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Technical Reference Manual - InduSoft

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Tags and the Project Database<br />

Tag Property Description R or R/<br />

W<br />

Data Type<br />

Available on Data Type…<br />

Bool Int Real Str<br />

Retain<br />

DevMLimit Limit value for the Deviation- alarm. R/W Real N Y Y N Y<br />

HiHi<br />

Hi<br />

Lo<br />

LoLo<br />

Rate<br />

DevP<br />

DevM<br />

AlrStatus<br />

Ack<br />

UnAck<br />

If 0, the HiHi alarm is not active. If 1, the HiHi<br />

alarm is active.<br />

If 0, the Hi alarm is not active. If 1, the Hi alarm<br />

is active.<br />

If 0, the Lo alarm is not active. If 1, the Lo<br />

alarm is active.<br />

If 0, the LoLo alarm is not active. If 1, the LoLo<br />

alarm is active.<br />

If 0, the Rate alarm is not active. If 1, the Rate<br />

alarm is active.<br />

If 0, the Deviation+ alarm is not active. If 1, the<br />

DevP alarm is active.<br />

If 0, the Deviation- alarm is not active. If 1, the<br />

DevM alarm is active.<br />

Integer value with the status of the current<br />

active alarms associated to the tag. Each bit of<br />

this integer value indicates a specific status:<br />

• Bit 0 (LSB): HiHi Alarm active<br />

• Bit 1: Hi Alarm active<br />

• Bit 2: Lo Alarm active<br />

• Bit 3: LoLo Alarm active<br />

• Bit 4: Rate Alarm active<br />

• Bit 5: Deviation+ Alarm active<br />

• Bit 6: Deviation- Alarm active<br />

Examples: If Tag‐>AlrStatus returns the value<br />

2, it means that "Hi" alarm is active. If it returns<br />

the value 3, it means that the "HiHi" and the<br />

"Hi" alarm are active simultaneously.<br />

If this property returns the value 0, it means<br />

that there are no active alarms associated to<br />

this tag.<br />

For Boolean tags, only the values 1 (bit 1), 4<br />

(bit 2) or 16 (bit 4) can be returned.<br />

This property can have two values:<br />

• 0: There are no alarms associated with<br />

this tag that require acknowledgment.<br />

• 1: There is at least one alarm<br />

associated with this tag that requires<br />

acknowledgment.<br />

This works as a global acknowledge for the tag<br />

and goes to 0 only when all alarms for the tag<br />

have been acknowledged.<br />

This property can have two values:<br />

• 0: There is at least one alarm<br />

associated with this tag that requires<br />

acknowledgment.<br />

• 1: There are no alarms associated with<br />

this tag that require acknowledgment.<br />

R Boolean Y Y Y N n/a<br />

R Boolean Y Y Y N n/a<br />

R Boolean Y Y Y N n/a<br />

R Boolean Y Y Y N n/a<br />

R Boolean Y Y Y N n/a<br />

R Boolean N Y Y N n/a<br />

R Boolean N Y Y N n/a<br />

R Integer Y Y Y N N<br />

R Boolean Y Y Y N N<br />

R/W Boolean Y Y Y N N<br />

<strong>InduSoft</strong> Web Studio Page 129

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