Grundfos CIU 501 User Manual

English (GB)
16
9. Modbus register addresses
9.1 Register block overview
The Modbus registers are grouped in the following register blocks:
All addresses contain registers. Some are bit-interpreted, while
others are 16-bit values or high-/low-order parts of 32-bit values.
9.2 CIM configuration register block
Registers in this block can be read by means of function codes 0x03 and/or 0x04. They can be written as holding registers with function
codes 0x06 and 0x10.
Start address Register block Permissions Description
00001 CIM configuration R/W Configuration of the CIM module.
00021 CIM status R Status registers for the CIM module.
00101 Control R/W Registers for control of the booster system.
00201 Status R Registers for reading mode status from the booster system.
00301 Data R Registers for reading measured data values from the booster system.
00401 Pump 1 R Registers for pump 1 data and status.
00411 Pump 2 R Registers for pump 2 data and status.
00421 Pump 3 R Registers for pump 3 data and status.
00431 Pump 4 R Registers for pump 4 data and status.
00441 Pump 5 R Registers for pump 5 data and status.
00451 Pump 6 R Registers for pump 6 data and status.
00461 Pilot pump R Registers for the pilot pump data and status.
00471 Backup pump R Registers for the backup pump data and status.
00701 Alarm simulation R/W Registers for simulating alarms and warnings.
00751-00800 User registers R/W This area is for device labelling by the user.
Address Register name Description
CIM
200
CIM
260
CIM
500
00001 SlaveMinimumReplyDelay
The minimum reply delay from the slave in ms.
Value range: 0-10000, i.e. up to 10 seconds reply delay. This delay is
typically used in conjunction with a modem. The delay value is stored
in the device and remains after a power-off. The delay set here is
added to the internal delay in the device.
Default setting: 0.
●--
00002 RESERVED
00003 SoftwareDefinedModbusAddress
If the Modbus address switch has not been set correctly, meaning
outside the 1 to 247 range, the value in this register is used as Modbus
address. See section 5.3 Modbus address selection. The value is
stored in the device and remains after a power-off.
Note that for CIM 200, this value is used only when you have set the
transmission speed to "software-defined" on DIP switches SW4 and
SW5. Otherwise, CIM 200 ignores it.
●●●
00004 SoftwareDefinedBitRate
Modbus software-defined value for transmission speed.
The software-defined value for transmission speed is stored in the
device and remains after a power-off.
0: 1200 bits/s
1: 2400 bits/s
2: 4800 bits/s
3: 9600 bits/s
4: 19200 bits/s
5: 38400 bits/s.
Note that for CIM 200, this value is used only when you have set the
transmission speed to "software-defined" on DIP switches SW4 and
SW5. Otherwise, CIM 200 ignores it.
●--
00005 AutoAckControlBits
Used to select the behaviour of control bit acknowledgements from the
CIM/CIU.
0: Disabled.
Control bits are not automatically lowered when accepted by the
device. The user must lower the triggered control bit manually before
the control bit can be triggered again.
1: Enabled.
Control bits are automatically lowered when accepted by the device.
The user does not have to lower it manually (default).
●●●
00006 RESERVED
00007 RESERVED

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English