MFU Properties
Publication PUB091-003-00_0119
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2 MODBUS OPTION CARD PROPERTIES
2.1 Mechanical properties
The MFU module consists of a network interface card, that either fits directly to the main actuator
printed circuit board (ROMpak) or fits to an interface card; where the two board assembly is then fitted
inside the actuator electrical housing (IQ Pro, IQT Pro, SI Pro, EH Pro and Q).
All the connectors are polarised to prevent incorrect insertion.
Network Interface Card (NIC)
This small printed circuit board carries the Modbus, RS-485 highway connections and protection
circuits. There are two versions of the Network Interface Card, one for a single highway and a
second for two highway (or one highway with repeater) use.
Fig 3: The Modbus single channel NIC, showing the network connector.
Fig 4:
The Modbus dual channel NIC.
Network Connector
Network Connector
