Grundfos Hydro MPC / Hydro Multi-E (CIM 200 / CIM 500)

Name: Grundfos Hydro MPC / Hydro Multi-E (CIM 200 / CIM 500)
Brand: Grundfos
SKU: b3591341-cbfa-4a02-9fe1-7117fdc0fd48

Monitors and controls Grundfos Hydro MPC and Hydro Multi-E booster sets: pressure, flow, power and alarms.

Grundfos Hydro MPC and Hydro Multi-E are booster sets with several speed-controlled pumps that hold the water pressure at a setpoint, for example for irrigation water in greenhouses, and connect to Modbus through a CIM 200 or CIM 500 module. This Modbus RTU template reads outlet and inlet pressure, flow, power, energy, alarm codes and per-pump data, and lets you write start and stop, control mode and setpoint from ModbusCloud.

Protocol: Modbus RTU
Connection: RS485, 19200 baud
Registers: 328, read and write

Brand: Grundfos
Key readings: Outlet pressure · Inlet pressure · Volume flow · Power consumption · Energy consumption · Alarm and warning code · Pumps running · Operating hours per pump
Available commands: Start and stop · Control mode · Setpoint · Operating mode · Forced start or stop per pump · Manual pump speed
Compatible models: Hydro MPC (CU 352) · Hydro MPC (GENIECON) · Control MPC · Hydro Multi-B (CU 323) · Hydro Multi-E · DDD (CU 354) · TPED · MAGNA3-D · CIM 200 Modbus RTU · CIU 200 Modbus RTU · CIM 500 Modbus TCP · CIU 500 Modbus TCP · SoftCIM Modbus RTU (GENIECON, TPED with FM310/311/110) · SoftCIM Modbus TCP (GENIECON)
Last updated: 7 October 2026

Registers (328)

