Wire Replacement I/O (900 MHz): User Manual and Reference Guide
2.7 Setting I/O Master MultiPoint Parameters
The MultiPoint Parameter options are used to change several different parameters in the radio
that determine the characteristics of a MultiPoint network.
In an I/O Master, set these parameters in the
MultiPoint Parameters
tab.
Note
: These settings are available in the
MultiPoint Parameters
menu in the terminal interface.
l
Master Packet Repeat
l
Repeaters
l
Network ID - See
Establishing Communication with I/O Slaves (on page 35)
l
Subnet ID - Only required if the I/O Master's
Modem Mode
is set to
(3) Point to
MultiPoint Slave
) and subnet IDs are using the radio network.
The remaining parameters in the MultiPoint Parameters tab can remain at their factory default
settings to establish a link with the I/O Slaves. Each of the additional parameters is described in
detail in
Setting Other MultiPoint Parameters (on page 67)
.
2.7.1 Master Packet Repeat
Master Packet Repeat
Setting
Description
Default Setting:
3
Options:
In a wire replacement I/O system, the I/O Master must have a
Master Packet
Repeat
parameter setting of
3
.
Terminal Menu:
(5) Edit MultiPoint Parameters > (1) Master Packet Repeat
Description
l
In a Point-to-MultiPoint network, Slaves do not acknowledge
transmissions from the Master.
l
If Slaves did acknowledge all data transmissions, in a large network, the
Master would soon become overwhelmed with acknowledgments from
the Slaves.
l
Without acknowledgments, 100% confidence every Slave has received
every packet cannot be met.
2.7.2 Repeaters
Repeaters
Setting
Description
Default Setting
Enabled
LUM0008AG Rev Sep-2015
Page 39 of 131
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