CSE-H20 User's Manual Ver. 1.8
Sollae Systems Co., Ltd.
- 29 -
http://www.sollae.co.kr
7
ATC Mode
7.1
Overview
CSE-H20 can be controlled by AT commands in ATC mode. For example, the peer host IP
address can be set by AT+PRIP command and connect to the host by ATD command.
Therefore, CSE-H20 communicates several hosts alternatively.
And also, it provides passive connection function by ATA command.
7.1.1
AT command format
AT commands start with AT, and end <CR>.
AT command format is followed.
AT
Command
<CR>(0x0d)
The response code to AT command is followed.
<CR>(0x0d)
<LF>(0x0a)
Response message
<CR>(0x0d)
<LF>(0x0a)
Response Message
When ATV1 (initial setting) When ATV0
Description
OK
0
command OK
CONNECT
1
TCP connected
NO CARRIER
3
TCP disconnected
ERROR
4
Command error
Set value
Set value
When query set value
(example: AT+PRIIP?)
7.2
Basic AT Command Set (Example: ATA, ATD etc.)
Command
Function
Description
A
passive connection
Listen connection (host → CSE-H20 connection)
D
active connection
Connecting to host form CSE-H20
E
echo
Echo (E0 – no echo, E1-echo)
H
off-hook
disconnection
I
Info
Output CSE-H20 related-information
ATI3: the firmware version
ATI7: MAC address
O
Online
To online mode
