Toshiba PROSEC T3H - Manual (Page 56)

54
PROSEC T3H
2. Expanded Functions
B+17
⋅
B+16 Initial status STS
B+17 B+16
F 0 F C 8 4 0
Initial operation mode
00 : Manual mode
01 : Auto mode
10 : Cascade mode
11 : (Reserve)
Direct / reverse selection
0 : Direct
1 : Reverse
B+19
⋅
B+18 MV upper limit MH (-25 to 125 %) Data range: -25.0 to 125.0
B+21
⋅
B+20 MV lower limit ML (-25 to 125 %) Data range: -25.0 to 125.0
B+23
⋅
B+22 MV differential limit DMV (0 to 100 %/
∆
t) Data range: 0.0 to 100.0
B+25
⋅
B+24 Control interval setting n (1 to 32767 times) Data range: 1.0 to 32767.0
Executes PID every n scan. Therefore, control interval
∆
t = n
×
constant scan interval
(It is treated as n = 1 when n
≤
0)
C+1
⋅
C Manipulation value MV (-25 to 125 %) Data range: -25.0 to 125.0
C+3
⋅
C+2
:
Internal work area
C+15
⋅
C+14
Operation
1. When the instruction input is OFF:
Initializes the FPID3 instruction.
Operation mode is set as specified by B+17
⋅
B+16. A+10 bit 0, 1
←
B+16 bit 0, 1
Auto mode SV is set as specified by B+9
⋅
B+8. ASV
←
ISV
Manual mode MV is set as current MV. MMV
←
MV
Internal calculation data is initialized.
MV remains unchanged.
2. When the instruction input is ON:
Executes PID calculation every n scan which is specified by B+25
⋅
B+24. The following operation modes
are available according to the setting of A+11
⋅
A+10.
•
Auto mode
This is a normal PID control mode with ASV as set value.
Set value differential limit DSV, manipulation value upper/lower limit MH/ML and differential limit DMV
are effective.
Bump-less changing from auto mode to manual mode is available. (Manual mode manipulation value
MMV is over-written by current MV automatically. MMV
←
MV)