Replace from GPIB-USB-HS to GPIB-ENET/1000

Hello,

I try to replace the control PC. But the device reply the message "ERROR"

The old one:

- Windows 7

-  PCMCIA-GPIB and GPIB-USB-HS 

-  NI-488.2 Software 2.52

- Send Command to Device :  "DCB\r\n"

  Reply Message from Device  :  "="

The new one:

- Windows 10

-  GPIB-ENET/1000 

-  NI-488.2 Software 16.0.0

- Send Command to Device:   "DCB\r\n"

  Reply Message from Device:   "ERROR"

Device error number means Incorrect command.

But both command is "DCB\r\n" 

I don't understand the difference.

Thanks!