B&B Electronics ZP9D-115RM-LR - Manual User Manual
Page 38
38
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
LH (Wake-up Initializer Timer)
Command
Command is used to set/read
the duration of time during which
the wake-up initializer is sent.
When receiving modules are in
Cyclic Sleep Mode, they power-
down after a period of inactivity
(as specified by the ST
parameter) and will periodically
wake and listen for transmitted
data. In order for the receiving
modules to remain awake, they must detect ~35ms of the wake-up initializer.
LH Command must be used whenever a receiving module is operating in Cyclic Sleep
Mode. The Wake-up Initializer Time must be longer than the cyclic sleep time that [as
determined by SM (Sleep Mode) parameter]. 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 figures located under the SM command description to view diagrams of
correct and incorrect configurations. The images emphasize that the LH value must
be greater than the SM value.
MD (RF Mode) Command
MD command is used to
select/read the settings that
enable the Polling and Repeater
Modes on the module.
Polling Mode -
A „Polling Base‟
is responsible for polling
remotes. A „Polling Remote‟
requires a poll in order to
transmit.
Repeater Mode -
A „Repeater‟
re-sends RF data unless the
transmission is addressed to it or
if the transmission has already
been detected. A „Repeater End
Node‟ handles repeated
messages, but will not repeat the
message over-the-air.
Refer to the Polling and
Repeater Mode sections of
the „RF Communication Modes‟ chapter for more information.
AT Command: ATLH
Binary Command: 0x0C (12 decimal)
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)
AT
Command:
ATMD
Binary Command: 0x31 (49 decimal)
Parameter
Range:
0 - 6
Parameter
Configuration
0
Transparent Operation
(Repeater Base)
1
[reserved - not used]
2
[reserved - not used]
3
Polling Base
4
Polling Remote
5
Repeater
6
Repeater End Node
Default Parameter Value:
0
Number of bytes returned: 1
Minimum Firmware Version Required: 2.x20