How Do You Access The Clipx Objects - HBM ClipX Bedienungsanleitung

9.7.1

How do you access the ClipX objects?

See also „Data transfer from the controller to the ClipX" on page
from the ClipX to the controller" on page 125
fieldbus" on page
To address the objects use container objects in the cyclic data.
The functions of the object dictionary are used to write directly to the data
object. Normally no check is made for permissible values. Impermissible
values can result in the ClipX malfunctioning however.
If you are uncertain about any setting, use your web browser to make it. Then
read out the value via the relevant object in the object dictionary.
You can only read or write data objects up to 32 bits in size.
Note for objects of the floating comma data type (REAL, FLOAT)
In the device description files (GSD, ESI, ESD) the data type of the relevant object value
is UDINT. If you want to transfer a floating-comma value, you must copy the value bit-
by-bit between UDINT and REAL variable (FLOAT).
To do so, copy the value without a type conversion (cast operation) to value!
The table below explains the bit assignment.
The following table shows the bit assignment of the object value (value field) when
accessing the object dictionary.
Bit 31 ... 24
ClipX
Operation via fieldbus
164.
Bit 23 ... 16
Data object types UDINT, DINT, REAL, FLOAT
Not used
Not used
and „Examples of object access via the
Bit 15 ... 8
Data object types INT, UINT
122, „Data transfer
Bit 7 ... 0
Data object types
SINT, USINT
161