Operating instructions

1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009 47
Addressing
Section Addressing on page 14 explains the addressing scheme used by the Orion in detail.
v If you intend to use no addressing at all, select the No Addressing checkbox
and ignore the other addressing details. This is only available in Mode U.
Remember that repeaters cannot be used in such a network.
v If you intend to use a Broadcast topology, select the Master Broadcast
checkbox for the Base unit and ignore the other addressing details.
v Otherwise, fill in appropriate Unit, Destination and Group IDs.
The Unit Used As box is just an indicator: a UnitID of 0 (Base) displays “Master”, and any
other value (Outstation) displays “Slave”.
The Outstations List Editor is purely documentary, allowing you to note a name beside each
unit for your convenience.
Over-Air Protocols
Modes I, E and L do not allow a choice of protocol, which is fixed at TU. Reasons for
choosing each protocol in U mode are discussed on page 27. A repeater must be set to the
protocol used by the rest of the network. Repeaters are not available in TP mode, nor where
there is no addressing.
v Select a choice from the group labelled Modem Protocols where appropriate.
TELEMETRY CONFIGURATION
If you have selected Mode I (Base or Outstation) or Mode E (Outstation) on the Modes and
Addressing tab, then an additional set of tabs appears below the main set, to enable you to
set up inputs, outputs and alarms. (Mode E Base has no tabs because it uses no I/O, but
communicates with SCADA equipment via a serial interface.)
Figure 16 - Parameters tab on lower set