B&B Electronics ZP9D-115RM-LR - Manual User Manual
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Manual Documentation Number: ZP9D-115RM-LR-0812
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
HP (Hopping Channel)
Command
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
command is used to set/read
the time of inactivity (no serial or
RF
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
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]