328 read, 121 write

Name	Unit	Access
Outlet Pressure	bar	Read
Inlet Pressure	bar	Read
Head	bar	Read
Volume Flow	m³/h	Read
Relative Performance	%	Read
Power	W	Read
Energy	kWh	Read
Operating Time	h	Read
Actual Setpoint	%	Read
User Setpoint	%	Read
Analogue Influence	%	Read
Motor Current	A	Read
Remote Pressure 1	bar	Read
Remote Pressure 2	bar	Read
Storage Tank Level	m	Read
Feed Tank Level	m	Read
Remote Temperature 1	K	Read
Remote Temperature 2	K	Read
Ambient Temperature	K	Read
Inlet Temperature	K	Read
Outlet Temperature	K	Read
Temperature Difference	K	Read
Medium Temperature	K	Read
Differential Pressure	bar	Read
Differential Inlet Pressure	bar	Read
Differential Outlet Pressure	bar	Read
Differential Remote Pressure	bar	Read
Remote Flow	m³/h	Read
Flow Measurement 1	m³/h	Read
Flow Measurement 2	m³/h	Read
Flow Measurement 3	m³/h	Read
Aux Sensor Input	%	Read
Specific Energy		Read
Specific Energy Average		Read
Latest Night Flow Average	m³/h	Read
Latest Night Pressure Average	bar	Read
Pumped Volume	m³	Read
Pumped Volume Direction 1	m³	Read
Pumped Volume Direction 2	m³	Read
Heat Energy Counter	kWh	Read
Heat Energy Counter 2	kWh	Read
Heat Power	W	Read
Heat Differential Temperature	°C	Read
Proportional Control Reduction	%	Read
Proportional Control Max Flow	m³/h	Read
Digital Inputs		Read
Digital Outputs		Read
System Status Word		Read
Process Feedback	%	Read
Actual Control Mode		Read
Actual Operating Mode		Read
Alarm Code		Read
Warning Code		Read
Pumps Present		Read
Pumps Running		Read
Pumps Alarm		Read
Pumps Communication Fault		Read
System Active Functions		Read
Pumps Auto Mode		Read
Application Type		Read
Tank Fill Tank Height		Read
Tank Fill Start Limit	%	Read
Tank Fill Stop Limit	%	Read
Tank Fill Alarm High Limit	%	Read
Tank Fill Warning Low Limit	%	Read
Feedback Sensor Unit		Read
Feedback Sensor Min		Read
Feedback Sensor Max		Read
System Feedback Sensor		Read
Analog Input 1 Unit		Read
Analog Input 2 Unit		Read
Analog Input 3 Unit		Read
Analog Input 4 Unit		Read
Analog Input 5 Unit		Read
Analog Input 6 Unit		Read
Analog Input 7 Unit		Read
Kp		Read
Ti		Read
Analog Input 1 Value		Read
Analog Input 2 Value		Read
Analog Input 3 Value		Read
Analog Input 4 Value		Read
Analog Input 5 Value		Read
Analog Input 6 Value		Read
Analog Input 7 Value		Read
Pump 1 Status		Read
Pump 1 Alarm Code		Read
Pump 1 Operating Time	h	Read
Pump 1 Speed	%	Read
Pump 1 Line Current	A	Read
Pump 1 Power	W	Read
Pump 1 Motor Temperature	K	Read
Pump 1 Control Source		Read
Pump 2 Status		Read
Pump 2 Alarm Code		Read
Pump 2 Operating Time	h	Read
Pump 2 Speed	%	Read
Pump 2 Line Current	A	Read
Pump 2 Power	W	Read
Pump 2 Motor Temperature	K	Read
Pump 2 Control Source		Read
Pump 3 Status		Read
Pump 3 Alarm Code		Read
Pump 3 Operating Time	h	Read
Pump 3 Speed	%	Read
Pump 3 Line Current	A	Read
Pump 3 Power	W	Read
Pump 3 Motor Temperature	K	Read
Pump 3 Control Source		Read
Pump 4 Status		Read
Pump 4 Alarm Code		Read
Pump 4 Operating Time	h	Read
Pump 4 Speed	%	Read
Pump 4 Line Current	A	Read
Pump 4 Power	W	Read
Pump 4 Motor Temperature	K	Read
Pump 4 Control Source		Read
Pump 5 Status		Read
Pump 5 Alarm Code		Read
Pump 5 Operating Time	h	Read
Pump 5 Speed	%	Read
Pump 5 Line Current	A	Read
Pump 5 Power	W	Read
Pump 5 Motor Temperature	K	Read
Pump 5 Control Source		Read
Pump 6 Status		Read
Pump 6 Alarm Code		Read
Pump 6 Operating Time	h	Read
Pump 6 Speed	%	Read
Pump 6 Line Current	A	Read
Pump 6 Power	W	Read
Pump 6 Motor Temperature	K	Read
Pump 6 Control Source		Read
Pilot Pump Status		Read
Pilot Pump Alarm Code		Read
Pilot Pump Operating Time	h	Read
Pilot Pump Speed	%	Read
Pilot Pump Line Current	A	Read
Pilot Pump Power	W	Read
Pilot Pump Motor Temperature	K	Read
Pilot Pump Control Source		Read
Backup Pump Status		Read
Backup Pump Alarm Code		Read
Backup Pump Operating Time	h	Read
Backup Pump Speed	%	Read
Backup Pump Line Current	A	Read
Backup Pump Power	W	Read
Backup Pump Motor Temperature	K	Read
Backup Pump Control Source		Read
Pump 1 Energy	kWh	Read
Pump 2 Energy	kWh	Read
Pump 3 Energy	kWh	Read
Pump 4 Energy	kWh	Read
Pump 5 Energy	kWh	Read
Pump 6 Energy	kWh	Read
Pilot Pump Energy	kWh	Read
Backup Pump Energy	kWh	Read
Control Register		Read and write
Control Mode		Read and write
Operating Mode		Read and write
Setpoint	%	Read and write
Control Pump 1		Read and write
Control Pump 2		Read and write
Control Pump 3		Read and write
Control Pump 4		Read and write
Control Pump 5		Read and write
Control Pump 6		Read and write
Control Pilot Pump		Read and write
Control Backup Pump		Read and write
Set Tank Fill Start Limit	%	Read and write
Set Tank Fill Stop Limit	%	Read and write
Set Tank Fill Alarm High Limit	%	Read and write
Set Tank Fill Warning Low Limit	%	Read and write
Set Proportional Control Reduction	%	Read and write
Set Proportional Control Max Flow	m³/h	Read and write
Set DDD Sensor 1 Setpoint	bar	Read and write
Set DDD Sensor 2 Setpoint	bar	Read and write
Set DDD Sensor 3 Setpoint	bar	Read and write
Set DDD Sensor 4 Setpoint	bar	Read and write
Set DDD Sensor 5 Setpoint	bar	Read and write
Set DDD Sensor 6 Setpoint	bar	Read and write
Set DDD Sensor 7 Setpoint	bar	Read and write
Set DDD Sensor 8 Setpoint	bar	Read and write
