Peak value detector

The peak value detector detects two types of event:

Occurrence of an extreme value of a measured variable (output current, supply voltage, temperature).
Output of a warning message or error message.

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: — Peak value detector example: Maximum of a measured variable

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
Scope	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 IO module in the IO tree.

2. Click on the Process Data tab.

3. Click on the "Outputs" entry in the Sync Manager field.

4. Activate the PDO Assignment (0x1C12) checkbox next to the desired PDOs.

The corresponding process data object "DPO Extended Diag Outputs […]" appears in the IO tree.

5. Click on the "Inputs" entry in the Sync Manager field.

6. Activate the PDO Assignment (0x1C13) checkbox next to the desired PDOs.

The corresponding process data object "DPO Extended Diag Inputs […]" appears in the IO 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.

Two measured variables or messages per EtherCAT P port.
Two global measured variables or messages that concern the complete box (temperatures, supply voltages, sum currents).

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
EtherCAT P port X52	„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
EtherCAT P port X53	„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
EtherCAT P port X54	„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
EtherCAT P port X55	„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
Global	„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:

Peak value "Peak Value 1" and the associate timestamp "Timestamp 1"
Peak value "Peak Value 2" and the associate timestamp "Timestamp 2"