Process Alarm - Toshiba V Series User Manual

Chapter 3 Software Functions
3.4.4

Process alarm

When tags are registered, process alarm generation/recovery processing will be executed.
The processing items are shown below.
3
46
Table 3-7 Process Alarm Table
Tag instrument variables Process alarm contents
Indicator variable (PV) DPL (PV rate-of-change) alarm
PL (PV low limit) alarm
PH (PV high limit) alarm
PRE (PV process error) alarm
PVI (Sensor error) alarm
PDE (Device error) alarm
Controller variables (LP) VPI (Valve position error) alarm
DVE (Deviation) alarm
MVL (MV high limit) alarm
MVH (MV low limit) alarm
MVE (MV error) alarm
Pushbutton (PB) IOE (DI/DO module error) alarm
Note 1: Generation/recovery of CLI (control inactive) of the controller must be
executed by the user's program.
Note 2: When alarm suppression is executed by program, alarms other than the
following items will be reset.
Indicator: PDE alarm
Controller: MVE alarm
CLI alarm (suppression processing must be executed by the
user's program)
Pushbutton: IOE alarm
Model 1000 Loop Controller L1 LC511, 512 User's Manual