IDEC MicroSmart Pentra - Manual (Page 80)

7: M AINTENANCE C OMMUNICATION S ERVER
7-4 W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278
When you enable Pass-Through over Modbus RTU option, the server connection can be used for the pass-through over
Modbus RTU. You also have to configure the communication port 2 as Modbus RTU master. The port used for the pass-
through over Modbus RTU cannot be used in any other server connections.
When you monitor a Modbus RTU slave with WindLDR via a Web server CPU module configured as Modbus RTU master,
select Ethernet and 1:N under PLC Network Settings and then enter the slave number of the Modbus RTU slave in the
Communication Settings dialog box.
When the pass-through over Modbus RTU is enabled in Web server CPU module, it is also possible for a computer to
communicate with Modbus RTU slaves via the Web server CPU module using USB port. Select USB and configure the
network settings in the Communication Settings dialog box.
Note: Even If the same local host port number is allocated to the multiple server connections configured as the maintenance
communication server, only one IP address can be configured as the allowed IP address.