Mitsubishi GOT1000 Series Connection Manual page 38

Devices
Multiple-GT11 connection function
Gateway function
1 - 6
1.1 Connections and Functions Supported by GOT
Application
By connecting the built-in RS-232 and RS-422 interfaces
alternately among the GT11s, multiple GT11s can be
connected.
This function allows data transfer between GOTs, remote
monitoring and remote maintenance via Ethernet.
Reading or writing the gateway device (EG) in the GOT is
also available from a personal computer where MX
Component is installed.
Reference
Chapter 30 MULTIPLE-GT11
CONNECTION FUNCTION
Chapter 31 GATEWAY FUNCTION