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ZP9D-115RM-LR Radio Modem
33
MD (RF Mode) Command
<Networking & Security> The 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.
MK (Address Mask) Command
<Networking & Security> The MK
command is used to set/read the
Address Mask of a module. All RF
data packets contain the Destination
Address of the TX (transmitting)
module. When a packet is received,
the TX module Destination Address
is logically "ANDed" (bitwise) with the
Address Mask of the RX (receiving)
module. The resulting value must
match the Destination Address or
Address Mask of the RX module for the packet to be received and sent out the RX
module's DO (Data Out) pin. If the "ANDed" value does not match the Destination Address
or Address Mask of the RX module, the packet is discarded.
Sniffer Mode
(when MK = 0): ACK requests are ignored and every RX (receive) frame is
sent to the UART, without regard for repeated frames. All “0” values are treated as
irrelevant values and ignored.
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
AT Command: ATMK
Binary Command: 0x12 (18 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0xFFFF (65535d)
Number of Bytes Returned: 2
Related Commands: DT (Destination Address),
HP (Hopping Channel), ID (Modem VID), MY
(Source Address)