Charm Trigger

The Charm Trigger initiates a data transfer when new data is available on the Charm device. Unlike OPC Router 3, which provided the transfer object and trigger separately, both functions are now combined in the Charm Trigger object—meaning the trigger also serves as the data source.

The individual properties are:

Property	Description
Device Type	Type of Charm reader. The “EZ,” “EZ-M,” and “EZ-M 2” devices are predefined. However, you have the option to define additional device types using an XML file at .
Message Type	“Message Received” is set by default. If you switch to “Heartbeat,” an internal device handles message reception in the background.
Port	Port on this computer (running the OPC Router) to which the Charm device sends its data. In general, a separate port must be created for each type of Charm device. Recommended procedure: All Charm devices of the same type send data to the same port. A single connection is created in the OPC Router for this purpose. In addition to the results, the OPC Router also transfers information about the sending Charm device to the database. The logic for processing the results resides in the database (or another transfer destination). However, if a separate connection is to be created for each Charm device, a separate port must also be available for each device.
Available/Used Fields	Select the fields you want to use for your connection from the available fields. Use the arrows to apply or undo your selection.
Trigger transfer errors for invalid messages	Enable to trigger a transfer error for invalid messages. Disable this to ignore invalid messages (for example, to intercept invalid messages in another connection using the Charm Error Trigger; see that section).

Confirm your entries by clicking “OK.”

In addition to the message fields you selected from the available fields, further information about the received message is automatically displayed (message information). Under “Message Information,” the complete message, the IP address of the Charm device, the timestamp, and—in the case of multiple consecutive messages—a sequential numbering are displayed.

Message Information

Property	Description
Complete Message	The complete message from the Charm device
Client Address	IP address of the Charm device
Message Index	If multiple messages are sent simultaneously, the OPC Router numbers the individual messages.
Timestamp	Timestamp of the message (UTC)

note

Note: The Charm device must be configured with the IP address of the computer running the OPC Router, along with the port number specified here. The Charm device must send its data to this address. The OPC Router then transmits the data in individual records.

Fields of the predefined Charm device types

Name	EZ	EZ-M	EZ-M2	Description
Answer	X	X		Numerical test result, including unit of measurement where necessary
Assay	X	X		Sample type
ChannelNumber	X	X	X	EZ channel number
CommodityName		X	X	Raw material/item
controlLINE	X	X	X	Intensity of the control line
CurrentCommoditySelectIndex		X
CurrentDilutionSelectIndex		X
CurrentMatrixSelectIndex		X
CurrentTestSelectIndex		X
Date	X	X	X	Date of the test
DE_Name		X	X
Dirt	X	X	X	Degree of lens contamination
FailCode	X	X	X	Error code for a failed test
Flow	X	X	X	Flow value (correct application of milk to the test strip)
Interpretation	X	X	X	Interpretation of the test result (positive, negative, etc.)
InterpString	X			(Interpretation in newer firmware)
LotNumber	X	X		Lot number (as entered on the device)
MatrixNumber			X	Matrix number of the test result
Mode	X	X	X	Mode of the Charm device
OperatorID	X	X		Operator ID (as entered on the device)
Ratio		X	X	Ratio of extraction solvent to extraction
Remmisions	X	X
Result	X	X	X	Test result (positive, negative, invalid)
RFID			X
SampleID	X	X	X	Test ID (as entered on the device)
StructVersion	X	X	X
testLINE	X	X	X	Intensity of the test line
TestOutputName	X	X	X
TestTemperature	X	X	X	Incubator temperature at the time of the test
TestType			X
Time	X	X	X	Time of the test
TipBlue	X	X		Displays the value “Blue” when the test color has been identified
TipGreen	X	X		Displays the value “Green” when the test color has been identified
TipRed	X	X		Displays the value “Red” when the test color has been identified
UnitSN	X	X	X
XLine	X	X	X	Intensity of the X Line
YLine	X	X	X	Intensity of the Y line
ZLine	X	X	X	Intensity of the Z line