Submitting Alteration; Serial At Command Configuration; Access To At Command Mode; At Command - Hi-Link HLK-RM04 User Manual

Network Protocol：Use tcp or udp Protocol
Network Timeout：Under the server network mode, no data transmission within the timeout period,
the connection will be disconnected. 0 specifies never disconnected.
5.3

Submitting Alteration

Click the button 'Apply' to submit the configuration of the current page. If some parameters of
the network have changed, the submission process may take about 25 seconds. If you only modify
the serial functional configuration, the submission process will be completed soon.
Click the button 'Cancel' to reload the page, the modified configuration will be lost.
6

Serial AT command configuration

6.1

Access to AT command mode

Module in network fault, such as fault allocation situation will automatically exit the
transparent transmission mode, enter AT instruction mode. In any condition, keep ES/RST feet low
level of time but more than Tes and less than Trst, the module will enter AT instruction mode
immediately.
V(ES/RST)
6.2

AT Command

In AT mode, you can configurate the system parameters through the serial port AT instruction.
Instruction format is as follows:
At+[command]=[value]\r
According to the different command, module will return a different return value.
For example："at+remoteip=192.168.11.133\n" set remote ip address as 192.168.11.133.
For example："at+remoteip=？\n" Inquiry remote ip address.
At command is as follows：
Hi-Link (HK)Co.,Ltd
Http://www.hlktech.net
>Tes
<Trst
AT Command
.
sky:hlktech
Tel:0755-23152658-821
t
20