User's Manual

455U Radio Modem Module User Manual
Page 32 © November 2004
Select a Unit address for the module. Giving each module a unique unit address allows the
modules to be accessed over the radio using remote configuration and diagnostics
The “Auto Connect” button will normally be selected for unacknowledged mode. This causes
the modem to go directly online. Usually the RS232 path will be set to “0” to broadcast to all
RS232 ports in the system, and the RS485 path will be set to 128 to broadcast to all RS485
ports in the system. If you select “Single Connect”, then the module will start-up in
command mode, and will not operate until the host device sends it an AT command to go on-
line.
Broadcast Repeater
Selecting the broadcast repeater mode to causes the modem to become part of the a broadcast
backbone. Setting the repeater mode to “Hop 1” causes the modem repeat all messages which
have completed one hop, and have a “0” in the first intermediate address position of the
address. Similarly, setting Setting the repeater mode to “Hop 2” causes the modem repeat all
messages which have completed two hop, and have a “0” in the second intermediate address
position of the address.
455U
Rptr Mode
= Hop1
455U
Rptr Mode
= Disabled
Computer
PLC
PLC
PLC
PLC
PLC
PLC
PLC
455U
Rptr Mode
= Hop1
455U
Rptr Mode
= Hop2
455U
Rptr Mode
= Disabled
455U
Rptr Mode
= Hop3
455U
Rptr Mode
= Disabled
455U
Rptr Mode
= Disabled