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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 accessable 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
three 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
Tab. 7-25: Process data info and configuration – PD Description
Last Valid Process Data
This parameter indicates the most recently valid input or
output data of the device. The first transferred byte in the
process data (MSB) is transferred first. This is an exact
representation. Access occurs via subindex 0.
7
System Functions (continued)
7.7.3 Events
PD Update Timeout
With special process data values, the device automatically
checks whether the values are updated in the time period
specified by the device. If an update timeout is triggered as
a result, this is output via the following diagnosis
messages:
Event
Code
Event Type Description
Device Status
0x1851
(6225)
Notification
Process Data
Update
Timeout – for
information
purposes
only
0 – Device is
operating
properly.
0x1852
(6226)
Warning
Multiple
Process Data
Update
Timeout – for
information
purposes
only
0 – Device is
operating
properly.
Tab. 7-26: Process data information and configuration – Events
PD Profile Selection after Change of Variant
If the variant of the device is changed, the currently set
profile is retained.
In the case that the corresponding PD profile is not valid
for this variant, the default profile for the corresponding
variant is selected.
Event
Code
Event
Type
Description
Device Status
0x1850
(6224)
Notification
Process data
profile
selection
cannot be
used – default
value is used.
0 – Device is
operating
properly.
Tab. 7-27: Process data information and configuration – Events
BOS R254K-UUI-RH10-S4
Photoelectric Sensors
Summary of Contents for BOS R254K-UUI-RH10-S4
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