Operating instructions

72 1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009
Addressing and Polling
Command Parameters
Description Set Syntax Read
Syntax
Parameter Description Value or
Range
Meaning of Values Default
Value
Group ID ATS169=nnn ATS169? nnn Group ID 0 Ignore addressing
1 to 254 Normal group addresses
255 Broadcast group
Unit ID (sent as SourceID with over-the- ATS170=nnn ATS170? nnn Unique Unit ID 0 Unit is Base in its group
air messages) 1 to 254 Unit is an Outstation in its group
Destination ID ATS171=nnn ATS171? nnn Destination ID for 0 to 254 Messages sent to unit with this ID
messages 255 Message sent to all units in group
Polling timer AND message initiation
behaviour.
The effect of this command depends on the
mode (ATM1=MI or ME or ML), and whether
the unit is an Outstation (ATS170=1-254) or
a Base (ATS170=0)
ATS183=t,u ATS183? t Polling period 0 Base:
In I-mode, Spontaneous (no poll) mode
In E-mode, ignored
In L-mode, poll sequence of Outstations
continuously
Outstation:
In I-mode, Spontaneous (no poll) mode
0
In E-mode,}
In L-mode, }
ignored (no poll timeout
alarm)
1 to 65535 Base:
In I-mode, unit polls with this period.
In E-mode, ignored (poll is external)
In L-mode, poll sequence of Outstations
leaving this period between sequences.
Outstation:
I, E and L-mode: unit expects polls with
this period, and raises Comms Alarm if
exceeded by 3s.
u Polling period T units are 10s
units S units are 1s S
H units are 100ms
Number of Outstations to poll (ML only) ATS189=n ATS189? n Number of
Outstations
1-254 Number of Outstations 0