HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved.
Page 39 of 229
+IFC – DTE-Modem Local Flow Control
Note:
Flow control is always
hardware bi-directional flow control (both
RTS/CTS
active
)
Note: Hardware flow control
(AT+IFC=2,2)
is not active in command mode.
AT+IFC?
Read command returns active flow control settings.
+IFC: 0,0
AT+IFC=?
Test command returns all supported values of the parameters
<by_te>
and
<by_ta>.
Reference V25ter
3.5.2.2.7.
DTE-Modem Character Framing - +ICF
+ICF - DTE-Modem Character Framing
AT+ICF=<format>
[,<parity>]
Set command defines the asynchronous character framing to be used when
autobauding is disabled.
The HE863 family supoports only the 8 Data, 1 Stop setting.
Parameters:
<format>
- determines the number of bits in the data bits, the presence of a parity
bit, and the number of stop bits in the start-stop frame.
3 - 8 Data, 1 Stop (default)
<parity>
- determines how the parity bit is generated and checked, if present;
setting this subparameter has no meaning.
0 - Odd (not supported)
1 - Even (not supported)
AT+ICF?
Read command returns current settings for subparameters
<format>
and
<parity>
.
The current setting of subparameter
<parity>
will always represented as 0.
AT+ICF=?
Test command returns the ranges of values for the parameter
<format>
.
Reference V25ter
Example
AT+ICF = 3 - 8N1 (default)
AT+ICF=?
+ICF: (3)
3.5.2.2.8.
Data Carrier Detect (DCD) Control - &C
&C - Data Carrier Detect (DCD) Control
AT&C[<n>]
Set command controls the RS232
DCD
output behaviour.
Parameter:
<n>
0 -
DCD
remains
high
always.