User`s guide

Configuration
XSLAN shdsl switch User’s guide ref 9014709-01 Page 35
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.
“Inter-character gap” parameter
Set up the maximum delay the gateway will have to wait between a
received character of a modbus answer frame on the serial interface and
the following character of the same frame.
“Modbus slave address* parameter
If only one modbus slave device is connected to the serial interface,
set the modbus address of the device; any TCP modbus request
received by the gateway will be sent on the serial interface using that
modbus address.
If several modbus slave devices are connected to the serial
interface, select “specified by modbus TCP client”;
In that case, each request sent by the TCP/IP modbus client to one of
the slaves connected to the serial interface must specify the modbus
slave address value in the modbus address field.
“TCP inactivity Timeout” parameter
Set the time the gateway will wait before disconnecting the TCP link if no
characters are received.
“TCP port number” parameter
Set the port number the gateway has to use.
4.7.1.4 “Modbus client” gateway
A Modbus master device is connected to the serial interface of the
XSLAN.
That modbus master can send requests to slaves connected to the serial
interface or to 256 modbus TCP servers maximum connected to the IP