B&B Electronics Zlinx ZP Series - Manual (Page 42)

38 Manual Documentation Number: ZP24D-250RM-SR-2508
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AS (Active Scan) Command
The AS
command is used to send a
Beacon
Request to a Broadcast
Address (0xFFFF) and Broadcast PAN
(0xFFFF) on every channel. The
parameter determines the amount of time
the RF module will listen for Beacons on
each channel. A ‘PanDescriptor’ is created
and returned for every Beacon received
from the scan. Each PanDescriptor contains the following
information:
CoordAddress (SH + SL parameters)
CoordPanID (ID parameter)
CoordAddrMode
0x02 = 16-bit Short Address
0x03 = 64-bit Long Address
Channel (CH parameter)
SecurityUse
ACLEntry
SecurityFailure
SuperFrameSpec (2 bytes):
bit 15 - Association Permitted (MSB)
bit 14 - PAN Coordinator
bit 13 - Reserved
bit 12 - Battery Life Extension
bits 8-11 - Final CAP Slot
bits 4-7 - Superframe Order
bits 0-3 - Beacon Order
GtsPermit
RSSI (- RSSI is returned as -dBm)
TimeStamp (3 bytes)
(A carriage return is sent at the end of the AS command.
The Active Scan is capable of returning up to 5 PanDescriptors in a scan. The actual
scan time on each channel is measured as Time = [(2 ^ (SD Parameter)) * 15.36] ms.
Total scan time is this time multiplied by the number of channels to be scanned.
NOTE: Refer the scan table in the SD description to determine scan times. If using API
Mode, no ’s are returned in the response. Refer to the API Mode Operation
section.
AT Command: ATAS
Parameter Range: 0 - 6
Related Command: SD (Scan
Duration), DL (Destination Low
Address), DH (Destination High
Address), ID (PAN ID), CH (Channel)
Minimum Firmware Version Required:
v1.x80