HP X09 Manuel télécharger pdf (Page 28)

XStream‐PKG‐E™EthernetRFModem–ProductManualv5.x00[2006.02.24]

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

transmit. 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 Configuration

<Serial Interfacing> FL Command is used to

configure software flow control. Hardware flow

control is implemented with the XStream Modem

as the DO2 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).

Disable software

flow control

Enable software

flow control

Default Parameter Value: 0

Number of bytes returned: 1

FT (Flow Control Threshold) Command

AT Command: ATFT

Binary Command: 0x24 (36 decimal)

Parameter Range: 0 – (Receiving modem DO

buffer size minus 0x11 bytes)

Default Parameter Value: Receiving modem DO

Buffer size minus 0x11

Number of bytes returned: 2

Minimum Firmware Version Required: 4.27B

<Serial Interfacing> Set/Read the flow control

threshold. When FT bytes have accumulated in

the DI buffer,

is de-asserted or the XOFF

software flow control character is transmitted.

GD (Receive Good Count) Command

AT Command: ATGD

Binary Command: 0x10 (16 decimal)

Parameter Range: 0 – 0xFFFF

Default Parameter Value: 0

Number of bytes returned: 2

Related Commands: ER (Receive Error Count)

<Diagnostics> Set/Read the count of good

received RF packets. Parameter value is reset to

0 after every reset and is not non-volatile (Value

does not persist in the modem’s memory after a

power-up sequence). Once the “Receive Good

Count” reaches its maximum value (up to

0xFFFF), it remains at its maximum count value

until the maximum count value is manually

changed or the modem is reset.

HP (Hopping Channel) Command

AT Command: ATHP

Binary Command: 0x11 (17 decimal)

Parameter Range: 0 – 6

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: DT (Destination Address),

ID (Modem VID), MK (Address Mask)

<Networking> HP Command is used to set the

modem’s hopping channel number. A channel is

one of three layers of addressing available to the

XStream modem. In order for modems to

communicate with each other, the modems must

have the same channel number since each

network uses a different hopping sequence.

Different channels can be used to prevent

modems in one network from listening to

transmissions of another.

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HP X09 Manuel Page 28

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