielding with regards to UIP).
Note: This command is for all devices except the SocketWireless Wi-Fi (MT810SWM-IP)
Syntax: AT#SHIELDCHAR=[<parameter1>]
AT#SHIELDCHAR?
Values: 0-255 (an integer value between 0 and 255)
Responses: \r\n#SHIELDCHAR: VALUE\r\n
\r\nOK\r\n
\r\nERROR\r\n
Examples:
send: AT#SHIELDCHAR=20\r
reply: \r\nOK\r\n
send: AT#SHIELDCHAR?\r
reply: \r\n#SHIELDCHAR: 20\r\n
reply: \r\nOK\r\n