108 | XIO USER MANUAL | 2106424MNAA
Figure 6-17: Configure attached device type
Figure 6-18: Configure COM port
6.3.3 Incorrect protocol selection
Ethernet-Serial Passthrough supports the Passthrough or Modbus TCP Gateway protocols. Set the XIO for
the Modbus TCP Gateway protocol only if the RMC communication application is setup as a Modbus TCP
client. Otherwise, use Passthrough. Mismatch in protocol configuration prevents communication.
To verify or configure the correct protocol: