USR IOT USR-DR404 - At+Tcplkb; At+Ephy; At+Fudlx

USR-DR404 user manual www.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
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 time.: TCPB timeout, <= 600 (600s), >=0 (0 means no timeout), default is 0.
4.3.4.28. AT+TCPLKB
Function: Query whether TCPB connection is established
Format:
AT+ TCPLKB<CR>
+ok=<sta><CR>< LF ><CR>< LF >
Parameters:
 sta.: returns whether TCOB is established.
 on, established
 off, not established
4.3.4.29. AT+EPHY
Function: Enable/Disable Ethernet interface.
Format:
Setting: AT+ EPHY<CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
After sending this command, enable the Ethernet interface. This command is not saved, that is, Ethernet is still
disabled after restart. If need to save this setting, please use the factory setting command. If need to enable the Ethernet
interface permanently, please use the “AT + FEPHY = on” command.
After the Ethernet interface is closed, the power consumption of the module can be reduced, so it is recommended to
set it to off when the Ethernet interface is not used. The Ethernet interface is enabled by default.
With “AT + FVEW = disable / enable”, set the Ethernet interface to LAN port (disable) or WAN port (enable). This
command will take effect after restoring the factory settings.
4.3.4.30. AT+FUDLX
Function: Enable/Disable RS485
Format:
AT+FUDLX=on/off<CR>
+ok<CR>< LF ><CR>< LF >
This command enables or disables the RS485 interface. By default, RS485 is enabled, and the 485 control pin is RTS.
This command takes effect after restoring factory settings.