VTS logs more than just alarm data in its Alarms.log files. Also stored is data related to events concerning security, operator control actions, remote configuration, and the Alarm Dialer system.
What Operator Control Actions Are Logged?
VTS logs events related to operator control actions to the alarm history. The following actions will result in an entry in the History alarm list:
• Changing the value of an output tag
• Transmitting data via a modem tag
• Receiving data via a modem tag
What Information is Logged?
For each operator control action-related event in the History list, the following information is displayed:
• The name of the PC on which the security event occurred (e.g. [WorkstationX])
• The name of the tag that the operator used to perform the control action
• The username of the user who was logged on when the control action occurred (e.g. NShannon)
What Format Is Used in the History List for Operator Control Actions?
• The Priority for operator control action-related events is always "Event"
• The Area for operator control action-related events is always "OperatorLog"
• Workstation names are enclosed in square brackets (e.g. [WorkstationX])
• Usernames are enclosed in square brackets (e.g. [NShannon])
• Config.ini labels are used for specific operator control action-related events
If the message is less than 80 characters, the following format is used:
<WorkstationName> <Username> Changed <TagName> <TagDescription> from <PreviousTagValue> to <NewTagValue>
For example:
[Workstation19] [JSmith] Changed DO_2 "Motor Power" from 0 to 1
If the message exceeds 80 characters, the tag description is shortened, and the following format is used:
<WorkstationName> <Username> set <TagName> <TagDescrip…> to <NewTagValue>
For example:
[Stn1] [MCasagrande_Faulkner] set DigitalOutput_16_02 "Pump 16 Controller…" to 0
If the message exceeds 80 characters, resulting in the shortened tag description being truncated to less than 4 characters, the tag description is removed, and the following format is used:
<WorkstationName> <Username> set <TagName> to <NewTagValue>
For example:
[Workstn5] [NLeBlanc] set AO_3 to 23