Fieldbus Equivalent; Pointer Parameter Format In Fieldbus Communication; 32-Bit Integer Value Pointers - ABB ACSM1 Manual

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Fieldbus equivalent

Serial communication data between fieldbus adapter and drive is transferred in
integer format. Thus the drive actual and reference signal values must be scaled to
16/32-bit integer values. Fieldbus equivalent defines the scaling between the signal
value and the integer used in serial communication.
All the read and sent values are limited to 16/32 bits.
Example: If
an integer value of 10 corresponds to 1%.

Pointer parameter format in fieldbus communication

Value and bit pointer parameters are transferred between the fieldbus adapter and
drive as 32-bit integer values.

32-bit integer value pointers

When a value pointer parameter is connected to the value of another parameter, the
format is as follows:
Name
Value
Description
For example, the value that should be written into parameter
to change its value to
0100 0000 0000 0000 0000 0001 0000 0111 = 1073742087 (32-bit integer).
When a value pointer parameter is connected to an application program, the format
is as follows:
Name
Value
Description
Note: Value pointer parameters which are connected to an application program
cannot be set via fieldbus (ie, read access only).
Parameter data
32.04 MAXIMUM TORQ REF
30...31
Source type
1
Value pointer is
connected to
parameter/signal.
1.07 DC-VOLTAGE
30...31
Source type
2
Value pointer is
connected to application
program.
is set from external control system,
Bit
16...29 8...15
Not in use Group
- 1...255
- Group of source
parameter
is
Bit
24...29
Not in use
-
-
0...7
Index
1...255
Index of source
parameter
33.02 SUPERV1 ACT
0...23
Address
24
0 ... 2 -1
Relative address of
application program
variable