VIPA CP143 TCP/IP, Manual

Page: 138 / 210

Application in combination with TCP/IP CP143
H1 / TCP/IP manual
5-58 Rev. 00/07
Job number (ANR)
A job number must be allocated to each connection that should be used by handler modules.
This number is used to access the connection from the PLC program. The job number
together with the frame offset number determines the connection. This precludes multiple
assignments. The job number and the respective frame offset number must be supplied in the
control program.
Range: 1 to 199
Priority
This parameter specifies the priority of the message for the CP143plus. The priority may
range from 1 (highest priority) to 3 (lowest priority).
When establishing a connection, priority 1 and 2 connections are so-called static
connections. This means that the connection will be re-established, if possible, should it
have been terminated (e.g. by the reset handler module).
When establishing a connection, priority 3 connections are so-called dynamic connections.
In this case the connection is established by means of a job that initiates the application for
the respective connection. Once a connection is established, it exists until it is terminated.
The CP will not attempt to re-establish the connection.
Jobs with a priority of 1 differ from those with priority 2 and 3 in the manner that the job is
processed internally. The size of the user data for priority 1 jobs is limited to the pre-set
block size. Data can not be blocked by means of ALL handler modules.
These statements only apply to connection oriented jobs that make use of TCP.
Range: 1 to 3