Commissioning and configuration
EP9224-0037
37
Version: 1.0
4.4.2
Data logger
The data logger enables the recording of measured values. The recording can be used for the analysis of
errors.
Once the recording has been started, it saves all measured values continuously in a ring buffer. The
recording stops automatically if a protective function signals an error. With the recorded measured values
you can trace the events that led to the error.
Activate control
You have to activate additional process data objects in the process image in order to be able to use the data
logger:
• PDO 0x1610 (Sync Manager SM2 "Outputs")
• PDO 0x1A10 (Sync Manager SM3 "Inputs")
Proceed as follows:
ü
Requirement: an EP9224-0037 is appended in the IO tree in TwinCAT.
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 entry "0x1610".
ð
The process data object "LOG Control" 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 entry "„0x1A10".
ð
The process data object "LOG Status" appears in the IO tree.
ð
Result: The process data objects for controlling the data logger are activated.
Parameterization
The sampling rate for the recording can be selected in the index 8040:11 "Sampling Rate".
Start recording
The output variable "Start Logger" is located in the process data object "LOG Control". The recording is
started by a positive edge on this output variable.
If the recording is running, the Status bit
"LOG Status" > "Status" > "Logger Running"
is set.
Stop recording
The recording stops in two cases:
• if a protective function signals an error.
• upon a positive edge on the output variable
"LOG Control" > "Control" > "Stop Logger".
If the recording has stopped, the input variable
"LOG Status" > "Status" > "Logger Running"
has the value "0".
