Delta Electronics AH500 Operation Manual page 280

Users can select a parameter type at the left side of the window, and then set the parameters in the table at the
right side of the window. The formats of the tables for the parameter types are the same, but the contents of the
tables are different. Besides, the number of parameters which can be set and the range of setting values
depend on the firmware version of the module which is set.
The description of the columns in a table is as follows. If the color of a table cell is gray, the cell can not be
edited.

Description
The parameter names or descriptions are shown in this column.

Address
Users can set data registers in this column. The parameters in the module which do not need to be
updated constantly are stored in the data registers. If users specify data registers for the parameters in the
module, and the parameters in HWCONFIG are downloaded to the CPU module correctly, the data
registers in the CPU module are synchronized to the parameters in the module when the system operates.
As a result, the users can access the module through the data registers. Accessing a module through the
data registers is more efficient than accessing the module through the instruction FROM/TO. Besides, the
number of data registers that a module has is limited. When users set data registers, they have to refer to
the instructions for the module. While assigning the data registers, it is recommended to set it as latched. If
it is not set as latched, the parameters on the module will be cleared when power-on and an unexpected
error will occur.
As the example below shows, D3000 corresponds to the parameter CH0 Average Time in the Parameter
Setting window for AH04AD-5A. After the parameters in HWCONFIG are downloaded to the CPU module,
users can change the value of the parameter CH0 Average Time by changing the value in D3000 in the
CPU module.
Besides, if users write a value which is not allowed by a parameter into a data register during the operation
of the system, the system will restore the value in the data register and the value of the parameter to the
original values.
*. Please refer to programming manuals for more information about the instruction FROM/TO.
If users want to set a data register, they can click
register address which will be used in the Address window. Please notice that a data register address
8 - 5 4
C h a p t e r 8 H a r d wa r e C o n f i g u r a t i o n
in the Address cell for a parameter, and type a data