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Does Logos Support Synchronous DataSocket Write Operations?

Primary Software: LabVIEW Modules>>DSC Module
Primary Software Version: 7.0
Primary Software Fixed Version: N/A
Secondary Software: Measurement Studio>>Professional Edition (Base Package)

Problem:
I would like to synchronously write data between two systems using DataSocket and Logos. Does Logos support synchronous DataSocket writes?

Solution:
The Logos protocol only supports asynchronous DataSocket write operations. Only the DSTP, OPC, and file protocols support synchronous DataSocket writes.

In LabVIEW, the ms timeout input for the DataSocket Write function dictates the type of write that will be performed -- a default value of zero (0) for this input specifies that the write operation will be asynchronous. If the Logos protocol is used, the value for this input must be left as the default.

In Measurement Studio, synchronous DataSocket writes are performed using the SyncWrite function. The SyncWrite function is not compatible with the Logos.

Related Links:
Developer Zone Tutorial: Using FieldPoint Logos Server with the LabVIEW DSC Module

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Report Date: 05/11/2004
Last Updated: 01/16/2008
Document ID: 39AM2M7V

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