User manual

CONFIGURATION
11.2 Modbus gateway
The MODBUS gateway can be assigned to the serial port 1 or to the
serial port 2 or to both.
if it is assigned to both serial ports, the UDP port numbers must be different.
11.2.1 Modbus server gateway
This gateway allows to
connect asynchronous
modbus slaves to the serial
interface of the IPRS.
• Select the modbus menu and then modbus server and enable the
modbus server gateway and set the parameters as follows :
“Port selection” parameter :
Select the serial port COM 1 or COM2.
If the modbus server gateway is assigned to one serial COM port, it
cannot be assigned to the other one.
« ASCII / RTU protocol » parameter:
Select the right option
“Proxi” parameter:
Enable the proxi option if you wish to avoid to frequent requests on the
RS232-RS485 interface.
“Cache refreshment period” parameter:
IPRS serial gateway User guide ref. 9018409-01
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