Thank you for replying.
The firmware was updated to SW3.12 and I verified on URSim and Real Robot(UR3).
The result is below:
on URSim(SW3.12): limit is 3
on Real Robot(SW3.12) without Ethernet/IP : limit is 6
on Real Robot(SW3.12) with Ethernet/IP : limit is 5
Host Computer:192.168.2.101
Real Robot:192.168.2.11
The below image is with Ethernet/IP and it is indicated that limit is 5.
