ICP DAS USA M-7026, User Manual

Page: 179 / 185

M-7026
M-7026 User Manual Rev: 1.5 Date: 2016/03/10
179
5. Appendix
5.1 INIT Mode
Each I-7000 and M-7000 module contains a built-in EEPROM memory that
can be used to store configuration information, such as the module address,
the Type Code, and the Baud Rate, etc. Occasionally, the configuration of a
module may be forgotten and there may be no visual indications of the
configuration of the module. It is difficult to communicate with the module when
the configuration of the module is unknown. To help avoid this problem, the
I-7000 and M-7000 series has a special mode called the
“INIT mode”. When
the module is powered on in
“INIT mode” the configuration of the module is
reset to the default settings shown below, allowing it to be operated as normal.
1.
Address: 00
2. Baud Rate: 9600 bps
3. No checksum
4.
Protocol: DCON
The configuration information stored in the EEPROM is not changed and can
be read by sending the $AA2(CR) command (see Section 2.10) at 9600 bps.
There are also other commands that require the module to set to INIT mode
before being used. They are:
1.
%AANNTTCCFF, which is used when changing the Baud Rate and the
checksum settings. See Section 2.1 for details.
2.
$AAPN, see Section 2.34 for details.
Originally, INIT mode was accessed by connecting the INIT* terminal to the
GND terminal. Newer I-7000 and M-7000 modules include an INIT switch
located on the rear of the module to allow easier access to INIT mode. For
these modules, INIT mode is accessed by sliding the INIT switch to the Init
position, as shown below.