XLR PRO operational design
XLR PRO Radio Frequency (RF) Modem User Guide
20
Ethernet RF bridging
In Ethernet RF bridging mode, the XLR PRO functions as an Ethernet cable replacement, supporting point-to-
multipoint transmissions for up to 16 XLR PROs. It is configured by these parameters:
•
BE
(Bridge Enable): This parameter must be set to 1 to enable bridging, but it is disabled by default.
•
BA
(Destination RF MAC address for Ethernet bridging): Default value is 0xFFFF which is the broadcast address. If
pairing XLR PRO devices is desired, then this should be set to the RF MAC address of the opposing XLR PRO. This
can be identified by querying the SH and SL parameters on the opposite XLR PRO (example:
BA=0x0013A20012345678).
With bridging enabled, the XLR PRO radios on the RF network should be treated as if they were a single Ethernet
cable. Consult a qualified network administrator to evaluate the radio deployment if multiple XLR PRO radios will be
used on the same LAN or if bridging multiple large networks together.
Serial mode selection
At any given time, only one serial mode can be selected. The XLR PRO selects the serial mode based on cable
connections detection and configuration options.
•
USB
XLR PRO detects DTR on the USB virtual COM port.
•
RS-232
XLR PRO detects DTR on the RS-232 serial port.
•
RS-485/422
RS-485 configuration option is enabled or disabled via the
4E
(enable RS-485 mode) parameter.
•
IP socket
P Socket configuration option is enabled or disabled via the
ES
(enable IP socket mode) parameter.
The following flow chart depicts how the XLR PRO selects serial mode:
Reset / Power On
USB DTR?
USB
RS-232 DTR?
Yes
ES Set?
RS-232
IP Socket
RS-485
4E Set?
No
Yes
No
No
(default)
No
Yes
(default)
Yes