XIB-E【PDF 27/64 页】BOARD INTERFACE ETHERNET

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LH (Wake-up Initializer Timer) Command

AT Command: ATLH

Binary Command: 0x0C (12 decimal)

<Sleep (Low Power)> Set/Read the amount of

time during which the RF initializer is sent. When

receiving modules are put into Cyclic Sleep Mode,

they power-down after a period of inactivity

[specified by ST (Time before Sleep) Command]

and will periodically awaken and listen for

transmitted data. In order for the receiving

modules to remain awake, they must detect

~35ms of the wake-up initializer.

Parameter Range: 0 0xFF

[x 100 milliseconds]

Default Parameter Value: 1

Number of bytes returned: 1

Related Commands: HT (Time before Wake-up

Initializer), SM (Sleep Mode), ST (Time before

Sleep)

LH Command must be used whenever a receiver is operating in Cyclic Sleep Mode. This lengthens

the Wake-up Initializer to a specific amount of time (in tenths of a second). The Wake-up

Initializer Time must be longer than the cyclic sleep time that is determined by SM (Sleep Mode)

Command. If the wake-up initializer time were less than the Cyclic Sleep interval, the connection

would be at risk of missing the wake-up initializer transmission.

Refer to the figures in the Sleep Mode sections [p13] to view correct and incorrect configuration

diagrams. The images help visualize the importance that the LH value be greater than the SM cyclic

sleep value.

MD (RF Mode) Command

AT Command: ATMD

Binary Command: 0x32 (50 decimal)

Parameter Range: 0 4

Parameter

Configuration

Peer-to-Peer

(transparent operation)

Multi-Stream Base

Multi-Stream Remote

Repeater & End Node

End Node

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: CB (Connection Duration

Timeout), CE (Connection Inactivity Timeout),

CM (Connection Message), DC (Disconnect)

Minimum Firmware Version Required: 4.30

<Networking & Security> The MD command is

used to select/read the RF Mode (Peer-to-peer,

Multi-Stream or Repeater Modes) of the module.

Multi-Streaming Mode enables exclusive

connections in point-to-multipoint networks.

Refer to the Multi-Streaming Mode section [p43]

for more information regarding how these

parameter values affect other parameter values.

Repeater Mode enables longer range via an

intermediary module. When MD=3, the module

will act as a store and forward repeater. Any

packets not addressed to this node will be

repeated. A Repeater End Node (MD=4) handles

repeated messages, but will not forward the data

over-the-air. Refer to the Repeater Mode section

[p38] for more information.

MK (Address Mask) Command

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<Networking & Security> MK Command is used

to set/read the address mask of the module.

All data packets contain the destination address

(DT Parameter) of the transmitting module.

When an RF data packet is received, the

transmitters destination address is logically

ANDed (bitwise) with the Address Mask of the

receiver. The resulting value must match the

destination address or the address mask of the

receiver for the packet to be received and sent

out the module DO serial port. If the ANDed

value does not match either the destination address or the address mask of the receiver, the

packet is discarded. (All 0 values are treated as irrelevant values and are ignored.)

AT Command: ATMK

Binary Command: 0x12 (18 decimal)

Parameter Range: 0 0xFFFF

Default Parameter Value: 0xFFFF

(Destination address (DT parameter) of the

transmitting module must exactly match the

destination address of the receiving module.)

Number of bytes returned: 2

Related Commands: DT (Destination Address),

HP (Hopping Channel), ID (Module VID), MY

(Source Address)

Refer to the Addressing Options section [p36] for more information.

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