Prerequisites - FDM128 UG

The Ethernet connections of the IP devices in the Ethernet network must be correctly installed and configured.

NOTE: To connect to an Ethernet device outside the subnetwork a popup message requests your confirmation to connect to another subnetwork.

The Ethernet network may include the following IP devices:

NOTE: FDM128 display does not support devices with local ID (Virtual ID) from the Com'X or Link150 gateways.

For further information, refer to the corresponding user guides provided in the section Related Documents.

NOTE: PowerTag Link B gateway is equivalent to Smartlink SI B gateway.

The devices in the Modbus serial line network must be correctly installed and configured with the following Modbus parameters:

Parameter	Value
Modbus address (slaves only)	The Modbus address of each monitored device must be unique. The range of Modbus addresses is [1-247].
Physical interface	RS-485 2-wire
Transmission mode	RTU (Automatic)
Communication speed	The communication speed must be the same for all devices.
Parity	The parity must be the same for all devices.
Response time-out	1 second

To check the Modbus parameters of each monitored device, refer to the section Related Documents:

The limitations of the architecture network are as follows:

Modbus serial line time out in the IFE device should be 1 s.
To avoid communication error or not to overload the network, a maximum of two FDM128 displays must be connected to the same IFE device. The FDM128 displays can scan data of the same circuit breaker.