Set DDD Sensor 9 Setpoint	bar	Read and write
Set DDD Sensor 10 Setpoint	bar	Read and write
Control System Feedback Sensor		Read and write
Remote Sensor 1 Input	%	Read and write
Remote Sensor 2 Input	%	Read and write
Remote Sensor 3 Input	%	Read and write
Remote Sensor 4 Input	%	Read and write
Remote Sensor 5 Input	%	Read and write
Remote Sensor 6 Input	%	Read and write
Set Pump 1 Speed	%	Read and write
Set Pump 2 Speed	%	Read and write
Set Pump 3 Speed	%	Read and write
Set Pump 4 Speed	%	Read and write
Set Pump 5 Speed	%	Read and write
Set Pump 6 Speed	%	Read and write
Set Pilot Pump Speed	%	Read and write
Set Backup Pump Speed	%	Read and write
Set Kp		Read and write
Set Ti	s	Read and write
Bus Sensor Measurement ID		Read and write
Bus Sensor Measurement Sequence ID		Read and write
Bus Sensor Measurement Block Size		Read and write
Bus Sensor Measurement Value 1	bar	Read and write
Bus Sensor Measurement Value 2	bar	Read and write
Bus Sensor Measurement Value 3	bar	Read and write
Bus Sensor Measurement Value 4	bar	Read and write
Bus Sensor Measurement Value 5	bar	Read and write
Bus Sensor Measurement Value 6	bar	Read and write
Bus Sensor Measurement Value 7	bar	Read and write
Bus Sensor Measurement Value 8	bar	Read and write
DDD Sensor Battery Warnings		Read
DDD Sensor Low Pressure Warnings		Read
DDD Sensor Missing Data		Read
DDD Sensor Data Warnings		Read
DDD Sensor 1 Pressure Yesterday	bar	Read
DDD Sensor 2 Pressure Yesterday	bar	Read
DDD Sensor 3 Pressure Yesterday	bar	Read
DDD Sensor 4 Pressure Yesterday	bar	Read
DDD Sensor 5 Pressure Yesterday	bar	Read
DDD Sensor 6 Pressure Yesterday	bar	Read
DDD Sensor 7 Pressure Yesterday	bar	Read
DDD Sensor 8 Pressure Yesterday	bar	Read
DDD Sensor 9 Pressure Yesterday	bar	Read
DDD Sensor 10 Pressure Yesterday	bar	Read
DDD Sensor 1 Actual Setpoint	bar	Read
DDD Sensor 2 Actual Setpoint	bar	Read
DDD Sensor 3 Actual Setpoint	bar	Read
DDD Sensor 4 Actual Setpoint	bar	Read
DDD Sensor 5 Actual Setpoint	bar	Read
DDD Sensor 6 Actual Setpoint	bar	Read
DDD Sensor 7 Actual Setpoint	bar	Read
DDD Sensor 8 Actual Setpoint	bar	Read
DDD Sensor 9 Actual Setpoint	bar	Read
DDD Sensor 10 Actual Setpoint	bar	Read
DDD Sensor 1 Latest Data Time		Read
DDD Sensor 2 Latest Data Time		Read
DDD Sensor 3 Latest Data Time		Read
DDD Sensor 4 Latest Data Time		Read
DDD Sensor 5 Latest Data Time		Read
DDD Sensor 6 Latest Data Time		Read
DDD Sensor 7 Latest Data Time		Read
DDD Sensor 8 Latest Data Time		Read
DDD Sensor 9 Latest Data Time		Read
DDD Sensor 10 Latest Data Time		Read
Simulation Event Code		Read and write
Simulation Device Type		Read and write
Simulation Device Number		Read and write
Simulation Action Type		Read and write
Simulation Reset Type		Read and write
Simulation Activate		Read and write
Simulation Active		Read
Slave Minimum Reply Delay	ms	Read and write
Register Offset		Read and write
Software Defined Modbus Address		Read and write
Software Defined Bit Rate		Read and write
Auto Ack Control Bits		Read and write
Software Defined Parity		Read and write
Software Defined Stop Bits		Read and write
Watchdog	s	Read and write
GENIbus LED Off		Read and write
GENIbus CRC Error Count		Read
GENIbus Data Error Count		Read
Actual Modbus Address		Read
GENIbus TX Count		Read
GENIbus RX Count		Read
Unit Family		Read
Unit Type		Read
Unit Version		Read
CIM Version Number		Read
Product Software Version HI		Read
Product Software Version LO		Read
Product Software Day Month		Read
Product Software Year		Read
Total Powered Time	h	Read
Number Of Power Ons		Read
User Register 1		Read and write
User Register 2		Read and write
User Register 3		Read and write
User Register 4		Read and write
User Register 5		Read and write
User Register 6		Read and write
User Register 7		Read and write
User Register 8		Read and write
User Register 9		Read and write
User Register 10		Read and write
User Register 11		Read and write
User Register 12		Read and write
User Register 13		Read and write
User Register 14		Read and write
User Register 15		Read and write
User Register 16		Read and write
User Register 17		Read and write
User Register 18		Read and write
User Register 19		Read and write
User Register 20		Read and write
User Register 21		Read and write
User Register 22		Read and write
User Register 23		Read and write
User Register 24		Read and write
User Register 25		Read and write
User Register 26		Read and write
User Register 27		Read and write
User Register 28		Read and write
User Register 29		Read and write
User Register 30		Read and write
User Register 31		Read and write
User Register 32		Read and write
User Register 33		Read and write
User Register 34		Read and write
User Register 35		Read and write
User Register 36		Read and write
User Register 37		Read and write
User Register 38		Read and write
User Register 39		Read and write
User Register 40		Read and write
User Register 41		Read and write
User Register 42		Read and write
User Register 43		Read and write
User Register 44		Read and write
User Register 45		Read and write
User Register 46		Read and write
User Register 47		Read and write
User Register 48		Read and write
User Register 49		Read and write
User Register 50		Read and write

