The Communication Interface Unit (CIU) enables data communication through open and interoperable networks, such as:
• Profibus DP
• Profinet
• Modbus RTU
• Modbus TPC
• LonWorks
• BACnet MS/TP
• BACnet/IP
• EtherNet/IP
• Cellular connection
• GiC/GRM

Applications
The range of Grundfos communication interface offers easy installation and commissioning, as well as userfriendliness. All units are based on standard functional profiles for an easy integration into the network.
The CIM/CIU units enable communication of operating data, such as measured values and setpoints, between pumps and PLCs, SCADA system and building management system.

Benefits
CIM/CIU offers the following benefits:
• open communication standards
• complete process control
• one concept for Grundfos products
• 24-240 VAC/DC power supply in CIM/CIU modules
• simple configuration and easy to install
• prepared for DIN rail or wall mounting.
For data communication between an SP pump and a main network, a CIM/CIU has to be used with a Cue frequency converter, an MP 24 motor protector or an LC 232 and LC 242 level control unit.
If CIM and CIU are used together, then mount the CIM module inside CIU upon installation. For products with integrated CIM support, mount the CIM directly into the product during installation.