Internal relationship in an OPC application

autobox · New User Joined: 19 Aug 2005 Posts: 51

Hi All,

Supposed that there are 2 operations (OPERA and OPERB) in an application. If I want OPERA run before OPERB, I need to define some relationship between them. For OPC/TWS, there are 2 kinds of relationshiops, namely predecessor and successor.

For my request (OPERA -> OPERB), which of below is correct?
1. only define OPERB as the successor of OPERA
2. only define OPERA as the predecessor of OPERB
3. define both of 1 & 2.

Thanks.

PeterHolland · Posted: Tue Apr 24, 2012 1:03 pm

You define predecessors.

autobox · New User Joined: 19 Aug 2005 Posts: 51

So for my case, a predecessor (a single direction relationship) is enough, right?

PeterHolland · Posted: Tue Apr 24, 2012 5:35 pm

Read the TWS Managing The Workload manual, chapter 8.
Or for what its worth, the whole manual.

autobox · New User Joined: 19 Aug 2005 Posts: 51

Thanks for your help!