Danfoss Modbus RTU, Руководство пользователя

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VLT is a registered Danfoss trade mark MG.10.P2.22
Memory
Mapping Parameter Values
Standar Standar
Standar Standar Standard Data T
d Data T
d Data T d Data T d Data Types
ypes
ypes ypes ypes
Standard data types are int16, int32, uint8,
uint16 and uint32. They are stored as 4x
registers (40001 – 4FFFF). The parameters are
read using function 03
HEX
“Read Holding
Registers.” Parameters are written using
function 6
HEX
“Preset Single Register” for 1
register (16 bits), and function 10
HEX
“Preset
Multiple Registers” for 2 registers (32 bits).
Valid sizes to read are 1 register (16 bits) and
2 registers (32 bits).
Nonstandar Nonstandar
Nonstandar Nonstandar Nonstandard Data T
d Data T
d Data T d Data T d Data Types
ypes
ypes ypes ypes
Nonstandard data types are text strings and
are stored as 4x registers (40001 – 4FFFF).
The parameters are read using function 03
HEX
“Read Holding Registers” and written using
function 10
HEX
“Preset Multiple Registers.”
Valid sizes to read are 1 register (2 characters)
through 10 registers (20 characters). See
Text
Blocks section in this manual for truncation/
space fill rules. IND (Modbus Register 1) must
be written with a value of 0400
HEX
(read) or
0500
HEX
(write) prior to reading or writing a text
string.
Bit Setting 0 1
00 0 Preset Ref. LSB
01 0 Preset Ref. MSB
02 1 DC Brake no DC Brake
03 0 Coast Sto no Coast Stop
04 1 "Quick" Stop no "Quick" Sto
051 Freeze Freq. no Freeze Freq.
06 0 Ramp Stop Start
07 0 no Reset Reset
08 0 no Jo Jog
09 0 no function
10 1 Data Not Valid Data Valid
11 0 Relay 1 OFF Relay 1 ON
12 0 Relay 2 OFF Relay 2 ON
13 0 Setup LSB
14 0 Setup MSB
150 no Reversing Reversing
Control Word Bit Descriptions FC Protocol
Control
Word Bit
Descriptions
Conversion
The different attributes for each parameter can
be seen in the section on factory settings.
Since a parameter value can only be
transferred as a whole number, a conversion
factor must be used to transfer decimals.
Example: Example:
Example: Example: Example:
Parameter 201:
Minimum Frequency ,
conversion factor 0.1. If parameter 201 is to
be set to 10 Hz, a value of 100 must be
transferred, since a conversion factor of 0.1
means that the transferred value will be
multiplied by 0.1. A value of 100 will, therefore,
be understood as 10.0.
Index Index
Index Index Index
Factor Factor
Factor Factor Factor
74 3.6
2 100.0
1 10.0
0 1.0
-1 0.1
-2 0.01
-3 0.001
-4 0.0001
Conversion
Factor