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[KB4]How to relinquish a value with priority in BACnet object from PcVue using MBS OPC Server

Data acquisition
15 years ago
By GM
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Applies to:

PcVue 9.0 (MBS OPC Server only).

This article may contain obsolete references.
Summary:

This article explains how to relinquish a value with priority in bacnet object from Pcvue using MBS OPC server
Details:

PCVUE part

As described below Bacnet allows to send a value with a priority. To choose the priority the value should be sent to a specific memory address. The bacnet device will then manage the final value to apply(see below).

To relinquish a value with its priority the value should be set to “NULL”.

Pcvue cannot write “NULL” in a register. So it’s necessary to create a text variable, link at the same address than the register, and set its value to “NULL”.

This solution is ok when using MBS OPC Server only.

We don’t have coded a such feature in PcVue V9.0

See attachment for details

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Created on: 16 Feb 2010 Last update: 13 May 2024