RSView Supervisory Edition Installation Guide

Handshake bit
A handshake bit is a digital tag that can be used to monitor the status
of an alarm.
When you set up a handshake bit for a tag, the HMI server sets the
handshake bit to 1 when the tag goes into alarm. If the Auto Reset
feature is enabled, the HMI server sets the handshake bit to 0 when the
tag goes out of alarm.
IMPORTANT
The handshake bit must be set up as a digital tag in the
tag database.
For details about setting up a handshake bit, see Help.
Switching handshaking on
By default, handshaking is off. To switch handshaking on, do one of the
following:
• Use the /H parameter with the AlarmOn command.
• Use the HandshakeOn command.
For information about commands, see Appendix A, RSView commands,
or Help.
Alarm events
You can customize and extend the RSView alarm monitoring system
by writing alarm-detection algorithms using PLC ladder logic, custom
programs, or any other appropriate tools. You can then add alarm
events to the RSView alarm subsystem, to respond to the alarmdetection
algorithms for annunciation, logging, printing, and for
display in alarm summaries.
By using a tag name for an alarm event, you can customize the alarm
features of the tag. For example, you can use alarm events to specify an
Creating alarms 11–17