User’s Guide
Configuration Commands 3-4
Command format:
unit
[n]
where: n =
[0-15]
The unit address that a modem pair must be set to in order for
them to communicate.
site
Radio Modem site address
This command sets the device site code. Each site code can effectively support
up to 16 different unit addresses. For two radio modems to communicate they
must have matching unit and site codes.
It is recommended that this command is not used to continually change the site
code in a point-to-multipoint system, as this EEPROM memory location has a
life of only 100,000 write cycles. The command
addr
is provided for the
purpose of continually changing the unit address, site code and hop count.
Command format:
site
[n]
where: n =
[0-7]
The site code that a modem pair must be set to in order for them
to communicate.
hop
Data packet repeater hop count
This command sets the number of repeater hops a packet is required to make
in order for it to reach it’s destination radio modem.
As each packet is retransmitted by a repeater, the packet count is decremented
by one, until the packet reaches a hop count of zero. A repeater, upon receiving
a packet with a hop count of zero, will immediately discard the packet. This
prevents a data packet from bouncing around a network forever.
A radio modem will not accept a data packet if it’s hop count is anything but
zero. If a repeater is not required between to radio modems, then this value
should always be set to zero.
The
RM-232-151/173 VHF
radio modems only support 1 repeater hop.
It is recommended that this command is not used to continually change the hop
count in a point-to-multipoint system, as this EEPROM memory location has a
life of only 100,000 write cycles. The command
addr
is provided for the
purpose of continually changing the unit address, site code and hop count.
Command format:
hop
[n]
where: n =
0
No repeater hops to reach remote modem
1
One repeater hops to reach remote modem
2
Two repeater hops to reach remote modem
3
Three repeater hops to reach remote modem
Summary of Contents for RM232-433
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