Toshiba V Series User Manual page 223

Conventional single-loop controllers (TOSDIC 212D/215D)
Classification Abbrev
Dynamic characteristic DLM Rate-of-change limit U2 ≠ 0
compensation
Dynamic characteristic LAG Phase lead/lag
compensation
Dynamic characteristic DIF Differential
compensation
Dynamic characteristic DT Dead time
compensation
Dynamic characteristic MAV Moving average
compensation
Dynamic characteristic SAV Sampling average
compensation
Dynamic characteristic HLD Hold
compensation
Control operation PID PID operation
Control operation PI2 Deviation squared
PID
Control operation PIS Sample PI
Control operation P Proportional control
Control operation RB Ratio calculation
Control operation FPI 2-degree-of-freedom
PID
Compare : Equivalent instruction is provided;
Name Specification
|U1 − Y | ≤ H1 Y=U1
− 1
U1 − Y > H1 Y = Y − 1+H1
− 1
Y − U1 > H1 Y=Y
− 1
U2=0 or INZ=0 Y=U1
Compensation calculation using the specified lead
time and lag time is performed.
Differential calculation is performed using the
specified differential time.
U1 is initialized when output H1=1 delayed by
(H2*H3+CTS). Sampling cycle: 1.0 to 2000.0CT.
Average value of n pieces of the past and the
present samples is initialized when output H1=1.
Sampling cycle: 1.0 to 2000.0CT.
Sampling average value of n pieces of the past and
the present samples is output.
if U2=0 then Y= − 1, else Y=U1
PID operation is executed in the loop specified by
H3.
PID operation is executed for deviation squared
value in the loop specified by H3.
Sample PI operation is executed in the loop
specified by H3.
Proportional control operation is executed in the
loop specified by H3.
Ratio calculation is executed in the loop specified
by H3.
2-degree-of-freedom PID operation is executed in
the loop specified by H3.
: Specification partly differs;
Comparison
DLM_REAL
− H1
− 1
LAG2
DIF2
Initialized when DTE=0. Sampling cycle: 0.1 to 3276.7
seconds
Initialized when MAVE=0. Sampling cycle: 0.1 to 3276.7
seconds
Substitute application (SAV)
Substitute application (HLD)
The following instructions are used for PID related
operations.
Standard: PID2,MVD,MVF,PID_P,PIDP_P,DCL_P
User FB: PID,PIDP,SPI,SPIP,DCL,FFD
New instrumentation FB: msPID, msPIDFF, msMA,
msRS, msDCL and other
:Equivalent instruction is not provided
LC512/,511
Equivalent instructions and precautions