Manual Documentation Number: MDRxxxxA-807
25
Black Box Corporation - 1000 Park Drive - Lawrence, PA 15055-1018
www.blackbox.com -- Tech Support and Ordering: 724-746-5500 - Fax: 724-746-0746
<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.
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.
MD (RF Mode) Command
<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 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.
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)
Refer to the figures in the Sleep Mode sections 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.
AT Command: ATMD
Binary Command: 0x32 (50 decimal)
Parameter Range:
0 – 4
Parameter Configuration
0
Peer-to-Peer (transparent
operation)
1 Multi-Stream
Base
2 Multi-Stream
Remote
3
Repeater & End Node
4 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
26
Manual Documentation Number: MDRxxxxA-807
Black Box Corporation - 1000 Park Drive - Lawrence, PA 15055-1018
www.blackbox.com -- Tech Support and Ordering: 724-746-5500 - Fax: 724-746-0746
MK (Address Mask) Command
<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
transmitter’s 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.)
MY (Source Address)
Command
<Networking & Security>
Set/Read the source address of
the module.
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)
AT Command: ATMY
Binary Command: 0x2A (42 decimal)
Parameter Range:
0 – 0xFFFF
Default Parameter Value: 0xFFFF (Disabled –
the DT (Destination Address) parameter serves
as both source and destination address.)
Number of bytes returned: 2
Related Commands: DT (Destination Address),
HP (Hopping Channel), ID (Modem VID), MK
(Address Mask), AM (Auto-set MY)
Minimum Firmware Version Required: 4.30
