Honeywell HC900 Reference Manual page 424

Function Blocks
TPSC (3POS) Function Block
Outputs
WSP = Working Setpoint in Engineering Units for monitoring
AL1 = Alarm 1 - Digital Signal
AL2 = Alarm 2 - Digital Signal
DIRECT = ON = Direct; OFF = Reverse
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
1.0
2.0
3.0
4.0
5.0
6.0
7.0
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.
FAIL = Failed Output Indicator - Module Error
ATTENTION
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 8 tab cards
GENERAL
START/RESTART
RSP
RANGE/LIMIT
TUNING
ACCUTUNE
ALARMS
MOTOR
Click on the tab to access the properties for that tab.
410
RSP AUTO
RSP MAN
RSP Initialization Manual (See ATTENTION)
RSP Local Override (See ATTENTION)
LSP AUTO
LSP MAN
LSP Initialization Manual (See ATTENTION)
LSP Local Override (See ATTENTION)
HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07