Diff
：
QD711
Death
：
QD712
5CH
ID705
ID713
Y705
QD705
6CH
ID706
ID714
Y706
QD706
7CH
ID707
ID715
Y707
QD707
Description
：
Start signal
（
Y
）：
when Y is 0, close PID control, when be 1 , start PID control
Parameter
P：
Proportion parameter, mainly reflex system’s difference, carry on control as soon as
difference occurs to improve the system’s no difference degree.
Parameter
I：
Integral parameter. Mainly used to remove whisht, improve the system’s no difference
degree.
Parameter
D：
Differential parameter, mainly used to control signal’s changing trend,minish system’s
shake.
Control bound
Diff：
In the assigned bound, carry on PID control. Beyond the bound, no PID control.
Dead area Death
：
When the current PID control value compares with the preceding PID control value. If
the difference between them is less than the set dead bound’s value, the module will
abnegate the current PID control value, send the preceding PID control value to the
PLC main unit.
Each parameter’s reference value
：
Kp=20~100
；
Ki=5~20
；
Kd=200~700
；
DIFF=100~200
3
．
Setting of working mode
1
）
Expansion’s
0CH~3CH channels have two modes to select: current 0~20mA
、
4~20mA , 4CH~7CH
channels have two modes to select, voltage 0~5V
、
0~10V. Set via special FLASH data register FC inside
PLC. See the following table:
Module
Channel’s ID
0CH~3CH
4CH~7CH
1# module
FD8250
FD8251
2# module
FD8258
FD8259
3# module
FD8266
FD8267
4# module
FD8274
FD8275
5# module
FD8282
FD8283
6# module
FD8290
FD8291
7# module
FD8298
FD8299
Note
：
As showed in the preceding table, each register set 4 channels’ mode, each register has 16 bits. From
low bit to high bit, every 4 bits separately set 4 channels’ mode.
Each bit’s definition is showed in the following table:
The following, we take module 1 as example to describe the setting format:
Register FD8250
：
Take 1# module as example:
FD8250 H O O O O
0CH
1CH
2CH
3CH
FD8251 H O O O O
4CH
5CH
6CH
7CH
