Product manual
9XTend‐PKG‐R™RS‐232/485RFModem–ProductManualv1.2.4
©2005MaxStream,Inc.ConfidentialandProprietary 27
DT (Destination Address) Command
<Networking & Security> DT Command is used to
set/read the networking address of an XTend
Modem. XTend Modems uses three network layers
–Vendor Identification Number (ATID), Channels
(ATHP), and Destination Addresses (ATDT). DT
Command assigns an address to a modem that
enables it to communicate only with other
modems having the same addresses. All modems
that share the same DT parameter can communicate freely with each other.
AT Command: ATDT
Binary Command: 0x00
Parameter Range: 0 – 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Related Commands: HP (Hopping Channel),
ID (Modem VID), MK (Address Mask), MY
(Source Address)
Modems in the same network with a different destination address (than that of the transmitter)
will listen to all transmissions to stay synchronized, but will not send any of the data out their
serial ports.
E0 (Echo Off) Command
AT Command: ATE0
Binary Command: 0x0A (10 decimal)
<Command Mode Options> E0 Command turns
off character echo in AT Command Mode. By
default, echo is off.
E1 (Echo On) Command
AT Command: ATE1
Binary Command: 0x0B (11 decimal)
<Command Mode Options> E1 Command turns
on the character echo in AT Command Mode. Each
typed character will be echoed back to the
terminal when ATE1 is active. E0 is the default.
ER (Receive Error Count) Command
<Diagnostics> Set/Read the number of receive-
errors. The error count records the number of
packets partially received then aborted on a
reception error. This value returns to 0 after a
reset and is not non-volatile (Value does not
persist in the modem’s memory after a power-up
sequence). Once the Receive Error Count reaches
its maximum value (up to 0xFFFF), it remains at its maximum count value until the maximum
count value is explicitly changed or the modem is reset.
AT Command: ATER
Binary Command: 0x0F (15 decimal)
Parameter Range: 0 – 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Related Commands: GD (Receive Good Count)
The ER parameter is not reset by pin, serial port or cyclic sleep modes.
FH (Force Wake-up Initializer) Command
AT Command: ATFH
Binary Command: 0x0D (13 decimal)
<Sleep (Low Power)> FH Command is used to
force a Wake-up Initializer to be sent on the next
transmission. WR (Write) Command does not
need to be issued with FH Command.
Use only with cyclic sleep modes active on remote modems.
FL (Software Flow Control) Command
AT Command: ATFL
Binary Command: 0x07 (7 decimal)
Parameter Range: 0 – 1
Parameter
Value
Configuration
0
Disable software
flow control
1
Enable software
flow control
Default Parameter Value: 0
Number of bytes returned: 1
<Serial Interfacing> FL Command is used to
configure software flow control. Hardware flow
control is implemented with the XTend Modem as
the GP01 pin (
), which regulates when serial
data can be transferred to the modem.
FL Command can be used to allow software flow
control to also be enabled. XON character used is
0x11 (17 decimal). XOFF character used is 0x13
(19 decimal).