1 / 7

Experimental Physics and Industrial Control System (EPICS) Alarm Handler (ALH)

Experimental Physics and Industrial Control System (EPICS) Alarm Handler (ALH). Bob Dalesio, August 14, 1999. Alarm Handler Interface into EPICS. Alarm Handler. Channel Access Client. LAN/WAN. Channel Access Server. EPICS Process Database. The Alarm Handler is a channel access client.

osric
Download Presentation

Experimental Physics and Industrial Control System (EPICS) Alarm Handler (ALH)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Experimental Physics and Industrial Control System (EPICS)Alarm Handler (ALH) Bob Dalesio, August 14, 1999

  2. Alarm Handler Interface into EPICS Alarm Handler Channel Access Client LAN/WAN Channel Access Server EPICS Process Database The Alarm Handler is a channel access client Alarm status and severity is detected by the process database and sent to the alarm handler. The Alarm Handler only monitors the alarms that are explicitly specified in its configuration file. The Alarm Handler runs under UNIX and uses a Motif user interface. A Sparc 5 workstation can handle 500 alarm status changes per second.

  3. ALH Files Hierarchical Current Alarm Status Alarm Log File Operator Log File

  4. ALH Group Information Severity of highest alarm in the entire sub-tree Severity of the highest unacknowledged alarm in the sub-tree Status mask Add/cancel monitors Enable/disable alarm events Ack/noack alarm changes Ack/noack transient alarms Log/no log alarm Button for opening the sub-tree Button for giving the operator guidance Button to launch UNIX commands

  5. ALH - Dynamic Group Mask Manipulation Force Process Variable - process variable to monitor to change group status Force Process Value - current value from the process database Force Value - value at which to change the group status mask Force Reset Value - value at which to reset the group status mask Force Mask - Current force mask

  6. ALH - Communication to other tools The alarm handler has no channel access server To give access to the group alarm status - the Severity Name - is the channel in which to put the groups alarm severity.

  7. ALH - Configuration ASCII Format File Create a configuration file by starting ALH with the -config flag

More Related