The WITS0 Passive communication driver implements communication with servers running WITS Level 0 communication. This driver only listens to information from the server.
Communication Driver Name : WITS0 Passive
Implementation DLL : T.ProtocolDriver. WITS0Passive.dll
Protocol : WITS Level 0 Passive
Interface : TCP/IP, UDP, or RS232
PLC types supported: WITS servers outputting Level 0 data streams
Multi-threading: User defined
Max number of nodes: User defined
PC Hardware requirements: Standard PC Ethernet interface board
Supported Operands: Any tag defined on target system
Channel Configuration
Settings
AcceptUnsolicited Messages: Must be checked to enable this driver
Listening Port: Listening port for the TCP or UDP messages
Node Configuration
The address is necessary, as this driver works in listening mode only. When connecting to multiple devices, multiple channels shall be defined
Point Configuration
Settings
The syntax for the communication point is: RecordID:ItemID
Where:
- RecordID = ranges from 01 to 99, according to the WITS Level 0 record definition
- ItemID = ranges from 01 to 99, according to the WITS Level 0 record definition
Troubleshoot
The status of the driver's execution can be observed through the diagnostic tools, which are:
• Trace window
• Property Watch
• Module Information
The above tools indicate if the operations have succeeded or have failed. A status of 0 (zero) means communication is successful. Negative values indicate internal driver errors, and positive values indicate protocol error codes.
