Toshiba PROSEC T3H - Manual (Page 51)

User’s Manual
49
2. Expanded Functions
B+8 Initial status STS
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+9 MV upper limit MH (-25.00 to 125.00 %) Data range: -2500 to 12500
B+10 MV lower limit ML (-25.00 to 125.00 %) Data range: -2500 to 12500
B+11 MV differential limit DMV (0.00 to 100.00 %/
∆
t) Data range: 0 to 10000
B+12 Control interval setting n (1 to 32767 times) Data range: 1 to 32767
Executes PID every n scan. Therefore, control interval
∆
t = n
×
constant scan interval
(It is treated as n = 1 when n
≤
0)
C Manipulation value MV (-25.00 to 125.00 %) Data range: -2500 to 12500
C+1
:
Internal work area
C+9
Operation
1. When the instruction input is OFF:
Initializes the PID3 instruction.
Operation mode is set as specified by B+8. A+5 bit 0, 1
←
B+8 bit 0, 1
Auto mode SV is set as specified by B+4. 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+12. The following operation modes are
available according to the setting of A+5.
•
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)