Hardware required for network connection:

CIM 500
Product number: 98301408

Note: One CIM is required in the main pump head for the MAGNA3-D Model D; one CIM each is required for the MAGNA3-D Model A-C.

The CIM500 interface offers easy integration into both new and existing systems, as the Modbus TCP protocol is a standard protocol supported by numerous control and automation systems.
With a rotary switch, you can easily change the protocol to PROFINET IO, Bacnet Ip and Ethernet IP.
An integrated webserver allows easy Ethernet parameter changes to configure the CIM500 to the wider system.

Learn more about the module in the Grundfos Product Center

Basic information on Grundfos Gateways for Modbus TCP networks

Quick Guide for the CIM/CIU

Common error code for all Grundfos products

The Grundfos MAGNA3 pump has a build in sensor, an analogue input and an integrated PI controller. This means that a control loop consisting of pump and sensor can be set up directly.
With an additional temperatur sensor Grundfos HVAC pumps can calculate heat energy.
Use our MAGNA3 sensor installation guides.

MAGNA3 with RPI T2

The PC Tool CIM/CIU is intended for system integrators and Grundfos service personnel. It shows the data content (functional profile) of a Grundfos product, which is connected to your PC via a CIM, CIU or softCIM.

PC Tool CIM/CIU


The CIM 500 firmware can be updated via the integrated webserver.

Current CIM 500 firmware


With the "Grundfos GO Remote" app, you can use your smartphone or tablet to parameterise Grundfos pumps and controllers, save settings and create commissioning logs.
The app can be connected to the device via Bluetooth if it is supported or via a Grundfos MI 301 (98046408). The free smartphone app is available for download in the app stores below:

Modbus TCP

MAGNA3-D twin pump