Depending on the license you purchased with VTS, up to four sources of information are available to the trace viewer.
Driver Messages for running applications (always available while an application is running)
Information collected includes:
Timestamp, accurate to the nearest thousandth of a second
Direction (Sent or Received from the driver)
Service name
Driver name as entered in the tag
Driver area as entered in the tag
Driver description as entered in the tag
Port name that the driver is attached to
Data included in the communication to/from the driver (a string of hexadecimal values)
RPC Diagnostics (always available)
Information collected for remote procedure calls includes:
Timestamp, accurate to the nearest thousandth of a second
Identification of internal events
The messages routing flag
Sequence number of the message
Direction (To or From the server identified by the IP address)
IP address of the message source or destination
Name of the application sending or receiving the message
Name of the service or machine
Data and parameters of the message
SOAP Messages (available only if you have a license for VTS Web Services)
Information collected includes:
Timestamp, accurate to the nearest thousandth of a second
Message number (large messages might be split across more than one line)
Message status (an HTML error code indicating success or failure)
Source IP address and Port number
Destination IP address and Port number
Indication of whether the message is incoming or outgoing.
The SOAP action (the function call being made)
Message size measured in bytes.
The SOAP-encoded XML message
OPC Server Trace Messages (available only if you have a license for the VTS OPC Server and a running application is using that server)
Information collected includes:
Timestamp, accurate to the nearest thousandth of a second
Event description
Textual OPC item ID being read from or written to. (Often includes the tag name.)
Numeric ID of the OPC property
Write Value the value being written to the tag
Result depending on the nature of the read or write operation, may be one or more of the following:
the value being read or written,
the quality of the data transfer
the number of child nodes
the name of the tag
access rights
type
timestamp
Items such as quality, access rights, type, etc are numeric codes. Please refer to the OPC Server Setup chapter in the Developer's Guide for relevant information.