Peak value detector

The peak value detector detects two types of event:

The value of the maximum extreme value and the time of occurrence in input variables are available at all times.

The following diagrams illustrate the mode of operation of the peak value detector taking the example of the maximum of a measured variable:

Peak value detector 1:

Activate peak value detector

You have to activate additional process data objects in the process image in order to be able to use the peak value detector:

Scope

Process data objects for control

Process data objects for evaluation

Index
(Sync Manager SM2)

Name

Index
(Sync Manager SM3)

Name

EtherCAT P port X52

0x1601

DPO Extended Diag Outputs Channel 1

0x1A01

DPO Extended Diag Inputs Channel 1

EtherCAT P port X53

0x1603

DPO Extended Diag Outputs Channel 2

0x1A03

DPO Extended Diag Inputs Channel 2

EtherCAT P port X54

0x1605

DPO Extended Diag Outputs Channel 3

0x1A05

DPO Extended Diag Inputs Channel 3

EtherCAT P port X55

0x1607

DPO Extended Diag Outputs Channel 4

0x1A07

DPO Extended Diag Inputs Channel 4

Global

0x1609

DPO Extended Diag Outputs Device

0x1A09

DPO Extended Diag Inputs Device

Proceed as follows:

1. Double-click on the EP9224-0037 I/O module in the I/O tree.
2. Click the Process Data tab.
3. Click "Outputs" in the "Sync Manager" box.
4. Activate the PDO Assignment (0x1C12) checkbox next to the desired PDOs.
The corresponding process data object "DPO Extended Diag Outputs […]" appears in the I/O tree.
5. Click "Inputs" in the Sync Manager box.
6. Activate the PDO Assignment (0x1C13) checkbox next to the desired PDOs.
The corresponding process data object "DPO Extended Diag Inputs […]" appears in the I/O tree.
Result: The process data objects for controlling and evaluating the peak value detector are activated.

Select measured variables/messages

You can select ten measured variables or messages for which events are to be detected:

The following table shows the CoE indices in which the measured variables or messages can be selected:

Scope

Input variables

CoE Index

EtherCAT P port X52

"DPO Extended Diag Inputs Channel 1"
   > "Peak Value 1"
   > "Timestamp 1"

8000:15

"DPO Extended Diag Inputs Channel 1"
   > "Peak Value 2"
   > "Timestamp 2"

8000:16

EtherCAT P port X53

"DPO Extended Diag Inputs Channel 2"
   > "Peak Value 1"
   > "Timestamp 1"

8010:15

"DPO Extended Diag Inputs Channel 2"
   > "Peak Value 2"
   > "Timestamp 2"

8010:16

EtherCAT P port X54

"DPO Extended Diag Inputs Channel 3"
   > "Peak Value 1"
   > "Timestamp 1"

8020:15

"DPO Extended Diag Inputs Channel 3"
   > "Peak Value 2"
   > "Timestamp 2"

8020:16

EtherCAT P port X55

"DPO Extended Diag Inputs Channel 4"
   > "Peak Value 1"
   > "Timestamp 1"

8030:15

"DPO Extended Diag Inputs Channel 4"
   > "Peak Value 2"
   > "Timestamp 2"

8030:16

Global

"DPO Extended Diag Inputs Device"
   > "Peak Value 1"
   > "Timestamp 1"

F80E:15

"DPO Extended Diag Inputs Device"
   > "Peak Value 2"
   > "Timestamp 2"

F80E:16

Reset

Resetting the peak value detector leads to the current measured value and the current timestamp being adopted as the new peak value and new timestamp.

You can reset the peak value detector for each port and for the global peak values individually.

To do this, apply a positive edge to the respective output variable "Reset Extended Diag Data".

Evaluation

The peak values and timestamp can be found in the process data objects "DPO Extended Diag Inputs" as input variables: