100
english
7.7
Process Data Info and Configuration
7.7.1 Description
Process data information and configuration offers various
possibilities related to process data:
– Selection of a process dataset specified by the device
– 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 device sends corresponding
diagnosis messages.
Invalid Process Data
Input data (from the device to the master) is only marked
as invalid if the device has the
Failure
device status.
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 taken into account during the
evaluation.
Invalid output data (from the master to the device) is not
processed by the device. The device then operates only
with the last valid data.
7.7.2 ISDU
Name
Index
Subindex Access
Length
Data Type
Data Storage
Default
Process Data Profile
Selection
0x0051 (81)
0
R/W
1 byte
UINT8(ENUM)
Yes
1
Process Data Input
Descriptor
0x000E (14)
0
R
= PD input
data length
UINT8[]
n/a
–
Process Data Output
Descriptor
0x000F (15)
0
R
= PD output
data length
UINT8[]
n/a
–
Last Valid Process Data
Inputs
0x0028 (40)
0
R
Variant 1/2: 1
Variant 3: 17
Variant 4: 6
Variant 5: 17
–
n/a
–
Last Valid Process Data
Outputs
0x0029 (41)
0
R
1
–
n/a
–
Tab. 7-24: Process data info and configuration – ISDU
7
System Functions (continued)
BOS R254K-UUI-RH10-S4
Photoelectric Sensors
Summary of Contents for BOS R254K-UUI-RH10-S4
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