Danfoss ECL Comfort 210 Instructions Manual page 26

Instructions ECL Comfort 210 / 310, communication description
7.1.1.2 Read parameters (0x04)
This function is used to read the value of an ECL Comfort
parameter number. Values are always returned as integer
values and must be scaled according to the parameter
definition.
Requesting a quantity of more than 123 parameters gives an
error response. Requesting non-existing parameter number(s)
will give an error response.
Request
Function code
Start PNU
Quantity N of PNU
Response
Function code
Byte count
PNU data value
Error
Function code
Error code
The request/response is Modbus compliant reading a sequence of parameters (Read input register).
7.1.1.3 Write parameter number (0x06)
This function is used to write a new setting value to an ECL
Comfort parameter number. Values must be written as
integer values and must be scaled according to the parameter
definition.
Attempts to write a value outside the valid range will give an
error response. The minimum and maximum values must be
obtained from the instructions for ECL Comport controller.
Request
Function code
Write PNU
New PNU value
Response
Function code
Write PNU
New PNU value
Error
Function code
Error code
The request/response is Modbus compliant when writing a parameter (Write single register).
Danfoss District Energy
1 byte
2 bytes
2 bytes
1 byte
1 byte
2 bytes
1 byte
2 bytes
1 byte
2 bytes
2 bytes
1 byte
2 bytes
2 bytes
1 byte
2 bytes
VI.LG.V3.02
0x04
0x0001 – 0xffff
0x0001 – 0x007B
0x04
2 - 246
0x0000 – 0xffff
0x84
1, 2, 3 or 4
0x06
0x0001 – 0xffff
0x0000 – 0xffff
0x06
0x0001 – 0xffff
0x0000 – 0xffff
0x86
1, 2, 3 or 4
DEN-SMT/DK
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