Advantech Zlinx ZP9D-115RM-LR User Manual page 38

MT (Multi-transmit) Command
<Networking & Security> The MT
command is used to enabled
multiple transmissions of RF data
packets. When Multi-transmit Mode
is enabled (MT > 0), packets do not
request an ACK (acknowledgement)
from the receiving RF module(s). MT
takes precedence over RR, so if
both MT and RR are non-zero, then
MT+1 packets will be sent (with no
ACK requests).
When a receiving module receives a packet with remaining forced re-transmissions, it
calculates the length of the packet and inhibits transmission for the amount of time required
for all retransmissions. Thereafter, a random number of delay slots are inserted between 0
and RN before transmission is allowed from the receiving module(s). This prevents all
listening modules from transmitting at once upon conclusion of a multiple transmission
event (when RN > 0).
Note: The actual number of forced transmissions is the parameter value plus one. For
example, if MT = 1, two transmissions of each packet will be sent.
MY (Source Address) Command
<Networking & Security> The MY
command is used to set/read the
Source Address of the RF module.
ZP9D-115RM-LR Radio Modem
AT Command: ATMT
Binary Command: 0x3D (61 decimal)
Parameter Range: 0 - 0xFF
Default Parameter Value: 0 (no forced
retransmissions)
Number of Bytes Returned: 1
Related Commands: Networking (DT, MK, MY,
RN, TT), Serial Interfacing (BR, PK, RB, RO),
RF Interfacing (FS)
AT Command: ATMY
Binary Command: 0x2A (42 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0xFFFF (Disabled -
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)
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