ETIC RAS-E, User Manual, Page: 119 / 132

ADVANCED SET-UP
Machine Access Box RAS
DOC_DEV_RAS_User guide_A
Page 119
15.2.4 Modbus client gateway
This gateway allows to connect a
serial modbus master to the serial
interface of the IPL-AD2.
 Select the modbus menu and then “modbus client” menu; enable the “modbus client” gateway and set up
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
“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.
“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 TCP port number the gateway has to use.
“IP address” parameter :
The modbus client gateway allows to transmit modbus requests from the serial modbus master device to
any modbus slave device, more precisely called “ modbus server”, located on the IP network.
To assign an IP address to each modbus slave device with which the serial master device needs to
communicate, click the “add a link” button; Assign an IP address in front of each modbus slave address with
which the serial master device will have to communicate.