Mitsubishi Electric a Serie Manuel page 54

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2 Simple Application Controllers
Table 8.5: AT Command for GSM Modem
Setting Item
Enable command echo
Set number of ring before
automatically answering the call
Set circuit data set ready (DSR)
function mode
Set TE-TA local data flow control
Report mobile equipment error
Set fixed local rate
Set circuit data carrier detect
(DCD) function mode
Select bearer service type
Store current parameter to use
defined profile
*1 In Siemens M20T case, these settings are not necessary because they are default
settings. If using other GSM Modem, maybe these settings are necessary.
b) Timing to initialize the modem during system startup
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In the 2 series, there is a function to delay the transmission of the modem command (AT
command) to initialize the modem from the main unit at start up. The delay can range from
0 - 10 seconds. This command can be useful to ensure the AT command is correctly
transmitted when the
Further information for the modem operation can be found in the
α
and the
*1
*1
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2 series start up is faster than the modem start up.
Software Manual.
Set content
Echo mode OFF
Enable automatic answering on the ring
twice
DSR always ON
• Specifies the method which will be used
by TE when data is received from TA:
None
• Specifies the method which will be used
by TA when data is received from TE:
None
Enable result code and use numeric value
Baud Rate: 9600 bps
DCD line is ON only in the presence of
Data Carrier
9600 bps (V.32), asynchronous modem,
non-transparent
The user profile is stored in non-volatile
memory
AL2-GSM-CAB 8
Example Setting
M20T
E0
S0=2
&S0
+IFC=0,0
+CMEE=1
+IPR=9600
&C1
+CBST=7,0,1
&W
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2 Programming Manual
ENG-42