ICP DAS USA PMC series, Руководство пользователя

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ICP DAS PMC/PMD Series User Manual
115
would like to retrieve from the Start Address.

Type: The system support 6 kinds of data type setting for Input
Register of Modbus RTU module. The 6 Data Type options are
“16-bit Signed Integer”, “16-bit Unsigned Integer”, “16-bit
Hex”, “32-bit Signed Long”, “32-bit Unsigned Long”, and
“32-bit Floating Point”. If the “16-bit HEX” option is selected,
it is required to setup the corresponding scale parameters for
linear transformation from HEX value to real value. The
PMC/PMD will retrieve the HEX value and transfer it to real
value in floating point format, this real value could be included
in the IF-THEN-ELSE rule for edition.
If users select “32-bit Signed Long”, “32-bit Unsigned Long”,
or “32-bit Floating Point”, the option “Inverse(Big Endian)”
will appear. Enable “Inverse(Big Endian)” to receive the data in
big endian format correctly.

After finishing the “Start Address”, “Data Number”, and “Type”
setting, click on “Add” button. A new Input Register address
block will be added to the Modbus address mapping table
(shown as below). All added address blocks will be located in
sequences staring from the Starting Address (The address
number on the first column of the “Local Address” indicates the
local Modbus address of PMC/PMD to keep the Input Register
data.).
Figure 7-48 shows an example about Input Register setting for a
Modbus RTU module. The starting Modbus address of the Input
Register block is 30010(30000 + 10), it requires to set 3
continuous Input Register data in the setting, and the data type
is “32-bit Floating Point”. So that these retrieved Input Register
data will be kept in PMC/PMD Address 30300, 30302, and