IPL ROUTER SET-UP
Page 70
Setup Guide 9023409-01
Ethernet ADSL Cellular Routeur Firewall
18.2.3
Modbus server gateway
This gateway allows to connect serial modbus slaves to the
serial interface of the ETIC router.
•
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.
“C
ache refreshment period”
parameter
:
Select the period at which the gateway will send request to the slaves PLC.
“Timeout waiting for the answer”
parameter
:
Set up the timeout the gateway has to wait for the answer of the modbus slave answer.
“Local retry”
parameter
:
Set up the number of times the gateway will repeat a request 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 packet and
the following character of the same packet.
“Modbus slave address”
parameter
:
Choose “specified by the modbus TCP client” , if the address of the slave PLC must be decoded by the gateway from the
modbus TCP packet coming from the client.
Otherwise, specify the modbus address of the slave PLC; in that case only one slave can be connected to the RS232
serial interface.
“TCP inactivity Timeout”
parameter
:
Set the time the gateway will wait before disconnecting the TCP link if no characters are detected.
“TCP port number”
parameter
:
Set the port number the gateway has to use.
If the Raw TCP client gateway is assigned to both serial COM ports, the TCP port numbers must be different
on each port.