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Values of communication lines

An object of Line type can acquire the following values in the D2000 system:

Object valueDescription
TrueThe line is working.
FalseThe line is not working.

Note: Solving line failure problems depends on the line category. Each line generates the output file called line_name.log placed in the subdirectory TRACE of the application directory. The file contains detailed information about the error.


The definition of working of the line depends on its category:

Line categoryFunctioning line
LonWorks

The LonWorks dynamic library (ldv32.dll) was initialized and the specialized LON device could be opened.

MOXA IP Serial Library

The Moxa dynamic library (Ipserial.dll) was initialized, a connection to the specified Moxa devices was established, and specified serial port parameters were set.

RFC2217 Client

A TCP connection with the RFC2217 server was established and possibly the parameters of the serial port were queried.

Serial
Serial Line Redundant
System&Line Redundant

The serial port was open and the required serial port parameters were set.

SerialOverUDP Device Redundant
SerialOverUDP Line Redundant
SerialOverUDP System&Line Redundant

Binding to the specified local UDP port(s) was successful.

TCP/IP-TCP
TCP/IP-TCP Redundant

A TCP connection was established (client protocols), resp. binding to the specified local TCP port(s) was successful (server protocols).

TCP/IP-UDP

Binding to the specified local UDP port was successful.

Note:


Object value of category Communication lines can have set also the flags (user attributes). Currently, they are implemented for the following combinations of line categories and communication protocols:

Related pages:

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