User manual

Chapter Four Configuration
Page 45 © January 2011
&V10
Display the Stored / Non-volatile Configuration.
&V11
Display the elements of the stored configuration which differ from factory
default.
The 905U-D has two sets of configuration parameters - a set stored in non-volatile memory and
an active set in RAM memory. Normally on start-up, the configuration is read from the stored
memory to the active memory. Changes can be made on-line to the active configuration which
are not stored.
Transmit and Receive Hold-off times
Transmit holdoff ATS16=x where x is the delay time in msec (0 – 255)
For example, ATS16=200 results in a transmit holdoff delay of 200msec.
Receive holdoff ATS15=x where x is the delay time in msec (0 – 255)
For example, ATS15=80 results in a receive holdoff delay of 80msec.
Radio Message Signature - refer section 3.9
ATS21 = 0, 1, 2 or 3 1 is the default value
To be compatible with old modules with fixed signature, set to 0. If a new system, set to 2 or 3
to separate from other 905U-D systems in the same area.
4.6 Configuration Examples
Transparent Mode
Extending a PLC Network
Left-hand Unit Configuration
Set the module to factory default settings: AT&F
Set the system address to a random number: AT&S138
Set the group address AT&G1
The group address for the left hand side modules has been set to 1.
PLC
PLC
RS485
38.4KB
905U-D
905U-D
19.2KB
19.2KB
905U-D
PLC
RS485
9.6KB
REPEATER
DATA = 7 DATA BITS, 1 START, 2 STOP, EVEN PARITY
PLC
RS485
9.6KB