Grundfos CIU 501 User Manual

English (GB)
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13.12 Starting the booster system
This section shows how to start the booster system.
In the example, slave address 0x01 is used.
Set the ControlRegister to the following values:
Hence the value to set is 0b0000000000000011 = 0x0003.
Request from master to slave
Example of response from slave to master
If there is no response from the slave, see Fault finding, section
14.1.2 CIM/CIU 200 Modbus communication faults or 14.2.2 CIM/
CIU 260 Modbus connection communication faults.
13.13 Stopping the booster system
This section shows how to stop the booster system.
In the example, slave address 0x01 is used.
Set the ControlRegister to the following values:
Hence the value to set is 0b0000000000000001 = 0x0001.
Request from master to slave
Example of response from slave to master
If there is no response from the slave, see Fault finding, section
14.1.2 CIM/CIU 200 Modbus communication faults or 14.2.2 CIM/
CIU 260 Modbus connection communication faults.
Bit 0: 1 (set the booster system to remote mode)
Bit 1: 1 (start the booster system)
Bit 2: 0 (do not send a reset fault command)
Bit 3: 0 (direction: clockwise rotation)
Bit 4: 0 (do not copy remote settings to local)
Bits 5-15: 0 (do not reset accumulated counters)
Field Value Description
Slave address 0x01 -
Function code 0x06 Write single register
Start address HI 0x00
ControlRegister address:
00101 (0x0065)
Start address LO 0x64
Value HI 0x00
ControlRegister value: 3
(0x0003)
Value LO 0x03
Field Value Description
Slave address 0x01 -
Function code 0x06 Write single register
Start address HI 0x00
ControlRegister address:
00101 (0x0065)
Start address LO 0x64
Value HI 0x00
ControlRegister value:
3 (0x0003)
Value LO 0x03
Bit 0: 1 (set the booster system to remote mode)
Bit 1: 0 (stop the booster system)
Bit 2: 0 (do not send a reset fault command)
Bit 3: 0 (direction = clockwise rotation)
Bit 4: 0 (do not copy remote settings to local)
Bits 5-15: 0 (do not reset accumulated counters)
Field Value Description
Slave address 0x01 -
Function code 0x06 Write single register
Start address HI 0x00
ControlRegister address:
00101 (0x0065)
Start address LO 0x64
Value HI 0x00
ControlRegister value:
1 (0x0001)
Value LO 0x01
Field Value Description
Slave address 0x01 -
Function code 0x06 Write single register
Start address HI 0x00
ControlRegister address:
00101 (0x0065)
Start address LO 0x64
Value HI 0x00
ControlRegister value:
1 (0x0001)
Value LO 0x01

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English