WCM802/900
20
JUN
2005
PAGE
23
CT (Command Mode Timeout) Command
<Command Mode Options> CT Command sets
the amount of time before AT Command Mode
terminates automatically. After a CT time of
inactivity, the module exits AT Command Mode
and returns to Idle Mode. AT Command Mode can
also be exited manually using CN (Exit AT
Command Mode) Command.
DT (Destination Address) Command
<Networking> DT Command is used to set the
networking address of an WCM802 / WCM900
Module. WCM802 / WCM900 Modules uses three
network layers –Vendor Identification Number
(ATID), Channels (ATHP), and Destination
Addresses (ATDT). DT Command assigns an
address to a module that enables it to
communicate only with other modules having the
same addresses. All modules that share the same
Destination Address can communicate freely with
each other. Modules 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
<Command Mode Options> E0 Command turns
off character echo in AT Command Mode. By
default, echo is off.
E1 (Echo On) Command
<Command Mode Options> E1 Command turns
on the 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 receive-error. 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
module’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 module is reset.
FH (Force Wake-up Initializer) Command
<Sleep (Low Power)> FH Command is used to
force a Wake-up Initializer to be sent on the next
transmit. WR (Write) Command does not need to
be issued with FH Command.
Use only with cyclic sleep modes active on remote modules.
AT Command: ATCT
Binary Command: 0x06 (6 decimal)
Parameter Range: 0x02 – 0xFFFF
[x
100
milliseconds]
Default Parameter Value: 0xC8 (200 decimal,
20 seconds)
Number of bytes returned: 2
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
(Module VID), MK (Address Mask)
AT Command: ATE0
Binary Command: 0x0A (10 decimal)
AT Command: ATE1
Binary Command: 0x0B (11 decimal)
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)
AT Command: ATFH
Binary Command: 0x0D (13 decimal)
