The Unused-Alarm tags.txt file lists tags that are not on any graphic but should alarm. DBDOC puts unused tags into this category when they are not on any graphic and the following conditions hold:

• for any tag - where the alarm group value is not zero
• for digitals - the source DO/L block does not have S2=2, which suppresses alarming on a change
• for analogs - the source AO/L block seems to have valid low and / or high limits, where valid means that, given the block range defined by its zero and span values, at least one of the limits is within span units of that range

Here are some analog examples:

• zero = 0.0, span = 100.0, if either limit is between -100.0 and +200.0, we call it an alarm tag
• zero = -50.0 span = 100.0, if either limit is between -150.0 and +150.0, we call it an alarm tag
• zero = 0.0 span = 100.0, if both limits are above +200.0, we will not call it an alarm tag, even though the working range might be +300.0 to +400.0 and the limits set appropriately.

TAGNAME                          LOOP PCU MODULE BLOCK   TAGTYPE              SOURCE
140SCREWLEVELA                      1   1     30   2338  Analog               1013035
140SCREWLEVELB                      1   2     30   2339  Analog               1023035
140SCREWLEVELC                      1   4      8   2394  Analog               1040836
1ABUNDCESTART                       1   5      6   2300  RMCB                 1050635
1BBOTDCESTART                       1   5      6   2400  RMCB                 1050637
1BBUNDCESTART                       1   5      6   2350  RMCB                 1050636
1BCONVEYSEQSW                       1   5      6   2290  RCM                  1050634
1BCONVEYSTART                       1   5      6   2250  RMCB                 1050634
1BESTAHIGHAMP                       1   1      2   8165  Digital              10102B3

This file can be built into Hyperview by making a copy of the file, then adding Text files in Wizard, pointing at the project folder. For more information, see the Module:List of Unused Alarm Tags article in Hyperview Help.

See also

• Unused Tag Lists