Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) PID and Ramp/Soak Functions - Manual (Page 29)

Continuous Control Functions
PID CONTROL BLOCK
2-23
53 Output Modes Limited (OPML)........................................................................................ C – R
The output modes limited count value is used to limit the output modes to those selected.
A 2 Output modes are limited to AUTO.
M.A 3 also A.M. Output modes are limited to MANUAL and AUTO.
A.T 6 also T.A. Output modes are limited to AUTO and TRACK.
M.A.T 7 Also T.A.M, T.M.A, A.T.M, A.M.T, M.T.A. Output modes are limited
to MANUAL, AUTO and TRACK.
54 Track Status (TS) ...............................................................................................................CWR
If the track input signal is asserted, the mode is set to TRACK, and the track value is copied to
the output. Track status can only be written if the block state is OFF or DEBUG or the output
or controller mode is FAULT. Track status is set TRUE when the output mode is not AUTO,
or the setpoint mode is LOCAL.
FALSE 0 Mode is not track.
TRUE 1 Mode is TRACK. This occurs when the PID algorithm is not writing
the output.
55 Track Status Quality (TSQ) .............................................................................................. – WR
Track status quality is determined by the block state and the track command input.
GOOD 0 Quality when the block is RUN or HOLD or the track command input
is good.
BAD 1 Quality when the block is OFF or the track command input is bad.
56 Feedforward Calculation Type (FFCTYPE) .................................................................... C – R
If the feedforward calculation type is not NONE, then the feedforward compensation input
(FFCI) must be configured. This is useful for connecting a disturbance variable typically found
in 3-element drum level control as an adder to the PID auto output.
NONE 0 No feedforward calculation is performed.
ADD 1 The feedforward compensation input is added to the PID auto output.
MULT 2 The feedforward compensation input is multiplied against the PID
auto output.
57 Control Action (ACTION) ..................................................................................................CWR
Control action determines whether the controller algorithm action is direct or reverse acting.
REVERSE
0 Output of controller will decrease as process rises above setpoint.
DIRECT 1 Output of controller will increase as process rises above setpoint.
58 Calculation Error Action (CERRACT) ..............................................................................CWR
The calculation error action determines if the auto output value is passed or held and if it is
marked good or bad when a calculation error occurs.
PASS,GOOD 0 Pass Value, Mark Good.
PASS,BAD 1 Pass Value, Mark Bad.
HOLD,GOOD 2 Hold Value, Mark Good.
HOLD,BAD 3 Hold Value, Mark Bad.