You can use the Analog Alarm block to:
- Read and write analog values at set time intervals from an I/O address, such as a PLC register.
- Perform smoothing, signal conditioning, and alarm-limit checking.
- Define an alarm value and priority for each type of alarm.
- Close a Digital block when an alarm occurs.
- Re-issue an alarm within the time defined in the Re-alarm Time field, as long as the block is still in a valid alarm state OR the Re-alarm Time is not disabled.
- Provide intelligent alarming by suspending alarm processing within this block or multiple blocks based on a process condition.
- Acknowledge alarms from a remote site.
- Enable a block to attempt to write the contacts with every scan, even if the value being written is unchanged.
- Separate the original alarm condition from the COMM alarm, and return the AA block to the same state as it was prior to a COMM alarm.
- Assist in control situations such as direct digital control when chained to a PID or On-Off Control block.
- Pass values to other blocks through the Next Block field.