Loading registers…

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Use cases

Show outlet pressure, flow and power of the booster set for the irrigation water on one dashboard.
Send an email or webhook alert when the booster reports an alarm code, for example water shortage, overpressure or underpressure.
Get an alert when the outlet pressure drops below a threshold while pumps are running, for example because of a blocked filter.
Compare operating hours, power and alarm codes per pump in the history to spot uneven wear and plan maintenance.
Change the pressure setpoint from the portal, or lower it outside irrigation hours with a scheduled automation.
Track energy consumption and pumped volume of the booster set over 365 days of history.

Installation

Fit the CIM 200 module in the back of the CU 352 controller or in the left-hand master pump of a Hydro Multi-E, and set the Modbus address on rotary switches SW6 and SW7.
Leave the DIP switches at 19200 baud, even parity and 1 stop bit, or set the speed and parity that your bus uses.
Connect D1 (positive) and D0 (negative) to the RS485 lines of the ModbusCloud Gateway with screened twisted pair. Switch on the termination only at both ends of the bus.
To control a Hydro MPC from ModbusCloud, set the control source on the controller to From bus (Settings, Secondary functions, Control source).
In ModbusCloud, add a Modbus device with the same address, 19200 baud, 8 data bits, even parity and 1 stop bit, and import this template.
Check that Unit Family reads 21 for a Hydro MPC, or 17 or 39 for a Hydro Multi-E, and that Outlet Pressure shows a plausible value.

Things to watch for

The booster does not answer on RS485. What should I check?

Check that address, baud rate and parity in ModbusCloud match the CIM 200. The default is 19200 baud, even parity and 1 stop bit, and the address comes from rotary switches SW6 and SW7. A flashing red LED1 points to a speed, parity or wiring fault, so check the switches and swap D1 and D0 if needed. Switch on the termination only at the two ends of the bus.

Why do many registers show 65535?

65535 means the booster does not have that value. Pressures, flow, tank levels and temperatures need a sensor, only a few sensor values can be available at the same time, and some values exist only on certain booster types. After changing the sensor setup, power cycle the booster or the CIU box so the module picks up the new sensors.

Why do temperatures read around 290 and the inlet pressure 1 bar too high?

The booster reports temperatures in kelvin with two decimals: subtract 273.15 for degrees Celsius, so 293.15 K is 20 °C. Inlet pressure carries an offset of 1 bar and the tank levels an offset of 100 m. This template shows the values without these offsets, so take them into account when you set an alarm threshold.

The booster ignores the setpoint I write. Why?

The booster only follows Modbus in remote mode. Write 3 to the Control Register for remote and start, or 1 for remote and stop, and check bit 8 of the System Status Word. A Hydro MPC also needs the control source From bus on the controller. Writing registers is off by default per gateway, so request it in the portal first. If you enable the watchdog, make its timeout longer than the polling interval.

How do I convert the setpoint percentage to bar?

In closed loop the setpoint is a percentage of Feedback Sensor Max, in steps of 0.01 %. With a 10 bar pressure sensor, 4 bar is 40 %, a raw value of 4000. Feedback Sensor Unit tells you the unit of the sensor. In open loop the setpoint is a percentage of the maximum performance.

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