Grundfos

CIM 500

Also applies to: CIM 250, CIM 500 Modbus

45 minutesModerateModbus TCP/RTU

What You Need

Grundfos CIM 500 module

Cat6 Ethernet cableIncluded in kit

Flowstate CL260 edge nodeIncluded in kit

Customer provides:

1
Install CIM 500 module
Slide the CIM 500 communication module into the Grundfos pump controller's CIM slot. The module clicks into place.
CIM 500 is compatible with Grundfos E-pumps, CR, CRE, TP/TPE, NB/NBE, and other series with a CIM slot.
2
Connect Ethernet
Connect a Cat6 cable from the CIM 500 RJ45 port to the Flowstate edge node.
3
Set IP address
Use Grundfos GO Remote app or the pump controller display to set a static IP in the 10.0.100.x range.

1
Enable Modbus TCP
Via the pump controller or GO Remote app: Communication > Protocol > Modbus TCP. Set Unit ID (default 1).
2
Configure register map
CIM 500 exposes standard Grundfos registers. Flow rate (register 200), pressure (202), power (206), runtime hours (210).

1
Test Modbus connection
From the edge node, read register 200 using modpoll or the Flowstate diagnostics tool. Verify flow rate reading.
2
Dashboard check
Pump appears in Flowstate within 60 seconds with flow, pressure, and power metrics.

Flow rate (m3/h)

Differential pressure (bar)

Power consumption (kW)

Runtime hours

Motor speed (RPM)

Pump status (run/stop/fault)

Bearing temperature (C)

Energy consumption (kWh)

Don't have Modbus TCP/RTU access?

The universal CT clamp works on any machine — 15 minutes, zero configuration.

Calculate what downtime is costing you, then get started.