CSE-H21 User’s Manual Ver. 1.2
Sollae Systems Co., Ltd.
- 26 -
http://www.sollae.co.kr
4
System Management
4.1
Operation Mode
CSE-H21 can operate in one of two modes (normal and ISP modes). Normal mode is ordinary
data communication mode; and ISP mode is used to download CSE-H21 firmware through the
Ethernet port.
4.1.1
normal mode
The normal mode is an operation mode that CSE-H21‟s works for normal purposes. If CSE-H21
boots up without any other treatment, it works in the normal mode.
Please refer to the 5. Normal Mode.
4.1.2
Serial Configuration Mode
If you press the switch on the side of the body in the normal mode for 20ms ~ 1s, it works in
the Serial Configuration Mode. You can set the environmental variables through the COM1 port in
this mode.
4.1.3
ISP Mode
If you press the switch on the side of the body in the normal mode over 1 second, it works in
the ISP mode.
You can download new firmware to CSE-H21 with hotflash program that is a TFTP client
through the Ethernet.
4.1.4
Comparison between two modes
The following is a comparison between the normal mode and the ISP mode.
Table 4-1 Operation Mode
Mode
How to initiate
Description
Baudrate
normal
Power on CSE-H21 without pressing
the ISP button
Normal data
communication
mode
T2S, ATC, COD, U2S
the value that
user set
Serial
Config
uratio
n
Pressing the ISP button for 20ms~1s.
Configuring CSE-
H21 through COM1
115200bps/N/
8/1
ISP
Pressing the ISP button over 1
second
Firmware download
mode
115200bps/N/
8/1