DAANG block Module 11,03,04 Block 427 S20 has both de-alarm and return alarm set, return alarm overrides
This message means that one aspect of alarming has been overridden. Alarming may not be configured correctly.
When the value of S20 is a sum of both 32 and 64, (among other things), then both bit 5 and bit 6 are active. Bit 5, de-alarm enabled, and bit 6, return alarm enabled, cannot co-exist. Therefore, when both 32 and 64 are in the S20 value, bit 6 overrides bit 5.
In this case, the value of S20 is 104.0, the sum of 64, 32, and 8, (bits, 6, 5, and 3).
This message is likely to show an error in the system configuration. It should be reviewed. The issue raised may be in unused logic or graphics, or have other realities that make it a non-issue.
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