Hi all,

I have two CPU551 in same rack (UR6221) and SM500(Signal Module) and CP50M0 (Profibus Communication Processor) and CP51M1 (Ethernet Communication Processor) and CP52A0 (GDM). I have one more TDC rack includes 3 CPU551s and SM500 and CP50M0 and CP51M1 and CP52A0. I am using Omni Drive to install program into CPUs as offline and 2 dust cables to be online for all CPUs are located in two different racks but it is very hard to check programs in CPUs with online connection. Because i need to unplug first dust cable and plug second dust cable to switch online connection from CPUs in 1st rack to CPUs in 2nd rack. 

I have one ethernet switch and all CP51M1s in two racks are connected to it. On the other words they are on same ethernet network. 

CP51M1 in 1st rack

IP:10.10.6.3 && Subnet Mask: 255.255.255.0

CP51M1 in 2nd rack

IP: 10.10.6.4 && Subnet Mask: 255.255.255.0

Notebook (Fujitsu Siemens)

IP: 10.10.6.10 & Subnet Mask: 255.255.255.0

I adjusted "Set PG/PC" as ethernet card. But i couldn't establish online connection to CPUs in two different racks. I could ping to all CP51M1s successfully. 

Do i need to do another adjustment or thing to be online with all CPUs in all racks?

I want to change software program in all CPUs in two racks by using only one ethernet cable which is connected to same ethernet switch.

Thanks,

Best Regards,