User`s guide

HTML SET UP & DIAGNOSTIC
To configure the Modbus server gateway,
• select the modbus menu and then modbus server,
• enable the modbus server gateway and set the parameters as follows:
“Modbus protocol” parameter :
Select the RTU or ASCII option
“Activate Proxi cache” parameter :
Enable the proxi option if you wish to avoid to frequent requests on the
serial interface.
“Cache refreshment period” parameter :
the same request is received twice or more inside that delay, it will be
sent only once to the slave on the serial interface.
“Timeout waiting for the answer” parameter :
Set up the timeout the gateway has to wait for the answer of the modbus
slave.
“Local retry” parameter :
Set up the number of times the gateway will repeat a request to one of the
modbus slaves on the serial interface before declaring a failure.
Failsafe ring SHDSL switch User’s guide ref 9014809-03
Page 49