B&B Electronics ZP9D-115RM-LR - Manual User Manual
Page 41
Manual Documentation Number: ZP9D-115RM-LR-0812
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PD (Minimum Polling Delay)
Command
command is used to set/read
Polling Delay (Base, MD=3) or
Polling Timeout (Remote,
MD=4).
Polling Delay (Base) is the time
between polling cycles. The
Polling Base will start the polling
cycle after sending the first poll.
After the polling cycle has
completed, the timer is restarted.
Polling Timeout (Remote) is the amount of time the remote unit will hold data from
the serial port before discarding it. Data entered within the PD time of the poll is
transmitted and not discarded.
PE (Polling End Address)
Command
command is used to set/read the
module‟s Polling End Address –
the last address polled when
Polling Mode is enabled.
Polling Operations
: The „Polling
Base‟ (MD = 3) cycles through a
sequential range of addresses,
polling each „Polling Remote‟
(MD = 4). The base then waits for a response & proceeds to the next „Polling
Remote‟. Each „Polling Remote‟ responds by sending data from the DI buffer following
the RB & RO parameters. When there is no eligible data to send, the „Polling Remote‟
will not respond. The „Polling Base‟ will move to the next address in the polling
sequence after a short delay.
PK (Maximum RF Packet Size)
Command
command is used to set/read
the maximum size of RF
packets transmitted from an RF
module. The maximum packet
size can be used along with the
RB and RO parameters to
implicitly set the channel dwell
time.
If PK is set above 256 and BR is subsequently changed to 0, PK will automatically be
lowered to 256 and a warning will be raised (refer to the BR (RF Data Rate) and WN
(Warning Data) commands for details).
AT Command: ATPD
Binary Command: 0x47 (71 decimal)
Parameter Range: 0 - 0xFFFF_ (Base: [x 1ms],
Remote: [x 10ms])
Default Parameter Value: 0
Number of bytes returned: 2
Minimum Firmware Version Required: 2.x20
Related Commands: MD (RF Mode), PB
(Polling Begin Address), PE (Polling End
Address)
AT Command: ATPE
Binary Command: 0x46 (70 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Minimum Firmware Version Required: 2.x20
Related Commands: MD (RF Mode), PB
(Polling Begin Address), PD (Minimum Polling
Delay)
AT Command: ATPK
Binary Command: 0x29 (41 decimal)
Parameter Range: 1 - 0x800 [Bytes]
Default Parameter Value:0x100* or 0x800* (256
or 2048 decimal)
Number of bytes returned: 2
Related Commands: BR (RF Data Rate) RB
(Packetization Threshold), RO (Packetization
Timeout), WN (Warning Data)