Honeywell UMC800 Reference Manual page 225

2.74 TPSC (3POS) Function Block,
Outputs
WSP = Working Setpoint in Engineering Units for monitoring
AL1 = Alarm 1 - Digital Signal
AL2 = Alarm 2 - Digital Signal
ATI = Autotune Indicator (ON = Autotune in Progress)
MODE = Loop mode status (typically connected to the Mode Flags block for encoding). Value indicates
modes as follows:
0.0 RSP AUTO
1.0 RSP MAN
2.0 RSP Initialization Manual (See Note 1)
3.0 RSP Local Override (See Note 1)
4.0 LSP AUTO
5.0 LSP MAN
6.0 LSP Initialization Manual (See Note 1)
7.0 LSP Local Override (See Note 1)
BCO - Back Calculation Output (for blocks used as Cascade Secondary). This block can only be used as a
cascade secondary; therefore, no BCI input is provided.
NOTE 1.
When a request to change from Auto to manual is received and:
- the request comes from the operator Interface, the request is ignored.
- the request comes from the Mode Switch (MDSW) function block, the request is retained and when leaving the
Initialization Mode or Local Override Mode the loop will go to manual.
Block Properties
Double click on the function block to access the function block properties dialog box.
Dialog Box Structure
The TPCS properties dialog box is divided into six tab cards
GENERAL
RSP
RANGE/LIMIT
TUNING
ACCUTUNE
ALARMS
MOTOR
Click on the tab to access the properties for that tab.
3/99
continued
Function Block Reference Guide
Function Blocks
Continued next page
215