Toshiba PROSEC T3H user manual +1 ⋅C

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)

54 PROSEC T3H