User manual

Chapter Four Configuration
Man_805U Rev 1.9 Page 33
At the master unit, you need to enter the address of the slave. Select the “Stored Add” page
and “Dest1”. The address of the
slave is entered into “Dest Add 1”
and up to five repeater addresses
may be entered. Repeater modules
may be configured in any
controlled mode option, but they
must have the same system
address. The repeater addresses are
entered in order from the master -
that is, “Rpt 1” is the first repeater
after the master.
You can enter address structures
for four slaves - “Dest 1” to “Dest
4”. However the host must use AT
command to select which slave is
required. Without the use of AT
commands, the master will only
attempt to connect to the address
configured in “Dest 1”.
Auto-Connect Slave
The only configuration required for
a auto-connect slave module is to enter its unit address.
Single-Connect
In single-connect controlled mode, the host devices use AT commands to select destination
addresses to connect to. Normally the only configuration required is a unit address.
Low Power Mode
If “Low Power Mode” is selected, the module will disconnect the communications link and
shutdown its receiver circuits if the RS232 DTR signal goes to a low or reset state. When the
DTR signal becomes high or active, then the module will revert to normal operation.
Controlled Mode Options
For each controlled mode, there are some options. In the “Advanced” page, there are some
timing parameters.
If you enter a “Link Check Time”, then
the master unit will send a “check
message” if the check time has elapsed
without any data transmissions. For
example, if you enter 10 seconds, then if
there is a 10 second period without a
data transmission, then the master
module will transmit a check message.
If the slave does not acknowledge, then
the master will transmit the check
message up to five times. If there is still
no ACK, then the master will reset the