Grundfos CIM 200, User Manual

Page: 79 / 94

English (GB)
79
15.6 Interlocking the pit
This shows how to interlock the CU 36X.
In the example, slave address 0x01 is used. Note that the register
is reset by the CIM 200 when the command has been
acknowledged. The value is only triggered on rising edge.
The register on address 00101 is set to the following:
Hence the value to set is 0b000000000010000 = decimal 16 =
0x0010.
Request from master to slave
Example of response from slave to master
If there is no response from the slave, see section
16.1.2 CIM
200 Modbus communication faults
.
Bit Description
0 0 (do not reset)
1 0 (do not reset alarms)
2 0 (do not reset history)
3 0 (do not reset event log)
4 1 (interlock the pit)
5 0 (set pit in "Auto" mode)
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
= 16 (0x0010)
Value LO 0x10
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
= 16 (0x0010)
Value LO 0x10
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