Siemens AT Command Set Cellular Engines Wireless Modules MC35 Manual De Usuario
AT Command Set
MC35_ATC_01_V04.00
Page 114 of 238
02.04.2002
4.41 AT+CREG Network registration
Test command
AT+CREG=?
Response
+CREG:
(list of supported <n>s) OK
Parameter
See write command
Read command
AT+CREG?
ME returns the URC presentation mode <n> and an integer <stat> that shows
the registration status of the ME. The location information elements <lac> and
<ci> are returned only when <n>=2 and ME is registered to the network.
the registration status of the ME. The location information elements <lac> and
<ci> are returned only when <n>=2 and ME is registered to the network.
Response
+CREG: <n>,<stat>[,<lac>,<ci>]
OK
or if an error occurs which is related to ME functionality:
+CME ERROR: <err> (for error text see Chapter 9.1.1. or set AT+CMEE=2)
OK
or if an error occurs which is related to ME functionality:
+CME ERROR: <err> (for error text see Chapter 9.1.1. or set AT+CMEE=2)
Write command
AT+CREG=
[<n>]
[<n>]
Use the write command to select the type of URC. Two types of URCs are
available:
+CREG: <stat> if <n>=1. To be issued when the ME's network registration
status changes
or
+CREG: <stat>[,<lac>,<ci>] if <n>=2. To be issued when ME's network regis-
tration or network cell changes.
available:
+CREG: <stat> if <n>=1. To be issued when the ME's network registration
status changes
or
+CREG: <stat>[,<lac>,<ci>] if <n>=2. To be issued when ME's network regis-
tration or network cell changes.
Response
OK
or if an error occurs which is related to ME functionality:
+CME ERROR: <err>
<err>
or if an error occurs which is related to ME functionality:
+CME ERROR: <err>
<err>
256
If <n> = 0: Attempt to set once again <n>=0 causes error
code 256.
If <n> > 0: Attempt to activate a URC mode that is already
active is acknowledged with OK.
code 256.
If <n> > 0: Attempt to activate a URC mode that is already
active is acknowledged with OK.
Parameter
<n >
0
disable URCs
1
enable URC +CREG:<stat> to report status of network reg-
istration
istration
2
enable URC +CREG:<stat>[,<lac>,<ci>] to report status of
network registration including location information. Please
note that optional parameters will not be displayed during
call.
network registration including location information. Please
note that optional parameters will not be displayed during
call.
<stat>
0
not registered, ME is currently not searching for new op-
erator
erator
1
registered, home network
2
not registered, but ME is currently searching for a new op-
erator
erator
3
registration denied
4
unknown
5
registered, roaming
<lac>
string type; two byte location area code in hexadecimal format
(e.g. "00C3" equals 193 in decimal)
(e.g. "00C3" equals 193 in decimal)
<ci>
string type; two byte cell ID in hexadecimal format