Back

Topic

[KB277]HDS trendgroup update rate applied to timestamped protocols should be set to 0s

Tags: HDS

Historical data
16 years ago
By RM
Options
Print
Applies to:

PcVue version 8.10 SP4 onwards.
Summary:

HDS trendgroup update rate applied to timestamped protocols should be set to 0s
Details:

This concerns only trends. When archiving trends with timestamp information as provided by a timestamped protocol or OPC, the trendgroup update rate should be set to 0s if you want to store the exact time and date transmitted by the PLC.

If the trendgroup > 0s, the exact behaviour is the following:

  • The Variables Selector displays the exact PLC timestamp
  • The field [CHRONO] (and [TS] if used) will respect the update rate configured
  • However, the field [TS TYPE] is filled with value 1, meaning “PLC” information

 

Created on: 17 Dec 2010 Last update: 13 May 2024