
REFERENCES
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2
To help understand the various communication control possibilities among the
different communication modes, we will analyze the communication control
parameter settings for the following 4 cases:
1) STAR Modem™ in Stand Alone Mode acting as Server (like an OM-cradle)
2) STAR Modem™ in Stand Alone Mode acting as Client (like an RF device)
3) STAR Modem™ in STAR-System™ Mode
4) STAR Modem™ in Stand Alone Mode acting as Server (for an intelligent printer)
Case 1 – STAR Modem™ in Stand Alone Mode as Server (like an OM-cradle)
Figure 1 – Stand Alone Mode with STAR Modem™ Server
STAR Modem™ is in Stand Alone Mode as a dedicated
Server
receiving (like an
OM-cradle). The ACK/NACK Protocol parameter can be set to assure correct
communication between STAR Modem™ and the local Host.
Assuming the RF devices are setup for 2 way transmission we can analyze the
following ACK/NACK protocol selections:
RF devices -
Transmission Mode = 2 ways
The Host must respond to a 2 way transmission
•
If Modem -
ACK/NACK = disabled
there is no control of the communication between STAR Modem™ and the
Local Host. STAR Modem™ answers the RF device which initiated the 2 way
transaction with DATA received from the Local Host.
HOST
DRAGON 1
DRAGON 2
DRAGON 3
Modem
F734-E