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[KB194]Messages 16724 and 16725: Create, %s, No write rights on OPC item

Tags: Error, Error ID, Error messages numbers

Audit and diagnostic
14 years ago
By RM
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Applies to:

PcVue all versions.
Summary:

This article explains how to deal with error messages 16724 and 16725.
Details:

French PcVue: “16724, OPC, Création, %s, Pas de droits d’écriture sur l’élément OPC”
English PcVue: “16725, OPC,Create ,%s, No write rights on the OPC item”

%s is the name of the PcVue variable referenced by this message.

Explanation

This warning message warns that you do not have rights to write to an OPC item. This message can appear in the Event Viewer when you create a new OPC variable, and each time you start PcVue after that.

There are two possible reasons for the message :

  • In PcVue, you have specified control for an OPC variable, and the item corresponding to the variable is read-only.

    Example: For a MODBUS server, you have memory spaces in Read Only, and memory spaces in Read/Write. If you link a control PcVue variable with a read-only variable

  • It can be due to a problem with users’ rights on OPC.

This message is generally followed by the error message 16708 or 16709 when you try to write to the OPC item.

Created on: 19 Nov 2010 Last update: 13 May 2024