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Hi @ all, I have just a short question about the hardware of a V260-16-B20B. When reading the installation guide, there is stated, that the COM2 Port could be used either as RS232 or RS485 port. One should be able to choose if it's 232 or 485 by changing jumpers on the inside of the OPLC, right next to the COM-Ports. As I opened the OPLC to install an Ethernet-Card on Port3, I wanted to change the COM2 Port to RS485 by jumper selection, but there is none .... So, is it not necessary to have jumpers switched on V260-16-B20B or is it not possible to use it for RS485 Modbus Communication on Port2 ??? Thanks to you guys, FireNeck