Balluff BVS ID-M1280 F1 Series, Configuration Manual

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BVS ID-M1280xF1-xx-xxx
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4.4.9.16 Process Data Info and Configuration
Description
Process data information and configuration offers various possibilities related to process data:
Selection of a process dataset specified by the BVS ID
Information about the structure of the input and output data
Information about the last valid value for input and output data
As a diagnosis function, monitoring of the updates of certain process values is available. If these are not
updated in the specified time, the
BVS ID sends corresponding diagnosis messages.
Invalid Process Data
Input data (from the device to the master) is only marked as invalid if the BVS ID has the Failure device status.
Invalid output data (from the master to the device) is not processed by the BVS ID . The BVS ID then operates
only with the next valid data. Running commands will be possibly aborted.
ISDU
Name Index
Subinde
x
Acces
s
Lenght Data Type
Data
Storage
Default
Process Data Input
Descriptor
0x000E
(14)
0 R
96
bytes
UINT8[ ] n/a
Process Data Output
Descriptor
0x000F
(15)
0 R
96
bytes
UINT8[ ] n/a -
PD Description
This parameter is used to specify the structure of the currently selected process data profile for input and output
data. The individual process data variables are described.
The total list is possible via subindex 0, a single entry is possible using a specific subindex. Subindex 1
corresponds to the least significant (or the element most recently transferred in the process data stream). When
reading out the entire list, this element is transferred first.
The length of the list is dependent on which process data profile is selected. A single element has a length of 3
bytes.
Byte number Contents Values
Byte 1 Data type
0: OctetStringT
1: Set of BoolT
2: UIntegerT
4: Float32T
5…255: reserved
Byte 2 TypeLength 0…255 bits
Byte 3 Bit offset 0…255 bits
NOTE
In the case of individual pieces of faulty data, the data is not marked as invalid but is instead replaced
by substitution values or error codes. This is to be considered during the evaluation.
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