B&B Electronics ZP9D-115RM-LR Especificaciones descargar pdf (Pagina 36)

36 Manual Documentation Number: ZP9D-115RM-LR-0812

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HP (Hopping Channel)

Command

<Networking & Security> The

HP command is used to

set/read the RF module's

hopping channel number. A

channel is one of three layers of

filtration available to the

module.

In order for modules to

communicate with each other, the modules must have the same channel number

since each channel uses a different hopping sequence. Different channels can be

used to prevent modules in one network from listening to transmissions of another.

HT (Time before Wake-up

Initializer) Command

<Sleep (Low Power)> The HT

command is used to set/read

the time of inactivity (no serial or

data is sent or received) before

a wake-up initializer is sent by a

TX (transmitting) RF module.

The HT parameter should be set

shorter than inactivity timeout

[ST Command] time of any RX

(receiving) modules operating in

Cyclic Sleep (SM=4-8). The

wake-up initializer sent by the TX module instructs all RX modules to remain awake to

receive RF data.

From the RX module perspective: After HT time elapses and the inactivity timeout [ST

Command] is met, the RX module goes into cyclic sleep. In cyclic sleep, the RX

module wakes once per sleep interval [SM Command] to check for a wake-up

initializer. When a wake-up initializer is detected, the module stays awake to receive

data. The wake-up initializer must be longer than the cyclic sleep interval to ensure

that sleeping modules detect incoming data.

When HT time elapses, the TX module knows it needs to send a wake-up Initializer

for all RX modules to remain awake and receive the next transmission.

HV (Hardware Version)

Command

<Diagnostics> The HV

command is used to read the hardware version of the RF module.

AT Command: ATHP

Binary Command: 0x11 (17 decimal)

Parameter Range: 0 - 9

Default Parameter Value: 0

Number of bytes returned: 1

Related Commands: ID (Modem VID), DT

(Destination Address), MK (Address Mask)

AT Command: ATHT

Binary Command: 0x03 (3 decimal)

Parameter Range: 0 - 0xFFFF [x 100

milliseconds]

Default Parameter Value: 0xFFFF (wake-up

initializer will not be sent)

Number of bytes returned: 2

Related Commands: LH (Wake-up Initializer

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

Sleep)

AT Command: ATHV

Parameter Range: 0 - 0xFFFF [Read-only]

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 53 54

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