User Manual

3.6 Radio Modem Applications
SST-900/SST-2400 setting:
(Device A)
 RS-232
 Half-duplex mode
 Synchronous way
 Slave state
 Baud rate=9600
 Channel=3

Fre
q
uenc
y
=915.968MHz
Device A Device B
Device C Device D
Configuration 3
Point to multi-point application
SST-900/SST-2400 setting:
(Device B/C/D)
 RS-485 or RS-232
 Half-duplex mode
 Synchronous way
 Slave state
 Baud rate=9600
 Channel=3
 Frequency=915.968MHz
The 7521 series is a embedde
d
controller. Because the 7521 series is
p
rogrammable, it can be used as a
bridge between the SST-900 &
external devices. These devices can
be PLC, controller or 7000 modules.
7521/2/2A/3/4/7 Series Hardware User’s Manual, Ver. 1.5 Sep/2002, 7Mh-001-15 -----70